Showing posts with label Lasker. Show all posts
Showing posts with label Lasker. Show all posts

Saturday, 2 March 2024

Classic Treat

ONE of the joys of looking at old games is they tend to be easier to understand.
Ideas now accepted as commonplace by club players were still to be worked out when many of the classic giants of chess were at the board.
Often these ideas are seen in simpler form than they now have, after many more decades of praxis.
Such games can be especially entertaining when featuring two world champions, in the following case Wilhelm Steinitz and his successor Emanuel Lasker.
Notes in italics are by Savielly Tartakower and Julius du Mont, algebraicised from 500 Master Games Of Chess.
Notes in bold italics are my translation from German of those by grandmaster Rainer Knaak in ChessBase's 2024 Mega database.

Steinitz - Lasker
London 1899
Vienna Gambit
A striking feature of the following fine game is Black's "double-sacrifice," followed by a quiet move, the logical result of ultra-rapid and concentric development.
London 1899 is remembered as one of the great tournaments, because almost all of the world's best were there (only Tarrasch was missing).
1.e4 e5 2.Nc3 Nc6 3.f4 d5 4.d3!?
Adopting his favourite continuation - tricky, but slow.
Today only 4.fxe5 is played.
The earliest game in Mega24 to reach the position after 3...d5 saw Carl von Jaenisch unsuccessfully, in 1851, play 4.exd5 against Howard Staunton, and 4.exd5 is a favourite of Hikaru Nakamura (Rainer's annotations appear to have been written in 2000).
How should Black respond?
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4...Nc6
The safest way to equalise is 4...exf4.
Three years earlier Lasker and Harry Pillsbury played 4...d4 in a consultation win against Steinitz and Mikhail Chigorin. But in 1909, when Lasker next reached the position, with black against Rudolf Spielmann, he preferred 4...exf4, albeit only drawing. For what it is worth, Stockfish16 and Komodo14.1 reckon the text is inferior to the other two moves.
5.fxe5 Nxe5 6.d4 Ng6
Remaining on the critical wing.
7.exd5
Only with 7.e5 can White hope for an advantage.
7...Nxd5 8.Nxd5
White hopes the black queen will not be so good on d5.
8...Qxd5
The black queen occupies a powerful square, whence it cannot very well be driven away (9.c4 would weaken White's position).
9.Nf3 Bg4 10.Be2 0-0-0 11.c3
This may lose time. White should castle.
11...Bd6
Already Black's forces have obtained a development.
12.0-0 Rhe8
Premature would be 12...Qh5 13.h3 Bxh3 13.Ng5 etc. The text move contains no direct threats, but it can eventually be followed by 13...f6 and 14...Nh5 etc.
How would you assess the coming middlegame?
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White has the only pawn on the two centre files, but Black has a large lead in development and the safer-looking king. The engines give Black at least a slight edge.
13.h3
Less impulsive would be 13.Bd2.
The engines prefer Steinitz's choice.
13...Bd7 14.Ng5?!
Here again 14.Bd2 is indicated.
Steinitz dreams of driving away the queen on d5 with Bf3, but this should happen with 14.c4, although it is difficult to judge whether White can then defend all his weaknesses.
14...Nh4
Naturally not 14...f6 15.Bf3 Qg8 16.Ne4 with good play for White.
The engines reckon Black would still have a slight edge after 16...Bf8!?
15.Nf3
The lesser evil is 15.Bf3.
It looks like White's knight manoeuvre was completely pointless. But if Black were to play 15...Nf5, 16.Ng5 would come and White would be ready to play Bf3 again. Giving up the bishop-pair with 15.Bf3 may not have been in White's interest, but nevertheless was necessary.
The engines are not so sure, reckoning that after 15.Bf3 Nxf3+ 16.Qxf3 Qxf3 17.Nxf3 Black gets a positionally won game with 17...Bb5 18.Re1 Rxe1+ 19.Nxe1 Re8.
What should Black play?
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15...Nxg2!
A "break-up sacrifice," of which the chief beauty lies in the fact that it requires a complementary sacrifice on the next move.
White has some defensive resources at hand, but the sacrifice still works.
16.Kxg2 Bxh3+
Taking the last defence by storm.
Even stronger, according to the engines, is 16...Re6, building up Black's attacking strength eg 17.Bd3 Rf6 18.Bg5!? Rxf3! 19.Rxf3 Qxg5+ 20.Kf1 Bg3 etc.
17.Kf2
Accepting the second sacrifice loses by force: 17.Kxh3 Qf5+ 18.Kg2 Qg4+ 19.Kh1 Qh3+ 20.Kg1 Qg3+ 21.Kh1 Re4 22.Bg5 Rg4 23.Rf2 Qxf2 24.Qf1 Qg3 etc.
17...f6!?
Whereas after 17...Bxf1 18.Bxf1 etc White could still offer a stubborn resistance. The text move brings into play Black's additional trump: an assault by pawns.
18.Rg1?
Better is 18.Rh1.
18...g5
Steinitz now defends against the difficult-to-stop advance of the g pawn by returning the piece.
19.Bxg5!?
The engines prefer 19.Bd2, but reckon Black is still winning.
19...fxg5 20.Rxg5
Numerically the games are even, but dynamically Black's forces, including the "two bishops," are overwhelming.
In addition to the miserable king's position, White has another handicap: the queen's rook is not developed.
20...Qe6 21.Qd3 Bf4 22.Rh1!?
If the threatened rook moves, Be3+ follows and the queen's rook is cut off.
22...Bxg5 23.Nxg5 Qf6+ 24.Bf3
Or 24.Nf3 Bg4, eg 25.Rg1 h5 26.Rg3 Rf8 27.Kg2 Rde8 28.Bd1 Qf4, threatening both ...h4 and ...Re3.
24...Bf5 25.Nxh7!? Qg6 26.Qb5 c6 27.Qa5 Re7 28.Rh5
There is nothing better, eg 28.Qxa7 Rxh7 29.Qa8+ Kc7 30.Qa5+ Kd7 etc.
28...Bg4 29.Rg5 Qc2+ 30.Kg3 Bxf3 0-1
Lasker won the first brilliancy prize for this game.

Wednesday, 23 September 2020

Chess Evolution: The French Defence (part seven)

THE McCutcheon fell under a cloud after its rough treatment from Lasker in his 1908 world championship match against Tarrasch.
It was still played, especially at club level, but attention focused on what was already the main line of the French Classical: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7.
Lasker helped in this process by turning up on the black side of the line, continuing to play it well into the later stages of his career.
Ossip Bernstein - Emanuel Lasker
Zürich 1934
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qg4!?
The move 7.Qd2 was popular in the early days of this line but today 7.f4 is established as the main try.
7...0-0 8.Nf3 c5 9.Bd3 f5!?
The most-popular move in ChessBase's 2020 Mega database, but strong players in modern times have been more likely to play 9..h6 or 9...cxd4, moves preferred by the analysis engines Stockfish11 and Komodo11.01.
10.exf6
The engines like 10.Qg5!?
10...Rxf6!?
Hans Johner had played 10...Nxf6 two rounds earlier, losing to Walter Henneberger.
11.Qh4 Nf8 12.dxc5 Qxc5 13.0-0 Nc6 14.Rae1 Bd7 15.Ne5!?
Bernstein seeks to blockade the black central pawn-duo, as taught by Nimzowitsch, but the blockade cannot be maintained. The engines suggest White should be content for now to keep the pawns under restraint, for example with 15.Qg5.
15...Nxe5 16.Rxe5 Qb6
16...Ng6 17.Bxg6 Rxg6 also looks reasonable for Black.
17.Re3 Be8!?
A well-known manoeuvre in the French - the light-square bishop seeks activity from h5 or, in this case, g6.
Bad is 17...Qxb2? 18.Rb1 Qa3 19.Nxd5!
18.Rg3 Bg6 19.Qg4 Rd8
Could Lasker here have grabbed the b2 pawn?
Position after 19.Qg4

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Yes, according to the engines, who give 19...Qxb2!? 20.Rb1 Qxc3 21.Bxg6 Qc7, reckoning White does not have sufficient compensation for the pawn.
20.b3 Rd7 21.Na4!?
Hitting the black queen, but driving it to a better square.
21...Qd6 22.Rf3 Bxd3
Starting the central pawns rolling with 22...e5!? looks promising.
23.cxd3!?
This creates a weakness, but seeks to hold up the black central pawns.
23...Rh6 24.Qg3 e5 25.Re3 b5 26.Nc3 Ng6?
If 26...d4, White replies 27.Ne4. However that is better than the text, which lets White seize the initiative.
27.d4 exd4?
The engines give 27...Qe7, but much prefer White.
28.Nxb5 Qc5 29.Qb8+?
The wrong check. After 29.Re8+ Kf7 29.Rfe1!, grabbing the knight with 29...Qxb5? loses to 30.Qf3+. The engines reckon Black's best is 29...Nf8, but then White can play 30.Nxd4 as 30...Qxd4 loses to 31.Rxf8+ Kxf8 32.Qb8+ Kf7 33.Qe8+ Kf6 34.Qe6+ Kg5 35.Re5+ etc.
29...Nf8 30.Rf3?
Bernstein had to find 30.b4! Qxb4 31.Rb3 with roughly equal chances.
30...Rb6 31.Qe8 Rf6 32.Rxf6 gxf6 33.Qe2 a6
The white knight is trapped.
34.Nxd4 Qxd4 35.Qxa6
White has two connected passed pawns for the knight, but they are a long way from queening. It is not simple for Black, however, as his king is exposed.
35...Qe5 36.Qd3 Ne6 37.g3
Objectively best, according to the engines, is 37.Qg3?!, but exchanging queens in a position such as this is tantamount to giving up.
37...d4 38.Rc1 Qd5 39.h4 Kg7 40.Re1 Nc5 41.Qd1 d3 42.b4 Ne4 43.Qf3 Nc3 44.Qg4+ Kf7 0-1
Lasker's technique in keeping his pieces (apart from the king) centralised while gradually advancing the d pawn has left Bernstein without counterplay.

