Showing posts with label Kramnik. Show all posts
Showing posts with label Kramnik. Show all posts

Tuesday, 8 August 2023

World's Cleverest Fool?

THERE are eight games in ChessBase's 2023 Mega database that reach the position after 1.f3!? e5 2.g4??
All eight ended abruptly with 2...Qh4#, which is known as Fool's Mate.
There could soon be two more games in Mega with the same sequence of moves as former world champion Vladimir Kramnik has lost two games in exactly the same fashion, as is being highlighted at the English Chess Forum.
Where does that leave the game we love?

Sunday, 13 September 2020

Champion Of Champions: Challenge

VLADIMIR Kramnik won my Champion Of Champions tournament, in which the 16 classical world champions faced off in a knockout format.
'Games' were decided by choosing each player's most-popular move in any given position in ChessBase's 2020 Mega database.
There is no reason why such an event should be restricted to world champions - anyone can take part as long as there is a reasonable number of a player's games in Mega20.
I have 923 games in Mega20, so here I will be taking on the Champion Of Champions in a two-game match.

Vladimir Kramnik - Spanton
Pseudo-Chigorin
1.d4 d5 2.Nf3!?
There are 157 games with this move by Kramnik in Mega20, compared with 152 for 2.c4.
2...Nc6!?
Kramnik has not faced this move, so this is as far as we can go
The analysis engines Stockfish11 and Komodo11.01 give White an averaged advantage of +57.5, which means I have it all to do in the next game.

Spanton - Vladimir Kramnik
Spanish Four Knights Rubinstein
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Nd4
I have not faced Rubinstein's 4...Nd4 in Mega20, so again the 'game' comes to a quick conclusion
The analysis engines give me an averaged advantage of +25.5 - not bad, but not enough to overcome Kramnik's game-one advantage.
So Kramnik wins with a score of +32 - closer than I feared.

Saturday, 12 September 2020

Champion Of Champions (part 15)

HERE is the tournament bracket ahead of the final.

Round of 16               Quarter-Finals          Semi-Finals                      Final
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian
                                                                      v.....................................Botvinnik
6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik (+406.5)
13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)
                                                                                                             v...........................
3. Capablanca
v----------------------------Kramnik (+118)
14. Kramnik (+12)
                                     v................................Kramnik (+13)
5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)
                                                                       v.....................................Kramnik
7. Smyslov (+18)
v----------------------------Smyslov (+11.5)
10. Spassky
                                     v................................Smyslov
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

Botvinnik reached the final by beating Fischer, Alekhine and Tal; Kramnik reached the final by beating Capablanca, Karpov and Smyslov.
Who had the tougher route? Hard to say, but Botvinnik's margins of victory were, in general, more convincing.

Final
Game One
Mkikhail Botvinnik - Vladimir Kramnik
Nimzo-Indian
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Bd3 c5
Kramnik has played this eight times in ChessBase's 2020 Mega database, compared with five times for 5...d5.
6.a3
This is as far as we can go as Kramnik has not faced 6.a3
The analysis engines Stockfish11 and Komodo11.01 are divided over this position, with the former liking Black but the latter narrowly preferring White.
Their averaged evaluations give Kramnik a score of +25.5 - a commanding position since he has the white pieces to come.

Game Two
Vladimir Kramnik - Mikhail Botvinnik
Queen's Indian
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.0-0 0-0 7.Re1 d5 8.cxd5
As far as we can go - Botvinnik did not face 8.cxd5
The engines give White an averaged advantage of +11.
Here is the final tournament bracket.

Round of 16               Quarter-Finals          Semi-Finals                      Final
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian
                                                                      v.....................................Botvinnik
6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik (+406.5)
13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)
                                                                                                             v.............................Kramnik
3. Capablanca
v----------------------------Kramnik (+118)
14. Kramnik (+12)
                                     v................................Kramnik (+13)
5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)
                                                                       v.....................................Kramnik (+36.5)
7. Smyslov (+18)
v----------------------------Smyslov (+11.5)
10. Spassky
                                     v................................Smyslov
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

The Champion Of Champions: Vladimir Kramnik.

Friday, 11 September 2020

Champion Of Champions (part 14)

HERE is the updated tournament bracket after the first semi-final.