Tuesday, 22 September 2020

Chess Evolution: The French Defence (part six)

WORLD champions have a strong influence on opening trends, so Lasker's use of 4.Bg5 against the Classical: 1.e4 e6 2.d4 d5 3.Nc3 Nf6 made a big impression on contemporaries.
He played the move three times in his 1908 world championship match against Tarrasch, scoring two wins and a draw.
Here is their third encounter:
Emanuel Lasker - Siegbert Tarrasch
World Championship 1908 Game 11
French McCutcheon
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5
Lasker in his career also played 4.e5, 4.Bd3 and (once) 4.exd5, but the text was overwhelmingly his most-common response to the Classical.
4...Bb4
Tarrasch replied with the McCutcheon in all three games.
5.exd5
Lasker played the somewhat obscure 5.Bd3 in games seven and nine, winning the first but being held to a draw in the second. The main move - then and today - is 5.e5.
5...Qxd5
This active queen recapture is very much in Tarrasch's style of liking piece-play, eg after 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 in the Steinitz Variation of the French Classical he advocated 5.Nf3 rather than shoring up the centre with 5.f4.
6.Nf3!?
Lasker three times played 6.Bxf6 in his 1907 world championship massacre of Marshall, but 'only' scored a win and two draws (the match finished in Lasker's favour +8=7-0).
6...c5 7.Bxf6 gxf6 8.Qd2
White has given up the bishop-pair but weakened Black's kingside.
8...Bxc3
8...Qd6 was tried in Leonid Totsky (2550) - Sergey Koutsin (2415), Rýmařov (Czechia) 1999, but after 9.a3 Black felt obliged to return the bishop-pair anyway with 9...Bxc3. The further moves 10.Qxc3 Nd7 11.0-0-0 gave White a strong attacking position, according to the analysis engines Stockfish11 and Komodo11.01 (1-0, 26 moves).
9.Qxc3 Nd7?!
The engines much prefer 9...Qe4+, as played by Vidmar in a draw against Leonhardt at the 1906 German chess championship in Nürnberg.
10.Rd1
The engines reckon even stronger is the messy-looking 10.0-0-0!? Qxa2 11.dxc5!? Qa1+ 12.Kd2.
10...Rg8 11.dxc5 Qxc5 12.Qd2
Lasker believes his king will be safer than Black's, and anyway 12.Qxc5?! Nxc5 frees the black position.
12...Qb6 13.c3 a6 14.Qc2 f5!?
Indirectly protecting h7 and creating a possible central outpost square at e4, but weakening the kingside dark squares.
15.g3 Nc5 16.Bg2 Qc7
Planning to fianchetto his remaining bishop.
17.Qe2 b5 18.0-0 Bb7
How should White proceed?
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19.c4!
The white king looks pretty safe, so Lasker seeks to open lines to get at the uncastled black king.
19...b4 20.Qd2 Rb8
Indirectly defending b4 (21.Qxb4?? loses to 21...Bxf3), but now Lasker invades on the kingside.
21.Qh6 Bxf3 22.Bxf3 Qe5
Indirectly defending h7 (23.Qxh7?? loses to 23...Rh8) and attacking b2, but the key to this position is White's better piece-coordination and Black's unsafe king.
23.Rfe1 Qxb2 24.Qf4 Rc8 25.Qd6 f6
This does not help, but there is no way to save Black's position.
26.Bh5+ Rg6 27.Bxg6+ hxg6 28.Rxe6+ 1-0

Wednesday, 9 September 2020

Champion Of Champions (part 12)

HERE is the tournament bracket after three quarter-finals.

Round of 16               Quarter-Finals          Semi-Finals
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian

6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik
13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)

3. Capablanca
v----------------------------Kramnik (+118)
14. Kramnik (+12)
                                     v................................Kramnik
5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)

7. Smyslov (+18)
v----------------------------Smyslov
10. Spassky
                                     v................................
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

Quarter-Finals
Match Four: Smyslov v Lasker
Game One
Vasily Smyslov - Emanuel Lasker
Spanish Berlin
1.e4
As noted before, 1.e4 was played in 454 of the games in ChessBase's 2020 Mega database in which Smyslov had white, compared with 425 games for 1.d4.
1...e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0-0 Nxe4 5.Re1
Very modern!
5...Nd6 6.Nxe5 Be7
Smyslov did not face 5...Be7, so this is as far as we can get
The analysis engines Stockfish11 and Komodo11.01 give White an averaged advantage of +34.5.

Game Two
Emanual Lasker - Vasily Smyslov
Spanish Closed
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4
Lasker played the text almost three times as frequently as the move often associated with him, 3.Bxc6.
4...Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d6 9.d4!?
Lasker played this four times, compared with two for 9.h3.
9...Bg4 10.Be3 exd4 11.cxd4 Na5 12.Bc2 c5
Smyslov played the text and 12...Nc4 twice each, scoring a win and a loss with the latter but a win and a draw with 12...c5, which is therefore chosen on tiebreak.
As far as we can go - Lasker did not face 12...c5
The engines give Lasker an averaged advantage of +23 - not enough to overcome Smyslov's score from game one.
Here is the updated tournament bracket.

Round of 16               Quarter-Finals          Semi-Finals
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian

6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik
13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)

3. Capablanca
v----------------------------Kramnik (+118)
14. Kramnik (+12)
                                     v................................Kramnik
5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)

7. Smyslov (+18)
v----------------------------Smyslov (+11.5)
10. Spassky
                                     v................................Smyslov
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

So the semi-finals can be thought of as an all-Soviet affair, although Kramnik might argue with that description.

Saturday, 5 September 2020

Champion Of Champions (part eight)

HERE is the tournament bracket after seven matches.

Round of 16               Quarter-Finals
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)

8.Tal (+8.5)
v----------------------------Tal
9.Petrosian

6. Botvinnik (+66)
v----------------------------Botvinnik
11. Fischer

13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)

3. Capablanca
v----------------------------Kramnik
14. Kramnik (+12)

5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)

7. Smyslov (+18)
v----------------------------Smyslov
10. Spassky

15. Anand
v----------------------------
2. Lasker

Round of 16
Match Eight: Anand v Lasker
Game One
Vishy Anand - Emanuel Lasker
Spanish Berlin
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6
This should be interesting. Lasker was something of a loner among top players of his time in playing the Berlin, while today Anand is regarded as one of the experts at playing against it.
4.0-0 Nxe4 5.d4 Be7
Lasker preferred this to the 5...Nd6 of the Berlin Wall.
6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7 9.Nc3
Anand has reached the position after 8...Nb7 twice in ChessBase's 2020 Mega database, once playing the text and once playing 9.Re1. Since he drew with the latter but won with 9.Nc3, it is 9.Nc3 that is chosen on tiebreak.
9...0-0 10.Re1 Nc5 11.Nd4
Anand has played the text once, winning, and 11.Be3 once, drawing.
11...Ne6 12.Nxe6
Lasker never faced 12.Nxe6
I thought Anand-Lasker would be an intriguing match, but I did not expect a 'game' to get this deep.
Stockfish11 and Komodo11.01 give Anand an averaged advantage of just +4.5.
On the face of it that makes Lasker favourite to progress to the quarter-finals.

Game Two
Emanuel Lasker - Vishy Anand
Spanish Marshall Attack
1.e4 e5
This is preferred to 1...c5 by Anand in Mega20 by 347 games to 310.
2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7
Anand has preferred this to 5...Nxe4 by 40 games to 33.
6.Re1 b5 7.Bb3 0-0 8.c3 d5
This should be fun.
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6
Again we have got quite some way into a game, but Lasker did not face 11...c6
The engines' averaged evaluations give Lasker an advantage of +55, making him an easy match winner.
Here is the updated bracket at the end of the round of 16.

Round of 16               Quarter-Finals
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)

8.Tal (+8.5)
v----------------------------Tal
9.Petrosian

6. Botvinnik (+66)
v----------------------------Botvinnik
11. Fischer

13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)

3. Capablanca
v----------------------------Kramnik
14. Kramnik (+12)

5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)

7. Smyslov (+18)
v----------------------------Smyslov
10. Spassky

15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

Some statistics:
*Five of the eight round-of-16 matches were won by the earlier world champion;
*The average winning margin was +36.3;
*Carlsen had the biggest winning margin (102.5), Tal the smallest (8.5);
*Lasker and Carlsen are the only champions in the quarterfinals who are neither Russian or Soviet.

Wednesday, 8 July 2020

Champion Repertoire (part two)

EMANUEL Lasker was world champion from 1894, when he dethroned William Steinitz (Steinitz changed his first name from Wilhelm as part of becoming a US citizen), until 1921, when he lost to José Capablanca (technically Lasker resigned his title in favour of the Cuban the previous year, but few people pay much attention to that).
A Lasker repertoire is more suitable than Steinitz's, in my opinion, for club players who want a less-tactical, arguably more positional, way of playing.
White
Open 1.e4 with the aim of playing a mainline Spanish: 1...e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 (Lasker is famous for playing the Exchange Variation: 4.Bxc6 but he played other moves, including 4.Bc4!? once, three times as often.) After the standard moves 4...Nf6 5.0-0 Be7 6.Re1 b5 (he generally met 6...d6, another popular continuation in his day, with 7.c3) 7.Bb3 d6 8.c3 0-0 he liked immediate central play with 9.d4. Lasker's opponents often played 8...Na5 9.Bc2 c5 whereupon Lasker again preferred immediate central play with 10.d4.
Against the Open Variation: 5...Nxe4 Lasker had most success, scoring 60% (all percentages are taken from ChessBase's 2020 Mega database), with 6.d4 b5 7.Bb3 d5 8.a4!? while scoring just 33% with the mainline 8.dxe5. The main reply to 8.a4!? today is 8...Rb8, which Lasker met with 9.axb5 axb5 10.dxe5 Be6 11.c3, reaching a position similar to main lines in the Open Variation but with White having control of the a file.
Against 3...Nf6 Lasker overwhelmingly chose 4.0-0, meeting 4...d6 and 4...Nxe4 with 5.d4, but against 4...Be7 he went 5.Nc3 d6 6.d4.
The other popular Spanish line in Lasker's day was the Steinitz Defence: 3...d6, which Lasker met with 4.d4 Bd7 5.Nc3.
Against the Petrov: 2...Nf6 Lasker was happy transposing to a Spanish Four Knights by 3.Nc3 Nc6 4.Bb5, the games usually continuing down the main line with 4...Bb4 5.0-0 0-0 6.d3 d6 7.Bg5.
Against the Philidor: 2...d6 he played both 3.d4 and 3.Nc3, scoring much better with the former, albeit from a small sample size.
After 1.e4 the second-most popular continuation of Lasker's opponents was the French Defence: 1...e6 2.d4 d5. Lasker usually met the Classical: 3.Nc3 Nf6 with 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5!? This is still played by grandmasters and is quite liked by some analysis engines and should come as a surprise as today 7.f4 and 7.Qd2 are more popular.
Against the McCutcheon: 4...Bb4 Lasker scored 78% with 5.exd5.
Against the Winawer: 3...Bb4 Lasker generally played 4.e5, meeting 4...c5 with both the quiet 5.Bd2 or the sharper 5.a3 Bxc3+ 6.bxc3 Qc7 7.Qg4.
Lasker overwhelmingly played 2.Nf3 and 3.d4 against the Sicilian, scoring 64% against the move he faced more than three-quarters of the time, 2...Nc6.
Against the Caro-Kann: 1...c6 he generally played 2.d4 d5 3.Nc3.
Lasker varied his lines against the Scandinavian: 1...d5 2.exd5 Qxd5 3.Nc3 Qa5/d8 to such an extent that is not really possible to give a recommendation based on his play, and this is also the case for Scandinavian lines with 2...Nf6.
Against Alekhine's Defence: 1...Nf6, the only other reply to 1.e4 he met more than twice, Lasker liked the Four Pawns Attack: 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4.
Black v 1.e4
Lasker usually played 1...e5, meeting the Spanish: 2.Nf3 Nc6 3.Bb5 with 3...Nf6. After 4.0-0 Nxe4 5.d4 he liked 5...Be7, avoiding the Berlin Wall: 5...d6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+. The main line after 5...Be7 goes 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7, at which point Lasker's opponents generally diverged. The main continuation today is 9.Nc3 0-0 10.Re1, which Lasker usually met with 10...Nc5.
Against 4.d3 Lasker played what became Kasparov's choice, 4...d6 rather than 4...Bc5.
When opponents transposed to the Spanish Four Knights with 4.Nc3, games normally followed the mainline 4...Bb4 5.0-0 0-0 6.d3 d6 7.Bg5 Bxc3 8.bxc3 at which point Lasker liked to switch his queen's knight to the kingside, starting with 8...Ne7.
Against the Italian Game: 3.Bc4 Lasker played 3...Bc5 and 3...Nf6 with equal frequency and success. Often his games would reach the same position after 3...Bc5 4.d3 Nf6 or 3...Nf6 4.d3 Bc5. They typically continued 4.Nc3 d6 5.Be3 Bb6 with Lasker often delaying castling in favour of piece manoeuvres.
Against the Scotch: 3.d4 exd4 4.Nxd4 he had most success with 4...Bc5, winning all seven games.
The King's Gambit: 2.f4 was out-of-favour at the highest levels in Lasker's day but he won both his games in Mega20 with 2...d5.
Black v 1.d4 and Others
Lasker was happy playing mainlines of the Queen's Gambit Declined: 1.d4 d5 2.c4 e6 3.Nc3 Nf6, meeting 4.Bg5 (no one played the Exchange Variation: 4.cxd5 against him) Be7 5.e3 0-0 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 with 8...dxc4 9.Bxc4 Nd5, which is still the main line today. Against 4.Nf3, games generally transposed to 4.Bg5 lines.
He met the Colle System: 2.Nf3 Nf6 3.e3 10 times, generally playing 3...e6 4.Bd3 c5, following up with 5...Nc6 whether White played 5.Bd3, 5.b3 or 5.0-0.
After 1.Nf3 d5 opponents generally played 2.d4. Lasker met the Réti continuation 2.c4 too infrequently to give a repertoire recommendation.
He most commonly met the Bird: 1.f4 with 1...d5, and the English: 1.c4 with 1...e6 or 1...e5, scoring better, from a small sample, with the latter.

One of Lasker's greatest tournament successes was winning New York 1924 one-and-a-half points clear of a field that included reigning world champion Capablanca and future world champion Alexander Alekhine.
Alekhine - Lasker
Queen's Gambit Declined
1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Nbd7!?
This is still a popular option today although 4...Be7, 4...c6 and 4...Bb4 are commoner in Mega20.
5.cxd5!?
Alekhine transposes into an Exchange Variation in which White has played Nf3 rather than reserving the option of Nge2. True Black has played ...Nbd7 but this is normal in the Exchange.
5...exd5 6.Bf4!?
This scores four percentage points better in Mega20 than the more popular 6.Bg5.
6....c6 7.e3 Nh5 8.Bd3!?
Alekhine gave this a question mark, claiming White is for choice after 8.Be5! (Alekhine's punctuation) f6 9.Bg3 but Black seems to have at least a comfortable game after winning the bishop-pair with 8...Nxe5.
8.Bg5!? has been seen at high levels in modern play.
8...Nxf4 9.exf4 Bd6 10.g3 0-0 11.0-0 Re8 12.Qc2
There is no mate after 12.Bxh7+? Kxh7 13.Qh5+.
12...Nf8
A typical deployment for the black queen's knight in the Exchange Variation. Lasker has a typical QGD Exchange position for Black but White's kingside formation is somewhat unusual.
13.Nd1?!
Alekhine strongly criticised this, suggesting 13.Rfe1, which was played in Vladimir Fedoseev (2674) - David Howell (2686), Dubai 2015. That game continued 13...Rxe1+ 14.Rxe1 Bd7 15.f5!? Qf6 16.Ne5 Re8 17.f4 with a roughly level position (½–½, 55 moves).
13...f6!?
Alekhine gave this an exclamation mark but the analysis engines Stockfish11 and Komodo11.01 much prefer 13...Bg4.
14.Ne3 Be6 15.Nh4
Many commentators suggested alternatives here, with Tarrasch's natural-looking 15.Rfe1 being perhaps the engines' choice (but their evaluations fluctuate quite a bit).
15...Bc7
Partly to line up against the isolani on d4 but also ensuring a white knight landing on f5 does not biff Black's dark-square bishop.
16.b4!?
White starts a Minority Attack, although this does not seem to fit in with playing on the kingside with Nh4.
16...Bb6 17.Nf3
How should Black proceed?
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17...Bf7!
Preparing to attack the defender of the weak-pawn d4.
18.b5?!
Continuing the Minority Attack but the engines suggest 18.h3!?, the idea being to meet 18...Bh5 with 19.Ng4.
18...Bh5 19.g4 Bf7 20.bxc6 Rc8 21.Qb2 bxc6 22.f5?
Played to prevent ...Ne6 but Black is left very weak on the dark squares, especially on the kingside. The engines prefer 22.Ng2 and if 22...Ne6 then one idea is 23.Qc2!? h6 24.Rae1 Nxd4 25.Nxd4 Bxd4 26.Rxe8+ Qxe8 27.Re1 when White has some activity for the pawn, but it is hard to believe it is enough.
22...Qd6 23.Ng2 Bc7 24.Rfe1 h5
Clearing the h7 square for the black knight to join the kingside attack.
25.h3
This further weakens the dark squares. The engines reckon a lesser evil was to give up a pawn by 25.g5!?
25...Nh7 26.Rxe8+ Rxe8 27.Re1 Rb8 28.Qc1 Ng5! 29.Ne5
As Alekhine pointed out, no improvement is 29.Nxg5 Qh2+ 30.Kf1 fxg5 31.Ne3 Qxh3+ and ...hxg4.
29...fxe5 30.Qxg5 e4 31.f6 g6 32.f4!
Moving the light-square bishop is met by ...Qh2+.
32...hxg4!
Stronger than 32...exd3 33.gxh5.
33.Be2 gxh3 34.Bh5 Rb2
Also winning is 34...hxg2 35.Bxg6 Qxf4.
35.Nh4 Qxf4 36.Qxf4 Bxf4 0-1

Friday, 24 January 2020

Lasker's Spanish Inquisition (conclusions)