Round of 16               Quarter-Finals          Semi-Finals                      Final
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian
                                                                      v.....................................Botvinnik
6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik (+406.5)
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)
                                                                       v.....................................
7. Smyslov (+18)
v----------------------------Smyslov (+11.5)
10. Spassky
                                     v................................Smyslov
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

Semi-Finals
Match Two: Kramnik v Smyslov
Game One
Vladimir Kramnik - Vasily Smyslov
Bogo-Indian
1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+
There are 41 examples of Smyslov playing the Bogo-Indian in ChessBase's 2020 Mega database, compared with 40 for the Queen's Indian: 3...b6.
4.Bd2
Five examples of Kramnik playing this compared with four for 4.Nbd2.
4...a5
This is as far as we can go as Kramnik has not faced 4...a5 in Mega20
The analysis engines Stockfish11 and Komodo11.01 give White an averaged advantage of +47.5

Game Two
Vasily Smyslov - Vladimir Kramnik
Spanish Berlin
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0-0 Nxe4 5.Re1 Nd6 6.Nxe5 Be7
We have reached exactly the same position as in game one of the quarter-final Smyslov - Lasker, which had to be called here as Smyslov did not face 6...Be7
White's advantage in this position, according to the averaged evaluations of Stockfish11 and Komodo11.01, is 34.5 - not enough for Smyslov to overturn Kramnik's score in the first game of this semi-final.
Here is the updated tournament bracket.

Round of 16               Quarter-Finals          Semi-Finals                      Final
1. Steinitz
v----------------------------Carlsen
16. Carlsen (+102.5)
                                    v................................Tal
8.Tal (+8.5)
v----------------------------Tal (+79.5)
9.Petrosian
                                                                      v.....................................Botvinnik
6. Botvinnik (+66)
v----------------------------Botvinnik (+18.5)
11. Fischer
                                    v.................................Botvinnik (+406.5)
13. Kasparov
v----------------------------Alekhine
4. Alekhine (+21.5)

3. Capablanca
v----------------------------Kramnik (+118)
14. Kramnik (+12)
                                     v................................Kramnik (+13)
5. Euwe
v----------------------------Karpov
12. Karpov (+11.5)
                                                                       v.....................................Kramnik
7. Smyslov (+18)
v----------------------------Smyslov (+11.5)
10. Spassky
                                     v................................Smyslov
15. Anand
v----------------------------Lasker
2. Lasker (+50.5)

Wednesday, 2 September 2020

Champion Of Champions (part five)

HERE is the updated tournament bracket after four 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--------------------------
14. Kramnik

5. Euwe
v--------------------------
12. Karpov

7. Smyslov
v--------------------------
10. Spassky

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

Round of 16
Match Five: Capablanca v Kramnik
Game One
José Capablanca - Vladimir Kramnik
Spanish Four Knights Rubinstein
1.e4!?
This is surprising, but there are 393 of Capablanca's games with 1.e4 in ChessBase's 2020 Mega database compared with 306 for 1.d4.
1...e5 2.Nf3 Nc6
This easily beats 2...Nf6 - 253 games to 105.
3.Bb5 Nf6 4.Nc3!? Nd4
No games in Mega20 with Capablanca facing 4...Nd4
The engines Stockfish11 and Komodo11.01 give Capablanca an averaged advantage of +25.5, which should make for a tense second game.

Game Two
Vladimir Kramnik - José Capablanca
QGD Orthodox
1.d4 Nf6 2.c4 e6 3.Nf3 d5
Capablanca preferred this over 3...b6 by 25 games to 20.
4.Nc3 Nbd7 5.Bg5
Kramnik has played this and 5.cxd5 four times each, scoring 75% in both cases, but recording a much better rating performance with the text (+116 compared with +61 for 5.cxd5).
5...Be7
Kramnik has not faced 5...Be7 so this is far as we can go
The engines give Kramnik an averaged advantage of +37.5, meaning he wins the match with a score of +12.
Here is the updated tournament bracket.