IN his 10 games with 5.d4 lines in the Spanish Exchange, Lasker scored +6=3-1, which is 75%.
If you remove the three games from simultaneous exhibitions, at least two of which were against master-strength opposition, his record is even more impressive: +5=1-1, or 78.6%.
The five wins were against Tarrasch (1908 world championship), Janowski twice (second Paris match), Capablanca (St Petersburg 1914) and Marshall (New York 1924).
The only blemishes on Lasker's record in these important games were a draw against Showalter (Cambridge Springs 1904) and a loss to Steinitz (1894 world championship).
Playing 4.Bxc6 was not Lasker's only weapon against the Spanish. He chose 4.Ba4 three times as often, but scored a much lower percentage - 63% with 4.Ba4, 82% with 4.Bxc6 (he was especially deadly with the follow-up 5.Nc3), according to ChessBase's 2020 Mega database.
The following traits can be seen in Lasker's 5.d4 Spanish Exchanges:
1. The white king usually stays in the centre, ready to support the white kingside pawns (but White castles long if circumstances dictate). White should not fear losing castling rights after a major-piece exchange on d1 - the king shuffles sideways to the e file.
2. With pawns on e4 and f4, the anti-positional thrust f5 can be surprisingly effective. If Black responds with ...f6, or has played the move earlier, the square e6 can become an outpost for a white knight. The Black f pawn can also be attacked by White's g pawn.
3. Piece exchanges generally favour White, even though a less-cluttered board usually enhances the power of a bishop-pair. This is because exchanges bring an endgame closer, which greatly favours White if the pawn-majorities are still as they are from the opening, ie White has a 4-3 kingside majority that can easily yield a passed pawn, while Black's 4-3 queenside majority can rarely do the same.
4. If both sides advance their pawn-chains and the pawns become fixed, this almost certainly favours the player with a knight rather than a bishop.
Here is one of my games, from last year's Pimlico summer congress, that illustrates some of the above points.
Spanton (171) - Gergely Kiss (207)
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bc5!? 8.Be3 Nf6!?
Black's set-up is aggressive and has been tried by strong players, including Capablanca, but was condemned by Alekhine, who said it endangered the bishop-pair.
9.f3 0-0 10.Nf5!?
Alekhine's recommendation. Lasker played 10.Nd2 in a simul: https://beauchess.blogspot.com/2020/01/laskers-spanish-inquisition-part-four.html
10...Bb4
Three previous opponents of mine played the too-accommodating 10...Bxe3?!
11.c3 Bxf5 12.cxb4 Rfe8 13.Kf2 Bg6
As Alekhine warned, Black's bishop-pair is gone, but White's queenside pawn-formation is damaged. Stockfish10 and Komodo10 reckon White has the upper hand.
14.Nc3 Nd7 15.Bf4 Ne5 16.Rhd1
I cannot recall why I did not play 16.Nxe5. I guess I must have feared Black's bishop combining with his rooks in a way that White's knight cannot work with the white rooks.
16...Kf8 17.h3
Threatening to trap the bishop with 18.Bxe5 Rxe5 19.f4 etc.
17...f6 18.Bxe5
Now I exchange minors, and get a rook to the seventh into the bargain.
18....Rxe5 19.Rd7 Re7 20.Rad1 Ke8 21.Rxe7+ Kxe7 22.Ke3 Bf7 23.f4 Bc4 24.Rd4 b5 25.Rd2 a5 26.bxa5
How should Black proceed?
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26...Rxa5
Black seems to have excellent drawing chances with the engines' 26...b4!? Their main line runs 27.Na4 Bxa2 28.Nc5 Rxa5 29.Rc2, when White is a pawn down but Black's queenside is weak. The engines continue 29...Rb5 30.b3 Bb1 31.Rc1 Kd6! 32.Kd4 Rxc5 33.Rxc5 Bxe4 34.Kc4 Bxg2 35.Kxb4, when Black has two pawns for the exchange, and the reduced material makes a draw very likely.
27.a3
Better is 27.Kd4!, but I missed that 27...Bxa2?? loses to 28.b4.
27...Ra8 28.g3 h5!?
We have a typical Spanish Exchange ending of white knight and rook versus black bishop and rook. Usually White has much-the-better pawn-majority. Here that is not quite as pronounced as usual, but even so it will be difficult for Black to create a passed pawn. The text becomes Komodo10's top choice, but in my view is double-edged - it gains space, but puts another pawn on the same-coloured squares as the black bishop, which weakens Black's dark squares.
29.h4 g6!? 30.Kf3
The engines prefer the Lasker-like thrust 30.f5.
30...Rh8 31.Nd1 Rd8?
Definitely a mistake - removal of the rooks makes it much easier for the white knight and king to manoeuvre.
32.Rxd8 Kxd8 33.b4
Fixing the c pawns.
33...Ke7 34.Ke3 Kd6
KG offered a draw.
(The rest of the notes are from my original post about this game.)
Normally a bishop outplays a knight in an ending with rival pawn-majorities. But here White can stop Black activating his queenside majority, after which it is just a question of whether White can win or only draw with his kingside majority. Bearing in mind that Black's bishop is fairly bad - four out of six black pawns are on light squares - Black's practical chances of holding this ending are very low.
35.Kd4 Be2 36.Nc3 Bf3 37.a4 bxa4 38.Nxa4 Bd1 39.Nc5 Bf3 40.Nb7+
40.e5+ is probably a quicker way to win, but there is no harm in probing with the knight as Black cannot prevent White coming back to the e5+ idea.
40...Ke6 41.Nd8+ Kd7 42.Nf7 Ke6 43.Nd8+
I got cold feet about 43.Nh8 because of 43...f5, when 44.Nxg6 seems to be the only way to keep winning chances. White then has to be certain he is winning after both 44...fxe4?! and 44...Bxe4. I was not sure, but I was fairly confident that returning the knight to the queenside would win.
43...Kd7 44.Nb7 Ke6 45.Nc5+ Kd6 46.Nd3 Ke6 47.Ke3 Bg2?
This speeds defeat, as does 47...Bg4? 48.Nf2. Black had to play 47...Bd1 or 47...Bh1, but in each case White wins slowly but comfortably, eg 47...Bd1 48.Nc5+ Kd6 49.Na6 Ba4 50.Kd4 Bc2 51.e5+ fxe5 52.fxe5+ Kd7 (52...Ke6 53.Nxc7 Kf5 54.e6 Kf6 55.Kc5) 53.Ke3 Bf5 54.Kf4 Bc2 55.Nb8+.
48.f5+ gxf5
If 48...Kf7, then 49.Nf4.
49.Nf4+ 1-0

Thursday, 23 January 2020

Lasker's Spanish Inquisition (part 10)

LASKER'S final Spanish Exchange as White came at New York 1924 against many-times US champion Frank Marshall.
Lasker - Marshall
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 Bg4!?
A popular move against 5.0-0, but relatively rare here.
6.dxe5 Qxd1+ 7.Kxd1 0-0-0
For 7...Bc5?!, see https://beauchess.blogspot.com/2020/01/laskers-spanish-inquisition.html
8.Ke1!?
By getting out of the pin, White makes it harder for Black to capture the e5 pawn.
8...Bc5
Ernst Grünfeld three times played 8...f6!? against Siegfried Wolf, scoring a win and two draws.
9.h3 Bh5 10.Bf4
Stockfish10 and Komodo10 prefer 10.Ke2!?, which transposes to a known position where it is normally White to move.
10...f5!? 11.Nbd2
Black is very active after 11.exf6 Nxf6 - exactly the type of position Marshall loved.
White is two pawns up after 11.exf5 Bxf3, but the position is unclear.
11...Ne7 12.Bg5 Bxf3 13.gxf3 Rhe8 14.Rd1 fxe4?
This is too cooperative. The engines give 14...h6 15.Be3 Bxe3 16.fxe3, and now 14...fxe4, when 15.Nxe4 does not hit anything, so Black equalises the material with 15...Rxd1+ 16.Kxd1 Nf5 etc
15.fxe4?!
15.Nxe4 was almost certainly better.
15...h6 16.Bh4 Bd4 17.Nc4 g5 18.c3 Ng6 19.cxd4 Nxh4 20.Ke2 Rd7?!
The engines like the active 20...Rf8 21.Rhf1 (or 21.Rd3 Ng2/g6) Nf3 22.Ke3 Rf4.
21.f3 Ng6 22.Ne3 c5 23.dxc5 Nf4+ 24.Kf2 Rxd1 25.Rxd1 Rxe5?
Better is 25...Nxh3+ 26.Kg3 Nf4 27.Nd5 Nxd5, although White still has an advantage after 18.Rxd5.
26.Nd5 Nxh3+ 27.Kg3 g4 28.Nf6 h5 29.f4 Rxc5?!
The engines' 29...h4+ 30.Kxh4 (30.Kxg4?! Nf2+) Nxf4 looks a better try.
30.Re1 Rb5 31.e5 Kd8 32.Nxh5 Ke7 33.f5 Ng5 34.Kxg4
White is a pawn up again, at least temporarily, and the rest is fairly simple.
34...Nh7 35.Nf4 Rxb2 36.Nd5+ Kd7 37.e6+ Kd6 38.e7 Kxd5 39.Re6 Rg2+ 40.Kf4 Rg8 41.e8=Q Rxe8 42.Rxe8 c5?
This accelerates the loss, but the engines' best line, 42...Kd6 43.Re6+ Kd7 44.Rg6 is convincing enough for White.
43.Rd8+ Kc6
Or 43...Kc4 44.Rh8 Nf6 45.e5 etc.
44.Rh8 1-0

Wednesday, 22 January 2020

Lasker's Spanish Inquisition (part nine) - THE Game

NOW we come to one of the most famous games in chess history, about which more nonsense has been written than probably any other encounter.
Lasker - Capablanca, St Petersburg Finals Round 7, is famous despite being very much short of the fireworks that mark out most celebrated games.
As the story is usually told, Capablanca was running away with the tournament and only needed to draw against Lasker to virtually guarantee first place.

Lasker, as usual, began quite slowly and, with just four rounds to go, he was trailing a full point behind Capablanca, whom he was desperately trying to catch. His last chance to fight for tournament victory was to beat the leader - Garry Kasparov, ChessBase's Mega database.

The young Cuban, who was confidently leading the tournament, needed only not to lose with Black against the current world champion in order to claim overall tournament victory - Vladimir Tukmakov in Modern Chess Preparation, New In Chess 2012.

Capablanca wanted a draw, because he was Black and because a half point would virtually clinch first prize, Réti said - Andrew Soltis in Why Lasker Matters, Batsford 2005.

What Réti actually wrote was: In Capablanca's remarkably cautious playing in this game it is easy to see that, owing to his favourable standing in the tournament, he has determined to play only for a draw - Masters Of The Chessboard, Dover 1976 reprint of the first English edition of 1932.

There is much more along these lines on the internet, where people seem prone to confuse Capablanca's standing at the start of the finals, where he was 1.5pts ahead of Lasker from the preliminary rounds, with his position when the two met in the finals with four rounds to go.
The truth is that when Lasker played Capablanca in this famous game, they were joint-first on 11pts.
However, it is fair to say Capablanca was still favoured by many to win the tournament.
The reason has to do with the unusual format at St Petersburg.
It began in the preliminaries with 11 players, the favourites being generally acknowledged as the world champion (Lasker), the fast-rising Capablanca, and Akiba Rubinstein, arguably the strongest player never to have played for the world title.
Five players would qualify for the finals, but they were not to include Rubinstein. Instead they consisted of Capablanca (unbeaten on 8pts), Lasker and Tarrasch (6.5pts), and Alekhine and Marshall (6pts).
Whether these famous five were dubbed grandmasters by Tsar Nicholas II is extremely doubtful, but at any event they would compete in a double-round-robin, bringing forward their scores from the preliminaries.
Because there were five players in the finals, one in every round was given a no-point bye.
By the time they reached round seven, where Lasker had the white pieces against Capablanca, the latter had already had his two byes, while the world champion was due one in the following round.
This meant that after their game, Capablanca had three more games (White against Tarrasch, Black against Marshall and White against Alekhine). Lasker had just two more games (Black against Tarrasch and White against Marshall).
I am sure I will not be spoiling it for anyone by stating that Lasker beat Capablanca. This gave him 12pts to the Cuban's 11pts.
The next day, in round eight, while Lasker sat it out, Capablanca went down to Tarrasch, remaining a point behind Lasker, and now having played an equal number of games.
But the drama was not over. In round nine, Lasker was held to a draw by Tarrasch, while Capablanca beat Marshall, setting up a dramatic last round.
Capablanca duly beat Alekhine to reach 13pts, but Lasker also despatched Marshall, winning the tournament with 13.5pts.
Here is the game about which so much has been written.
Lasker - Capablanca
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6
Kasparov: "(!) A very surprising choice. The Exchange Variation of the Ruy Lopez was a dangerous weapon in Lasker's hands. But nobody in the audience and amongst the participants believed that this quiet opening would work against Capablanca, whose excellent technique was already widely recognised. With the charming self-confidence of youth, José Raoul unfortunately shared this misconception and did not recognise Lasker's real intentions."
Soltis: "Tarrasch said that when the game was adjourned for a meal break, he asked Lasker why he chose 4.Bxc6. Lasker replied that he had studied Tarrasch's new idea in the Open Defence and couldn't find an improvement for White. Lasker feared that Capablanca would use the same opening. But this sounds like another Lasker smokescreen. Capablanca never played the Open Defence in his career, and Lasker often played the Exchange Variation without a special reason."
4...dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4
Kasparov: "Now even the queens are off the board. Is this the way to play for a win in the decisive game?"
Lasker in Lasker's Manual Of Chess (Dover 1960 reprint of the original 1947 David McKay Company edition): "Black must not refuse this simplification, otherwise he loses too much space."
7...Bd6
Capablanca in Chess Fundamentals (Bell 1973 reset reprint of original 1921 edition): "Black's idea is to castle on the kingside. His reason is that the king ought to remain on the weaker side to oppose later the advance of White's pawns."
Réti: "The bishop is very well-posted here. That is, if White succeeds in exchanging it, in order to deprive the second player of the weapon furnished by the two bishops, then, after the pawn recaptures on d6, Black's pawn-position will also be improved."
8.Nc3 Ne7 9.0-0
Reinfeld & Fine in Lasker's Greatest Games 1889-1914 (Dover 1965 reprint of the original 1935 The Black Knight Press edition entitled Dr. Lasker's Chess Career, Part I: 1889-1914): "Unusual but good: the king is to support the advance of the kingside pawns."
I played the more popular 9.Be3, and later castled queenside, in a win over a junior rated 1744/150 at Hastings 2019-20, but as I noted in part three of this series, Lasker generally kept his king on the kingside in 5.d4 lines of the Spanish Exchange, although often preferring long-castling if he had played 5.Nc3.
9...0-0
Reinfeld & Fine: "Also unusual, but this time less good. Black should castle queenside in order to guard his weak pawns."
Réti: "In a later game, Schlechter played at this point against [me] the much better move ...Bd7, combined with queenside castling [Vienna Trebitsch Memorial 1914, 0-1 39 moves]."
The text is the most-popular move, from a small sample, in ChessBase's Mega20, and was played four years ago by 2509-rated Nikita Petrov in a draw against Yuri Korsunsky (2411).
10.f4
Capablanca: "This move I considered weak at the time, and I do still. It leaves the e pawn weak, unless it advances to e5, and it also makes possible for Black to pin the knight by ...Bc5."
Reinfeld & Fine: "Having the majority of pawns on the kingside, Lasker immediately sets out to utilise this advantage."
10...Re8
Capablanca: "Best. It threatens ...Bc5, Be3 Nd5. It also prevents Be3 because of ...Nd5 or ...Nf5."
Reinfeld & Fine: "Superior to the text was 10...f5 11.e5 Bc5 12.Be3 Bxd4! 13.Bxd4 b6 [Korunsky - Petrov, EU-Cup Novi Sad 2016, saw 13...Rfd8 14.Bf2 Ng6, with Black later successfully blockading White's passer] 14.Rad1 c5 15.Be3 Be6, and in view of the bishops of opposite colour and Black's initiative on the queenside, the position is about even."
Soltis gives the text an exclamation mark, stating that it "threatens to seize an edge with 11...Bc5 12.Be3 Nd5!"
Réti: "A more vigorous move would be ...Bc5, which Lasker prevents with his following move, which is excellent."
Kasparov: "Later Dr Tarrasch suggested a better line: 10...f5 11.e5 Bc5 12.Be3 Bxd4 13.Bxd4 b6, and despite White's strong passed pawn, Black has enough defensive resources. So strong was the impression of Lasker's original plan that the commentators tried to improve Black's play at the earliest possible stage! But Capablanca was right in his assessment: Black had little to worry about."
For what it is worth, Stockfish10 and Komodo10 agree with Capablanca and Soltis.
11.Nb3 f6
Lasker (commenting generally on ...f6 in the Spanish Exchange rather than on this exact position): "The move ...f6, ordinarily weak becomes very effective after the exchange of the hostile king's bishop. This observation is due to Steinitz. Bernstein has applied it happily in recommending against 5.Nc3 the defence 5...f6 in this Exchange Variation."
Réti: "An absolutely unnecessary defensive move, for White's e5 would be of advantage only to Black, since he would have the points d5 and f5 free for his pieces."
Soltis: "Before this game, the move ...f6 was considered good for Black in the Exchange Variation, 'even necessary' said [Russian master Samuil] Vainshtein. After the game, annotators dismissed ...f6 as questionable because 'it makes [the move] f5 stronger'. We [have] got so much smarter over the years that when ...f6 is played, it's taken for granted that f5 will be strong."
Reinfeld & Fine: "Preventing e5 but weakening e6. Preferable was 11...Be6 and if 12.e5 [then] 12...Bb4 with good chances."
Capablanca: "Preparatory to ...b6, followed by ...c5 and ...Bb7 in conjunction with ...Ng6, which would put White in great difficulties to meet the combined attack against the two centre pawns."
White to make his famous 12th move
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12.f5!?
Kasparov awards this an exclamation mark, stating: "Under the classical rules of the Steinitz positional school this move has to be damned. White gets a weak pawn on e4, Black a stronghold on e5, with a devaluation of White's pawn-advantage on the kingside -- too many negative points for just one move. But Lasker's eagle eye had seen much further."
Capablanca: "It has been wrongly claimed that this wins the game, but I would like nothing better than to have such a position again. It required several mistakes on my part finally to obtain a lost position."
Tukmakov awards an exclamation mark, with the laconic note: "12.Be3 Nd5!"
Reinfeld & Fine also give an exclamation mark, stating: "A surprising and courageous move which gives White a definite advantage. The move creates a hole for Black's pieces at e5, but it helps White in three ways: 1) it fixes Black's f pawn, enabling White to undertake a kingside attack with g4-g5; 2) it contains Black's queen's bishop; 3) it will later enable White to plant a knight at e6. The fact that Lasker was able to carry out every one of these objectives, shows that Capablanca did not properly grasp the essentials of the position."
Soltis: "Tarrasch had ridiculed f5 when it occurred in a similar position … but Tarrasch's knee-jerk classicism had been proven wrong when Lasker won [against Salwe five years earlier at St Petersburg 1909] and the f5 idea had worked reasonably well in other previous games."
Réti: "A surprising move. On closer examination, however, it is perceived that … apparent disadvantages go hand in hand with less apparent but actually more important advantages."
12...b6
Kasparov: "12...Bd7 13.Bf4 Rad8 was recommended by stern post-mortem analysts. But obviously the bishop is better placed on b7, where it attacks the pawn on e4."
Reinfeld & Fine: "A wiser continuation was 12...Bd7 and if 13.Bf4 [then] 13...Bxf4 14.Rxf4 Rad8 15.Rd1 Bc8 and White will find it difficult to press home his advantage."
Soltis: "From this point on the annotators looked for a way to save Black's position - a remarkable admission of the strength of 12.f5."
Réti: "Because Capablanca hits on the unfortunate idea of withdrawing his queen's bishop from the defence of the point e6, that point becomes much weaker than e5 is for White. The simplest alternative is probably the development ...Bd7, combined with ...Rad8."
Tukmakov gives 12...Bd7 13.Bf4 Rad8 without comment.
13.Bf4 Bb7
Kasparov gives this move a question mark, commenting: "Now a serious mistake! In general Black should be happy to undouble his c-pawns, but here the pawn on d6 will become a permanent weakness."
Capablanca: "Played against my better judgment. The right move of course was 13...Bxf4."
Soltis also awards a question mark, saying Capablanca's suggestion has been "analysed well into a minor-piece ending."
Réti says Black was "absolutely forced to exchange."
14.Bxd6
Reinfeld & Fine: "Good: now Black has a new weakness at d6."
Soltis gives the move an exclamation mark, stating: "White makes the d pawn the board's only real target."
14...cxd6 15.Nd4
Capablanca: "It is a curious but true fact that I did not see this move when I played 13...Bb7."
15...Rad8
Capablanca: "The game is yet far from lost, as against the entry of the knight, Black can later on play ...c5, followed by ...d5."
Kasparov gives the move a question mark, stating: "Capablanca doesn't take White's plan seriously. The knight on e6 will be a bone in the throat. So 15...Bc8 was obligatory. Maybe the Cuban was too proud to recognise his mistake so soon."
Reinfeld & Fine also award a question mark: "After this he will never be able to drive White's knight from e6."
Soltis says White's advantage is not great after 15...Bc8 "but it is enough to play for a win."
16.Ne6 Rd7 17.Rad1
Capablanca: "I now was on the point of playing ...c5, to be followed by ...d5, which I thought would give me a draw, but suddenly I became ambitious and thought I could play 17...Nc8 and later on sacrifice the exchange for the knight at e6, winning a pawn for it, and leaving White's e pawn still weaker."
Soltis says White would be much better after 17...c5 18.Nd5 Bxd5 19.exd5 b5 20.g4! with a kingside attack.
Reinfeld & Fine say 17...c5 18.Bf2, followed by Rfd2, "would practically stalemate all of Black's pieces."
17...Nc8 18.Rf2 b5
Reinfeld & Fine: "In order to obtain some more room. But the move eventually leads to the opening of the a file, which can only result in White's favour because of his superior mobility. Black's best chance was to give up the exchange."
Unfortunately, the immediate ...Rxe6?, if this is what they meant, fails to the engines' 19.fxe6 Re7 20.e5!, when 20...dxe5? leads to mate after 21.Rd8+ while 20...fxe5 21.Rdf1 Re8 22.Ne4 is not much better, eg 22...d5 23.e7! Nxe7 24.Nd6. That leaves 20...Rxe6, which is met by 21.exd6 Nxd6 22.Rfd2 Nf7 23.Rd7 with a large advantage.
19.Rdf2 Rde7
The engines reckon 19...b4 gives more hope, but much prefer White after 20.Ne2.
20.b4
Reinfeld & Fine: "Stops ...c5 or ...b4."
20...Kf7 21.a3 Ba8
Capablanca: "Had I played ...Rxe6, fxe6 Rxe6, as I intended to do when I went back with the knight to c8, I doubt very much if White would have been able to win the game. At least it would have been extremely difficult."
Kasparov says Capablanca's line "would have given him the best fighting-chances."
Soltis says Black, after the exchange sacrifice, "can establish a semi-fortress, with his king at e7 and knight at c4." He suggest best play runs 23.Rd4 c5! 24.bxc5 dxc5 25.Rd7+ Re7 "followed by ...Nb6." He concludes: "Black is not losing." The engines continue 26.Rd8 Nb6, when Stockfish10 reckons 27.Nd5 Bxd5 28.exd5 Rd7 29.Rb8 Nc4 30.Rc8 is winning, but Komodo10 'only' gives White the upper hand.
22.Kf2 Ra7 23.g4
Réti: "We recognise once more the type of game in which the advantage of controlling more territory is turned to account."
23...h6 24.Rd3 a5 25.h4 axb4 26.axb4 Rae7
Capablanca: "Black, with a bad game, flounders around for a move. It would have been better to play ...Ra3 to keep the open file, and at the same time to threaten to come out with the knight at b6 and c4."
27.Kf3 Rg8 28.Kf4 g6 29.Rg3 g5+
Kasparov: "The last move to be criticised by the annotators. But it's too late for good advice."
30.Kf3 Nb6 31.hxg5 hxg5 32.Rh3!
Kasparov: "32.Rxd6 would have given Black some extra breathing time."
32...Rd7 33.Kg3 Ke8 34.Rdh1 Bb7 35.e5! dxe5 36.Ne4 Nd5 37.N6c5 Bc8
Or, for example, 37...Rdg7 38.Nxb7 Rxb7 39.Nd6+.
The game finished:
38.Nxd7 Bxd7 39.Rh7 Rf8 40.Ra1 Kd8 41.Ra8+ Bc8 42.Nc5 1-0