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--------------------------
12. Karpov

7. Smyslov
v--------------------------
10. Spassky

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

Thursday, 6 August 2020

Champion Repertoire (part 14)

VLADIMIR Kramnik was world champion from when he beat Garry Kasparov in 2000 until he lost the title in a tournament(!) to Vishy Anand in 2007.
A repertoire based on his games emphasises positional play.
White
Open 1.d4, planning to avoid the Nimzo-Indian by 1...Nf6 2.c4 e6 3.Nf3.
Against the Queen's Gambit Declined: 3...d5 play 4.Nc3, meeting 4...Be7 with 5.Bf4 0-0 6.e3 and continuing against the main move 6...c5 with 7.dxc5 Bxc5 8.a3.
If White switches to the Semi-Slav with 4...c6 play 5.Bg5, meeting 5...h6 with 6.Bxf6 Qxf6 7.e3,  meeting 5...dxc4 with 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 hxg5 10.Bxg5 Nbd7 11.g3!? and meeting 5...Nbd7 with 6.e3, which allows the Cambridge Springs: 6...Qa5 - reply to this with 7.cxd5 Nxd5 (the only move Kramnik's opponents played in ChessBase's 2020 Mega database) 8.Qd2.
Against the Ragozin: 4...Bb4 play 5.Bg5 (Kramnik with this move scored 91%!), meeting 5...h6 with 6.Bxf6 Qxf6 7.Qb3!? If 5...Nbd7 play 6.cxd5 exd5 7.Qc2.
Against 4...dxc4 play 5.e4 Bb4 6.Bg5 c5 7.Bxc4 cxd4 8.Nxd4.
Against the Semi-Tarrasch: 4...c5 play 5.cxd5 Nxd5 (none of Kramnik's opponents tried 5...exd5) 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 0-0 11.Rd1!? If 5...cxd4 play 6.Qxd4 exd5 (meet 6...Nxd5 with 7.e4 Nxc3 8.Qxc3) 7.e4!
Against the Queen's Indian: 3...b6 play 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 9.Ne5 Nfd7 10.Nxd7 Nxd7 11.Nd2 0-0 12.0-0. If 4...Bb7 play 5.Bg2 Be7 6.0-0 0-0 7.Re1!?
Against the Bogo-Indian: 3...Bb4+ Kramnik scored 90% (four wins and a draw) with 4.Bd2 and 100% (four wins) with 4.Nbd2, so it is very difficult to give a repertoire recommendation, but the latter move has the advantage of being a lot less popular.
Against 3...c5 play 4.d5 cxd5 5.exd5 d6 6.Nc3 g6 7.Nd2!? Bg7 8.e4 0-0 9.Be2.
Against the Grünfeld: 2...g6 3.Nc3 d5 play 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Rb1 0-0 9.Be2.
Against the King's Indian: 3...Bg7 4.e4 d6 play 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.b4, meeting the mainline 9...Nh5 10.Re1 f5 11.Ng5 Nf6 12.Bf3 c6 with 13.Be3.
Against the mainline Benoni: 2...c5 3.d5 e6 play 4.Nc3 exd5 5.cxd5 6.Nf3 g6 7.Nd2!?, transposing to the line given against 1.d4 Nf6 2.c4 e6 3.Nf3 c5. Against the Czech Benoni: 3...e5 play 4.Nc3 d6 5.e4. Against the Benko Gambit: 3...b5 play 4.cxb5 a6 5.e3.
Against 1...d5 play 2.Nf3. After 2...Nf6 3.c4 transpositions to lines already covered are likely, but meet the Slav: 3...c6 4.Nc3 dxc4 with 5.a4 Bf5 6.Ne5. Against 4...a6 Kramnik equally played 5.e3 and 5.a4, but did better percentage-wise and rating-wise with the latter. Against the main reply 5...e6 he scored much better percentage-wise and rating-wise with 6.g3 rather than with 6.Bg5.
Against a delayed Queen's Gambit Accepted: 1...d5 2.Nf3 Nf6 3.c4 dxc4 play 4.e3, meeting 4...e6 with 5.Bxc4 c5 6.0-0 a6 7.Bb3!?, meeting 4...Bg4 with 5.Bxc4 e6 6.Qb3!? and meeting 4...g6 (the only other move he has faced) with 5.Bxc4 Bg7 6.0-0 0-0 7.Nc3.