Tuesday, 21 January 2020

Lasker's Spanish Inquisiton (part eight)

IT is always interesting to see who varies first when two players repeat a variation, especially in a match.
Emanuel Lasker - David Janowski
Paris 1909, Match 2, Game 5
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Bg4 7.Nc3 Qxd4 8.Nxd4 0-0-0 9.Nde2
Lasker played 9.Be3 the previous time he had the white pieces in this match.
9...Bc5 10.f3 Be6 11.Bd2
This looks a rather modest development of the dark-square bishop, but Lasker wants to castle long. Normally in 5.d4 lines he kept his king in the centre, moving it to the kingside later to support his kingside pawns. But the position here of the black dark-square bishop makes that plan problematic.
11...Ne7 12.0-0-0 f6 13.Nf4 Bc4!?
This may appear strange, but the idea is to prevent White easily playing Nd3 without first having to slightly compromise his queenside pawn-formation.
14.b3 Bf7 15.Nd3 Bd6 16.Bf4 Ba3+ 17.Kb1 Ng6 18.Bc1 Bd6 19.g3 c5 20.Nd5 Rhe8 21.Bb2 Bxd5!?
Giving up the bishop-pair, but getting rid of White's kingside majority. Black also gets a rook to the seventh, although this is temporary.
22.exd5 Re2 23.Rde1 Rde8 24.Kc1 Kd7 25.Rxe2 Rxe2 26.Kd1 Re3 27.Rf1 b5!?
As in game three, Janowski follows the modern black plan of pushing his queenside pawns.
28.Kd2 Re8 29.c4 c6 30.Rc1
Keeping some life in the game, whereas 30.dxc6+ Kxc6 looks very drawish.
How should Black continue?
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30...b4!?
Gaining space but starting to make his bishop look bad. On 30...cxd5, Janowski may have feared 31.cxb5 axb5 32.Nxc5+, when Black has two isolanis and White might be able to create a passed pawn on the a file. However, Black can play 31...c4 32.bxc4 dxc4 33.Rxc4 axb5 with another very drawish position. The engines also reckon Black could have kept the pawns in tension by playing 30...Rc8. The match situation - Lasker had won three of the first four games, and drawn the other - may have influenced Janowski's choice.
31.dxc6+ Kxc6 32.Re1 Ra8!?
Giving up an open file (but White's rook does not have a good entry square) in favour of possible play down the a file.
33.Ra1 Rd8 34.Ke2 a5 35.a3 Bc7 36.a4
Now all Black's queenside pawns are fixed on the same colour complex as his bishop. This is by no means fatal, but it does mean the black bishop can only have a defensive role on that part of the board, whereas both white minor pieces have targets.
36...h5 37.Rd1 h4 38.f4 hxg3 39.hxg3
Note that while White's kingside pawns are on dark squares (as are Black's), they are not, at least as yet, fixed.
39...Rh8 40.Nf2 Ne7 41.Kf3 Nf5 42.Rd5 Ne7 43.Rd1 Nf5 44.Rd5 Nd6?!
Janowski is not satisfied with a draw. In the light of what happens, it is easy to criticise this decision, but he probably felt the need to try to change the course of the match.
45.Bc1 Bb6 46.Be3 Re8
Not 46...f5? as the white knight occupies e5 via d3, but perhaps 46...g6!? is an improvement.
46.f5 Nc8?
The engines suggest 46...Nb7, but after 47.Nd3 Black has three pieces tied to the defence of his c pawn, and he is reduced to shuffling his rook about while White is free to decide how to proceed. One line, given by the engines, runs 47...Rh8 48.Nf4 (aiming for e6) Nd8 49.g4, with a position much easier for White to play.
47.Ne4 Rh8 48.Bxc5 Bc7 49.Nf2 Rh2?
Better is 49...Nb6 50.Bxb6 Bxb6, but White should win.
50.Bf8 Bb6 51.Ne4 Rh7 52.Nc5 Bc7 53.Ne6 Be5 54.Rc5+ Kd7 55.Rxa5 Rh3 56.Rd5+ Kc6 57.Nf4 Bxf4 58.Kxf4 Nb6 59.Rd6+ Kc7 60.Rd3 1-0
In the final position, Black is losing a third pawn. Janowski's game went downhill quickly, but Exchange Spanish endgames can be deceptively simple, with management of the pawns often crucial.

Monday, 20 January 2020

Lasker's Spanish Inquisition (part seven)

THIS game is labelled in ChessBase's 2020 Mega database as a "casual" encounter between Lasker and David Janowski.
But it was actually part of a 10-game match in Paris in 1909, following on from a four-game match between the same opponents earlier in the year that finished with two wins apiece.
Lasker won the second match by seven wins to one with two draws.
A year later they played another match, this time with Lasker's world championship title at stake. The result was even more one-sided - Lasker scored eight wins while conceding just three draws.
Emmanuel Lasker - David Janowski
Paris 1909, Match 2, Game 3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Bg4!?
Very much second in popularity to 6...Qxd4, but Black scores 57% with it in Mega20, compared with 53% for the normal move.
7.Nc3 Qxd4
According to Andrew Soltis in Why Lasker Matters (Batsford, 2005), Black's plan in this line is to quickly exchange queens and castle long.
8.Nxd4 0-0-0
I imagine both players were pleased with the opening - Janowski revelled in having the bishop-pair; Lasker, on the other hand, could be satisfied at having got queens off against a much-feared tactician.
9.Be3 Bb4 10.Ne2 Bxe2!?
Soltis does not like this move, but it is the choice of Stockfish10 and Komodo10. Incidentally, it suggests Janowski was not such a worshipper of the bishop-pair as is sometimes thought.
11.Kxe2 Bxc3 12.bxc3
It is unusual, to say the least, for White to end up with the only bishop in the Exchange Variation of the Spanish. Stockfish10 reckons Black is better; Komodo10 rates the position as level. Soltis does not commit to an opinion, but implies victory is likely to go to the player who can create a passer, and that this is easier for White.
12...Nf6 13.f3 Nd7 14.Rad1 Ne5 15.Rd4 b6
Soltis says Black "in theory" should avoid ...b5 because White can blockade on the c5 square, but he says 15...b5 was nevertheless right as it sets up 16...Nc4. Komodo10 likes Soltis's suggestion; Stockfish10 prefers the text.
16.f4 Nd7 17.Rhd1 c5 18.R4d3 Nb8?! 19.Kf3!?
The engines prefer a mass exchange of rooks, leaving an ending of bishop versus knight with rival pawn-majorities, which nearly always favours the bishop.
19...Rde8!?
Janowski seems to have concluded his 18th move might have been a mistake.
Can you guess Lasker's next?
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20.f5!?
Lasker's trademark move in the Exchange Spanish. The engines very much dislike it, but Soltis awards an exclamation mark. He explains: "A fundamental endgame rules holds that the way to create a passer is to advance the unopposed pawn first. Here that means 20.e5. However because Black retained rooks, 20...Re7 and ...Nc6 would be a solid defence."
20...f6!?
The engines like this move; Soltis gives it a question mark. He reckons it gives White an extra resource he would not have if the pawn stayed put.
21.g4 Re7
The engines at first claim 21...g5!? gives Black a substantial advantage. Given time, they very much downgrade their evaluations, while still slightly favouring Black. One line, given by Stockfish10, runs 22.h4 h6 23.Bf2 Nc6 24.Bg3 gxh4 25.Bxh4!? (25.Bf4 h5 26.gxh5 Rxh5 is a serious alternative) Ne5+ 26.Kf4 Nxd3+ 27.cxd3, when the engines agree White has almost full compensation for the exchange.
22.Bf4 Rhe8 23.Re3 Nc6 24.g5?
Soltis says - and the engines agree! - that 24.h4 is best. It certainly seems the normal way to proceed.
24...Na5?!
Soltis and the engines give 24...fxg5 25.Bxg5 Ne5+ 26.Kf4 Rf7. "Even though this grants White a passed pawn," Soltis writes, "he has trouble meeting 27...h6 28.Bh4 g5+."  The engines give 27.Rd8+! Rxd8 28.Bxd8 Nxg6+ 29.Kg4 Kxd8 30.fxg6 hxg6, when White has chances to hold the pawn-down rook-and-pawn ending.
According to the engines, 24...Rf7 is also OK for Black. The text seems to be somewhat irrelevant as it neglects the kingside, where the game is likely to be decided.
25.h4 Nc4 26.Re2 Rf7 27.Rg1 Kd7?
Soltis gives best play as 27...g6! 28.h5! gxf5 29.g6! hxg6 30.exf5 Ne5+! (his punctuation throughout) 31.Bxe5 fxe5, the point being that after, say, 32.hxg6 Rxf5+ 33.Ke3 Kd7 34.g7 Rg8 35.Rg6 Ke7 36.Reg2, the position is deadlocked.
28.h5 Nd6
If 28...Ne5+, then 29.Bxe5 Rxe5, when Soltis's 30.gxf6 gxf6 31.h6 "followed by Rg8 or Rg7" is just one way to win.
29.h6 fxg5 30.Rxg5 g6
Or 30...gxh6 31.Rh5 Rf6 32.Rd2 (not 32.e5? Rxf5) Kc6 33.e5 Rcf5 34.Rxd6+ etc.
The game finished:
31.fxg6 hxg6 32.Rxg6 Ref8 33.Rg7 Rxg7 34.hxg7 Rg8 35.Rg2 Ne8 36.Be5 Ke6 37.Kf4 Kf7 38.Kf5 1-0