Against 2...e6 play 3.c4 with a likely transposition to a line already covered.
Against the Liberated Bishop: 2...Bf5 play 3.c4 e6 4.Nc3, meeting 4...c6 with 5.Qb3 Qb6 6.c5, meeting 4...Nf6 with 5.Bg5 and meeting 4...Nc6 with either 5.Bf4 or 5.cxd5 exd5 6.Bf4.
Against 2...c5 play 3.c4, meeting 3...e6 with 4.cxd5 exd5 5.Nc3 and meeting 3...cxd4 with 4.cxd5 Nf6 5.Qxd4 Qxd5 6.Nc3 Qxd4 7.Nxd4.
Against 1...e6 Kramnik often transposed to a French Defence: 2.e4 d5 3.Nc3 but he also played 2.c4, which is an easier repertoire fit. If Black then played a delayed Dutch: 2...f5 Kramnik once played 3.g3 Nf6 4.Bg2 and once played 3.Nc3 Nf6 4.e3.
Against an immediate Dutch: 1...f5 Kramnik usually went for a kingside fianchetto, eg 2.Nf3 Nf6 3.c4 g6 (he did not face 3...e6) 4.g3.
Against 1...d6 he did best with 2.Nf3, with likely transpositions to lines already covered, and against the independent 2...Bg4 he played 3.c4.
Against 1...g6 he did best with 2.c4, meeting 2...Bg7 with 3.e4 (or 3.Nc3 and 4.e4).
Black v 1.e4
Play 1...e5 intending to meet the Spanish: 2.Nf3 Nc6 3.Bb5 with the Berlin: 3...Nf6, the main line being the Berlin Wall: 4.0-0 Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8. After 9.Nc3 Kramnik played 9...Bd7 and 9...Ke8 almost equally often but scored better percentage-wise and rating-wise with the latter. He usually met the standard 10.h3 with 10...h5.
Against 5.Re1 Nd6 6.Nxe5 Be7 7.Bf1 (the only move Kramnik faced) he usually replied 7...Nxe5 8.Rxe5 0-0, usually meeting 9.d4 with 9...Bf6 10.Re1 Re8 and usually meeting 9.Nc3 with 9...Ne8 10.Nd5 Bd6 11.Rel c6 12.Ne3 Be7 13.Nf5 d5 14.Ne7+ Kh8 15.Nxc8 Rxc8 16.d3 f5.
Against 4.d3 he usually played 4...Bc5, meeting 5.c3 with 5...0-0, usually meeting 5.0-0 with 5...d6 (but scoring much better when he played 5...Nd4) and meeting 5.Bxc6 with 5...dxc6, usually replying to 6.Nbd2 with 6...Be6.
Against a transposition to the Spanish Four Knights: 4.Nc3 he played the Rubinstein Variation: 4...Nd4. and he met 4.Qe2 with 4...Bc5.
Against the Scotch Four Knights: 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 he played 5...Bb4, and against the Scotch: 3.d4 exd4 4.Nxd4 he mostly played 4...Nf6 but scored much better percentage-wise and rating-wise with 4...Bc5. He twice faced the Scotch Gambit: 4.Bc4, both times replying 4...Bc5.
Against the Italian Game: 3.Bc4 he played 3...Bc5, usually meeting 4.c3 Nf6 5.d3 with 5...d6 6.0-0 a6. Against 5.d4 exd4 6.e5 d5 7.Bb5 Ne4 8.cxd4 he played 8...Bb6, and against 6.cxd4 Bb4+ 7.Bd2 (no games with 7.Nc3) he played 7...Nxe4!? 8.Bxb4 Nxb4 9.Bxf7+ Kxf7 10.Qb3+ Kf8!? 11.Qxb4+ Qe7.
There is only one game with the Evans Gambit: 4.b4, Kramnik replying 4...Bxb4 5.c3 Be7.
Against the Bishop's Opening: 2.Bc4 Kramnik played 2...Nf6.
Against the Vienna: 2.Nc3 Nf6 3.g3 he did slightly better with 3...d5 than with 3...Bc5. Against 3.f4 he played 3...d5 4.fxe5 Ne4 5.Nf3 Bc5!?
There are no games in Mega20 in which he faced the King's Gambit.
Black v 1.d4 and Others
Aim against 1.d4 for a Nimzo-Indian: 1...Nf6 2.c4 e6 3.Nc3 Bb4, meeting 4.Qc2 with 4...0-0 5.a3 Bxc3+ 6.Qxc3, at which point Kramnik played 6...b6 slightly more often than 6...d5, but did slightly better with the latter.
Against 4.e3 play 4...0-0, meeting 5.Bd3 with 5...c5 6.Nf3 d5 (Kramnik sometimes reversed Black's fifth and sixth moves) 7.0-0 Nc6 8.a3 Bxc3 9.bxc3 Qc7 and meeting 5.Ne2 with 5...d5 6.a3 Be7 7.cxd5 Nxd5!? (he played this uncommon move twice against one appearance for 7...exd5).
Against 4.Nf3 play 4...d5!?, meeting the most popular reply in Mega20 5.Bg5 with 5...Nbd7 6.cxd5 exd5 and meeting 5.cxd5 (the most popular reply of Kramnik's opponents) with 5...exd5 6.Bg5 Nbd7, which reaches the same position. Most games in Mega20 then continue 7.e3, which Kramnik met with 7...c5.
Against 4.f3 play 4...d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 Nxd5.
He only once faced 4.a3, replying with the mainline 4...Bxc3+ 5.bxc3 c5 6.e3 0-0 7.Bd3 Bc6 8.Ne2 b6 9.e4 Ne8.
Kramnik also only once faced 4.Bg5, replying 4...c5 5.d5 d6 6.e3 exd5 7.cxd5 Nbd7.
Against 3.Nf3 Kramnik usually switched to a Queen's Gambit Declined: 3...d5 and after 4.Nc3 made it a Semi-Slav: 4...c6.
Against 5.e3 Kramnik played 5...Nbd7, meeting 6.Bd3 with 6...dxc4 7.Bxc4 b5 8.Bd3 Bb7. He usually met 6.Qc2 with 6...Bd6, usually following up 7.Be2 0-0 8.0-0 with 8...Re8, usually following up 7.Bd3 with 7...0-0 8.0-0 dxc4 9.Bxc4, at which point he did best with 9...b5, and following up 7.b3 with 7...0-0, at which point he twice met the main move 8.Be2 with 8...b6 and once with 8...e5, and he once met 8.Bb2 with 8...e5 and once with 8...Qe7.
Against 5.Bg5 Kramnik usually played 5...h6 6.Bxf6 Qxf6 7.e3 Nd7 8.Bd3 dxc4 9.Bxc4 g6 10.0-0 Bg7, but almost as often and with similar results played the unusual 8...Qd8!? 9.0-0 Be7. If 6.Bh4 Kramnik liked to play 6...dxc4 7.e4 g5 8.Bg3 b5 9.Be2 Bb7.
Against 5.cxd5 he played 5...exd5 and against 5.g3 Nbd7 6.Bg2 he played 6...dxc4.
Against the Catalan: 4.g3 Kramnik varied his responses but did marginally best with 4...dxc4, at which point he only faced 5.Bg2. Here his favourite lines, with which he got almost identical results, were 5...Nc6 6.Qa4 Bb4+ and 5...Bb4+ 6.Bd2 a5.
Against 2.Nf3 he usually play 2...d5, with obvious transpositional possibilities to the QGD, and against the London System: 3.Bf4 he usually went for quick queenside play with ...Qb6 after either 3...c6 or 3...c5. Against the New London: 2.Bf4 he twice played 2...c5 and once played 2...g6.
Against the Trompwosky 2.Bg5 Kramnik did best with 2...d5, meeting 3.Bxf6 with 3...exf6 and meeting 3.e3 with 3...c6 or 3...c5.
Against the Veresov: 2.Nc3 d5 3.Bg5 he played 3...c6.
Kramnik's most common response to the English: 1.c4 was 1...e6, usually meeting 2.Nc3, 2.g3, 2.Nf3 and 2.d4 with 2...d5.
Against 1.Nf3 he usually played 1...d5, meeting the Réti: 2.c4 with 2...d5 (transposing to the English move-order 1.c4 e6 2.Nf3 d5) and usually meeting the King's Indian Attack: 2.g3 Nf6 3.Bg2 with 3...c6 and following up both 4.0-0 and 4.d3 with 4...Bg4.
Against 1.b3 he most often played 1...d5 2.Bb2 Nf6.
Kramnik twice faced the Bird: 1.f4, both times replying 1...d5.