Sunday, 19 January 2020

Lasker's Spanish Inquisition (part six)

THIS was the first game of the 1908 world championship match.
Emanuel Lasker - Siegbert Tarrasch
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4
Lasker had played 5.Nc3 in a win against Tarrasch 12 years before.
5...exd4 6.Qxd4 Qxd4 7.Nxd4 c5!?
Fred Reinfeld & Reuben Fine condemned this in a 1935 book, reprinted by Dover in 1965 as Lasker's Greatest Chess Games 1889-1914, for weakening Black's queenside, but it has been the choice of many strong players.
8.Ne2 Bd7 9.b3!?
Reinfeld & Fine criticise this rare move as "an indifferent idea," preferring 9.Bf4 followed by Nd2 "with pressure on Black's queenside pawns."
Andrew Soltis in Why Lasker Matters (Batsford, 2005) says "the natural response to ...c5" is Nbc3, intending Nd5.
9...Bc6
Reinfeld & Fine recommend castling, with ...f6 to follow to blunt White's bishop.
Soltis says Alekhine was impressed by Schlechter's recommendation of 9...c4. The future world champion used it in a 1909 game, meeting 10.bxc4 with 10...Ba4?!, when 11.c3 0-0-0 was unpleasant for White. But Stockfish10 and Komodo10 come up with a major improvement, 11.Nbc3, the point being that Black's light-square bishop is trapped after 11...Bxc2?? 12.Kd2, so instead has to retreat with loss of tempo.
10.f3 Be7 11.Bb2 Bf6?!
Reinfeld & Fine are surely right in calling this "illogical, since Black's only compensation for his weakened queenside is his two bishops." Soltis calls it "a curious decision."
12.Bxf6 Nxf6 13.Nd2 0-0-0 14.0-0-0 Rd7 15.Nf4 Re8
As Soltis points out, 15...Rhd8? loses a pawn to 16.Nd3 as 16...b6?? allows 17.Ne5.
16.Nc4 b6 17.a4
Soltis gives this an exclamation mark, but does not explain why.
17...a5
This is Komodo10's choice, but Reinfeld & Fine call it "purposeless," saying Black should have played ...Kb7 followed by ...b5 to create counterplay.
18.Rxd7 Nxd7 19.Rd1 Ne5 20.Nxe5 Rxe5
Reinfeld  & Fine say the ending favours White "because of the relative immobility of Black's bishop."
21.c4
This gets an exclamation mark in both books, but the move is almost compulsory as otherwise Black undoubles his pawns with ...c4.
21...Re8 22.Nh5 Rg8?!
A horrible-looking move. The engines point out the better 22...Re6, which effectively prevents 23.Nxg7 as White does not want to allow 23...Rg6 followed by ...Rxg2.
23.Rd3 f6 24.Kd2 Be8 25.Ng3 Bd7
Soltis: "In principle, Black should be reluctant to trade rooks (...Bg6 and ...Rd8) because there is a danger that White will simply create a passed kingside pawn. Here ...c6 followed by ...Kc7 and ...b5 looks right."
26.Ke3 Re8 27.Nh5 Re7 28.g4
Another move that Soltis rewards with an exclamation mark, but does not explain what is so good about it. However, note that 28.f4? loses the e pawn, eg 28...Bc6 29.Ng3 h5 30.h4 Bxe4 31.Nxe4 f5 etc.
28...c6
Soltis praises this move, saying it is necessary to keep the knight out of d5.
29.h4 Kc7
How should White proceed?
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30.g5?!
This move passes without comment in both books, but it seems to be an example of how Lasker occasionally became impatient to finish a game.
The engines suggest 30.Rd1, but do not really come up with a plan for further activating White's kingside.
Perhaps 30.Kf4!? was best. The idea is to be able to play g5 without allowing the reply ...f5.
30...f5 31.Ng3 fxe4 32.Nxe4
Soltis says "the thematic" 32.fxe4 is better, but that Black is fine with ...b5. The engines reckon ...Rf7 is also satisfactory.
32...Bf5 33.h5 Rd7! 34.Rc3!?
The players have seen, and the commentators agree, that White cannot make progress after 34.Rxd7+ Kxd7 35.Kf4 Ke6. The text, hardly surprisingly, does not improve White's position, but avoids simplification - a sign, surely, that Lasker regarded himself as the superior player.
34...Rd1 35.Kf4 Bd7?
Tarrasch goes wrong almost immediately. He had a simple draw with 35...Bxe4 36.Kxe4 Rh1, which wins the h5 pawn, although White is in no trouble either as Black cannot create a passer on the queenside.
36.Re3 Rh1 37.Ng3 Rh4+ 38.Ke5 Rh3  39.f4 Kd8 40.f5 Rh4 41.f6 gxf6+ 42.Kxf6 Be8 43.Nf5!
Not the only way to win but, as Reinfeld & Fine say, "pretty and decisive."
43...Rf4
Or 43...Rxh5? 44.Rxe8+ Kxe8 45.Ng7+.
44.g6 hxg6 45.hxg6 Rg4 46.Rxe8+!? Kxe8 47.g7 Kd7 48.Nh4 Rxg7!?
A desperate last try, but White has it all covered.
49.Kxg7 Ke6 50.Nf3 Kf5 51.Kf7 Ke4 52.Ke6 Kd3 53.Kd6 kc3 54.Kxc6 Kb3 55.Kb5 1-0

Saturday, 18 January 2020

Lasker's Spanish Inquisition (part five)

LASKER'S opponent in this 1908 Dutch simul, Benjamin Leussen, was a strong master who recorded wins in proper games - not simuls - against Aron Nimzowitsch, Rudolf Spielmann, Max Lange and other celebrated players.
Lasker - Luessen
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 c5 8.Ne2 Bd6
Steinitz, 14 years earlier, had preferred 8...Bd7.
9.Nd2 b5!?
This is the first time in this series we have seen someone pursue against Lasker the type of plan popular at club level, namely to push the queenside pawns. Lasker's contemporaries seem, on the whole, to have feared the pawns would become weak by being fixed as targets for White's knights.
10.Nb3 c4!? 11.Nbd4 Bb7 12.f3 Ne7 13.Bf4 0-0-0 14.Bxd6 Rxd6
Stockfish10 and Komodo10 agree this is better than accepting a backward pawn with 14...cxd6. Either way, Black has lost the bishop-pair.
15.c3?!
But Black, with his lead in development, gets something of an initiative after this. More solid was 15.0-0-0.
How does Black grab the initiative (you need to find his next two moves)?
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15...c5 16.Nc2 f5
Opening lines to the white king.
17.exf5 Nxf5 18.Rd1 Rd3?!
This looks good at first glance, but after White's reply, Black loses a tempo compared with the direct 18...Rxd1+.
19.Nf4 Rxd1+
19...Re8+ drives White's king to the kingside, which is where it wants to be to support his kingside pawns.
20.Kxd1 Nh4 21.Rg1 g5 22.Ne2
The engines prefer 22.Ne6!?, and if 22...Nxg2!, then 23.Nxc5 Bxf3+ 24.Kd2, when Black has won a pawn but the engines reckon White's active knights give good compensation.
22...h5 23.Ne1 Ng6 24.Rf1 Ne5!?
Stronger, according to the engines, was 24...h4 or 24...Rf8.
25.Nc1?!
White needed to create counterplay. The engines suggest 25.h4 or 25.Ng3.
25...Rf8!?
This keeps an advantage for Black, but even stronger was the obvious 25...Rd8+, when 26.Kc2 loses to Stockfish10's 26...Ng4! 27.fxg4 Be4+. So White has to play 26.Ke2, when the engines continue 26...Ng6 27.g3 Kc7, reckoning Black is well on top (but there does not seem to be an immediate knockout blow).
26.h3 g4 27.hxg4 hxg4 28.Ke2 Re8 29.fxg4?
The king had to get off the e file.
29...Nxg4+!?
Even better, according to the engines, is 29...Nd3 30.Kd2 Nxb2.
30.Kd2 Rd8+ ½–½
This looks like another lucky escape for Lasker - Komodo10 gives Black the upper hand, while Stockfish10, which admittedly tends to be more extreme in its evaluations, reckons Black is winning. Not for the first time in Lasker's simul career, an opponent did not feel confident enough to try for a win in an endgame.

Friday, 17 January 2020

Lasker's Spanish Inquisition (part four)

THIS game seems to have been part of a simultaneous exhibition in the City of London given when the world champion toured the UK in 1908.
Emanuel Lasker - CE Wood
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bc5!? 8.Be3 Nf6!? 9.f3
For Alekhine's disparaging comments on Black's last two moves, albeit played in the reverse order, see https://beauchess.blogspot.com/2019/06/uncork-bubbly.html
9...0-0 10.Nd2
The most-popular move in ChessBase's 2020 Mega database, but Alekhine preferred 10.Nf5!?, commenting: "Of course!"
10...Bb6
Capablanca played the more-popular 10...Re8 six years later in a game that ended in a draw.
11.Nc4
How should Black meet the threat to his dark-square bishop?
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11...Re8?!
11...Ba7 preserves the bishop-pair, at least in the short-term. However in Spanton (168) - David Rowson (183), London Summer League 2019, there followed the novelty 12.Ne2 (not 12.Nf5?? Bxf5 13.exf5 Rfe8 14.Kf2 Rxe3 15.Nxe3 Nd5 16.Rhe1 Re8), when, with 12...Bb8, 12...b6 and 12...c5 all being unpalatable, Black played 12...Bxe3, getting a position that older engines tend to regard as level, but which Stockfish10 and Komodo10, rightly in my view, regard as better for White (1-0, 52 moves).
12.Nxb6 cxb6 13.0-0-0 c5 14.Ne2 Be6 15.Nc3 Rac8 16.Rd6 b5 17.Rhd1 h6 18.Kb1 Kh7 19.Ne2 b4 20.Nc1 Rc7 21.Nd3 Nd7 22.Nf4 Ne5 23.Nxe6 fxe6
After some middlegame manoeuvring, Lasker has engineered a position in which he has two active rooks and a bishop versus two passive rooks and a knight (it is unusual for White to end up with the sole bishop in an Exchange Spanish, but this was not the only time it was to happen to Lasker). There are many ways to continue, eg Stockfish10 and Komodo10 show White can win a pawn with 24.Bf4 Nc4 25.Rxe6! But this game was part of a simul, and it maybe Lasker relaxed his guard here …
24.Rd8? Rxd8 25.Rxd8 Rd7 26.Rxd7 Nxd7
Perhaps Lasker missed that all the rooks come off because Black threatens a back-rank mate, or it is possible he misjudged the bishop-v-knight ending.
27.Kc1 b5 28.Kd2 Kg6
There are rival pawn-majorities, which normally favours the bishop, but here it is difficult for White to create a passed pawn, but at least he should be in no danger of losing.
29.Bf4
Possibly Komodo10's 29.f4!? is better.
29...e5!?
Now the bishop has two targets (e5 and c5), but the knight easily defends them.
30.Bg3 Kf6 31.f4 exf4 32.Bxf4 Kxe6 33.Ke3 Ne5 34.Bxe5??
A familiar concept. The stronger player sees other moves lead to a dead-draw, so he makes one more attempt to change the balance, only to turn a draw into a loss.
34..Kxe5 35.b3 ½–½
Lasker presumably offered the draw, having belatedly realised it is White's king, not Black's, that will have to withdraw. The point is Black has loads of reserve tempi, while White's soon run out, eg 35...g5 36.g4 c4 37.h3 a5 etc. A lucky escape.

Thursday, 16 January 2020

Lasker's Spanish Inquisition (part three)

AFTER his loss to Steinitz with 5.d4 in a Spanish Exchange in their first world championship match, Lasker successfully switched to 5.0-0 for several years.
Then in round nine of Cambridge Springs 1904 he used 5.d3 to beat Mikhail Chigorin in a queens-on middlegame.
Five rounds later he returned to his old favourite.
Lasker - Jackson Showalter
1.e4 e5 2.nf3 Nc6 3.Bb5 a6 4.Bxc6 dac6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4
This position had quickly been established as a tabiya in the 5.d4 line. The real game begins now.
7...Nf6!?
The first example of this move in ChessBase's 2020 Mega database. Chigorin adopted it the following year, but it has never eclipsed 7...Bd7 or 7...c5 in popularity.
8.f3 Bd7 9.Be3 0-0-0 10.Nd2 Re8 11.Kf2
Lasker generally kept his king on the kingside in 5.d4 lines, but was much more likely to castle long after playing 5.Nc3.
11...g6 12.Rad1 h5 13.h4 c5 14.Ne2 b6 15.Rhe1 Bc6 16.Bf4 Bg7 17.Nc4 Nd7 18.c3 Bb5 19.Ne3 Ne5 20.Bxe5!?
Giving up his remaining bishop - a double-edged decision. On the one hand, White gets nearer an endgame, where he hopes his better pawn-majority will prove decisive. On the other hand, the bishop-pair tends to work best on a less-cluttered board.
20...Bxe5 21.g3 Bg7 22.Nf4 Rd8 23.Nh3 Rxd1 24.Rxd1 Rd8!?
The same double-edged considerations apply as at move 20.
25.Rxd8+ Kxd8
Stockfish10 reckons White is better, but Komodo10 rates the position as dead-equal.
26.Ng5 Be8 27.f4 c6?!
The engines reckon this is a mistake. They want Black to play 27...Ke7, again differing as to whether White is better.
28.e5 b5 29.b3 Bf8 30.c4
White's queenside pawn-formation means Black can never undouble his c pawns by normal means.
30...Be7 31.f5?!
This seems impatient. Probably better was 31.Kf3, and if, as in the game, 31...Bxg5, then 32.hxg5 leaves Black weak on the dark squares. Black may be theoretically OK, but in practice these positions are easier for the player with the knight.
31...Bxg5 32.hxg5 Bd7?!
A better defence seems to be 32...gxf5 33.Nxf5 Bd7 34.Nd6 Ke7, or possibly the immediate 32...Ke7.
33.e6
Possibly even stronger is the engines' 33.g4!? hxg4 34.e6 fxe6 35.fxg6, eg 35...Ke7 36.Nxg4 Kf8, when both 37.Ne5 and 37.Nf6 look to be winning.
33...fxe6 34.fxg6?!
This allows a successful defence, whereas creating a protected passed pawn with 34.f6 gives very good winning chances.
34...Ke7 35.Kf3 Be8 36.g7 Kf7 37.Kf4 Kxg7 38.Ke5 Bg6
White's king invades the black queenside, but Black's bishop returns the compliment.
39.Kd6 Bb1 40.a4
Or 40.a3 Ba2 41.Kxc6 Bxb3 42.cxb5 Ba4 43.Kxc5 Bxb5 with a draw.
40...Ba2 41.Kxc6 Bxb3 42.axb5 axb5 43.cxb5 Ba4 44.Kxc5 Bxb5!
Maybe this is what Lasker missed at move 34.
45.Kxb5 Kxg6 ½–½
A draw was agreed as Black easily liquidates White's pawns.

Wednesday, 15 January 2020

Lasker's Spanish Inquisition (part two)

EMANUEL Lasker tried the modern favourite 5.0-0 against James Mortimer at the British Chess Association congress in London in 1892, but only drew.
Two years later, in the 13th game of his first world championship match with Wilhelm Steinitz, he returned to 5.d4.
Lasker - Steinitz
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 c5!?
The first example of this move in ChessBase's 2020 Mega database. It is still respected today, but is second in popularity to 7...Bd7.
8.Ne2
8.Nb3 is also often seen, but the knight then becomes a target for a black queenside expansion.
8...Bd7 9.Nbc3 0-0-0 10.Bf4 Bc6
10...Bd6?! 11.Bxd6 cxd6 undoubles Black's c pawns, but gives him a weak pawn on the half-open d file.
11.0-0 Nf6 12.f3 Be7 13.Ng3 g6 14.Rfe1!?
A 'mysterious' rook move. Competing on the d file with R(either)d1 is natural.
14...Nd7 15.Nd1 Nb6 16.Nf1 Rd7 17.Be3
It is hard to guess what Lasker intended with his minor-piece manoeuvrings, but they hardly helped his position.
17...Rhd8 18.b3!?
The choice of Stockfish10 and Komodo10, but it allows Black to more-or-less forcefully undouble his c pawns, after which Black, having the bishop-pair on a board with an open centre, must be better. This suggests that while White has not played any out-and-out bad moves, his general plan (or non-plan) of seemingly dithering, has been sub-standard.
Black to make his 18th move
*****
*****
*****
*****
*****
18...c4! 19.Bxb6?!
Charles Devidé in A Memorial To William Steinitz, reprinted by Dover in 1974 as William Steinitz: Selected Chess Games, states: "Nf2 was much better. Lasker, however, did not discern the stratagem in its fullness." The engines also dislike the text, but reckon 19.c3 gives the best chance of holding the game.
19...cxb6 20.bxc4
The engines suggest 20.Nde3 cxb3 21.cxb3, when Black still has doubled queenside pawns, but his pieces are much more active than White's.
20...Bb4 21.c3 Bc5+ 22.Kh1 Rd3 23.Rc1 a5
White is horribly passive, but the engines reckon a better way to exploit this is to immediately probe on the kingside, their main line running 23...f5 24.Nb2 R3d7 25.exf5 Ba3 26.Re2 gxf5, when Black remains more active.
24.Nde3 f5 25.exf5 gxf5 26.h3
Devidé: "If 26.Nxf5 (then) 26...Rxf3 27.N5f3 Rf2 wins." In this line. 27.Nd4 is better, but 27...Rf2 28.Nxc6 bxc6 undoubles Black's pawns and leaves Black with the more-active pieces.
26...Rg8 27.Nd5
Nxf5 is still met by …Rxf3!
The text, which gives back White's extra pawn, is the engines' choice, but maybe 27.Kh2!? offered  more hope. The engines continue 27...Kb8 28.Kh1 Ka7 29.Kh2 (they again prefer to return the pawn with Nd5) Bd6+ 30.Kh1, at which point 30...Bf4 (Komodo10's 30...f4 is less convincing) 31.Rc2 Re8 32.Rce2 Rxc3 33.Nxf5 Rxe2 34.Rxe2 Rxc4 is clearly better for Black, despite his inferior pawn-structure, but White's protected passed pawn gives practical chances.
27...Bxd5 28.cxd5 Rxd5 29.Rcd1
The engines prefer the passive 29.Rc2, but Lasker presumably thought this unlikely to be a long-term solution.
29...Rxd1 30.Rxd1 f4 31.Kh2
The engines suggest giving up a pawn with 31.g3!? fxg3 32.Kg2, one point being that ...Re8, which proves so strong in the game, is met by Nxg3, covering the e2 entry square, but Black presumably gets on with advancing on the queenside.
31...Re8 32.a4 Kc7 33.h4 Kc6 34.c4 Bb4 35.Kh3 Re1!
Rook and bishop usually work together better than rook and knight, but here lone bishop versus lone knight is an even bigger advantage as there are rival pawn-majorities, which favours the longer-ranged bishop.
36.Rxe1 Bxe1 37.Kg4 Kc5 38.Kxf4 Kxc4 39.Ke4!?
Devidé: "It is questionable whether h5, followed by g4, would have offered a better fighting chance." The engines prefer Lasker's move.
39...Bxh4 40.g3 Bd8 41.Ne3+ Kb4 42.Kd3 Kxa4 (0-1, 55 moves).