Here, because I thought it might be of special interest to club players, is Kramnik taking on a very strong opponent's Liberated Bishop.
Kramnik (2790) - Boris Gelfand (2675)
Hoogovens (Wijk aan Zee) 1998
1.Nf3 d5 2.d4 Bf5
A more-in-keeping-with-the-repertoire way of reaching this position would be by reversing White's opening two moves.
3.c4 e6 4.Nc3 c6 5.Qb3
Playing on the queenside is the standard response when Black develops his light-square bishop early in a Queen's Gambit.
5...Qb6
5...Qc7 6.Bf4!? may have come as quite a shock (to spectators at least) in the 1995 Bundesliga game Kramnik (2715) - Gerald Hertneck (2595). After 6...dxc4 7.Bxc7 cxb3 8.e4 Bg6 9.a3!? the position was unclear (but 1-0, 33 moves).
6.c5 Qc7
White gets pleasant queenside pressure after 6...Qxb3 7.axb3.
7.Bf4 Qc8
Note that 6...Qc8? in the Hertneck game would have been a mistake because there is no decent answer to 7.cxd5, eg 7...exd5 8.e4! dxe4 9.Ng5 Nh6 10.Bc4 Bg6 11.Ncxe4 with a big attack, or 7...cxd5 8.Nb5 Na6 9.Rc1.
8.Nh4 Bg6 9.Nxg6 hxg6
The half-open h file is not much compensation for Black's otherwise restricted position.
10.e4 Nf6
Later games saw 10...dxe4 but White has good options after 11.Nxe4 Nf6.
11.exd5!? Nxd5 12.Nxd5 cxd5 13.Bb5+!?
Possibly improving over two previous high-level games that saw 13.Bxb8 Qxb8 14.Bb5+, when the black king did not prove overly inconvenienced at being obliged to shuffle sideways to d8 (although White did win both those games).
13...Nc6 14.0-0-0!?
The white king's position looks a little airy but Black will have trouble getting at it, and meanwhile Black has to find somewhere safe for his king.
14...Be7 15.h4 Kf8!?
My main analysis engines like this move - it is Stockfish11's top choice - but White must be better.
16.Kb1 a6 17.Ba4 Na5 18.Qf3 b6
Robert Hübner in Mega20 suggests 17...Kg8.
19.cxb6 Qb7 20.Rc1?!
Stockfish11 wants to be materialistic with 20.Bc1 while Komodo11.01 and Hübner want to go for it on the kingside with 20.h5 g5 21.h6! But given long enough the engines reverse their judgments - Komodo11.01 becomes materialistic and Stockfish11 wants to be gung ho.
20...Qxb6 21.Rc7?
The engines reckon White is still better after a move such as 21.Be5 or 21.h5.
21...Rb8?
Black is at least equal after 21...Bf6 or 21...Bd8, according to the engines.
22.Qc3 Nc4?
This looks aggressive but there is a complete answer. The engines give 22...g5 23.Be5 f6 24.Bg3 with a small edge for White.
White to play and win
*****
*****
*****
*****
*****
23.Rc6 Qxb2+
Best, but losing.
24.Qxb2 Rxb2+ 25.Ka1 Kg8
White threatened the devastating 26.Rc8+ (and 25...Rc8?? fails to 26.Bxb8).
26.Rxc4 Rxf2 27.Rc8+ Kh7 28.Rxh8+ Kxh8 29.g3
White has a bishop for two pawns. The game finished:
29...Ba3 30.Rd1 Kg8 31.Rd3 Be7 32.Bc7 g5 33.hxg5 Bxg5 34.Kb1 Be7 35.Bc2 g5 36.a4 f5 37.a5 Bf6 38.Bb6 f4 39.gxf4 gxf4 40.Rd1 1-0

Saturday, 18 April 2020

Learn From The Greats (part seven)

VLADIMIR Kramnik became the 14th officially recognised world chess champion by finishing victorious in his match against Garry Kasparov on November 2, 2000.
Two days later he accepted a challenge from me in my role as a writer for The Sun
Spanton - Kramnik
Home House (London)
English Symmetrical
1.e4 c5 2.c4 Nc6 3.Ne2 e5!?
Ruling out a Maroczy Bind by White.
4.Nbc3 d6 5.d3 g6 6.g3 Bg4!?
Trying to take immediate advantage of the early holes in White's set-up.
7.Bg2 Nd4!? 8.h3 Bd7
Not 8...Nf3+?? 9.Kf1.
If 8...Bf3, then 9.Bxf3 Nxf3+ 10.Kf1 with Kg2 to come is good for White.
Stockfish10 and Komodo10 reckon Black should, at least temporarily, give up the bishop-pair with 8...Bxe2 9.Nxe2 Nxe2 10.Qxe2, and now 10...Bh6 to try to swop off Black's bad bishop. White is probably slightly better.
9.Nxd4 cxd4 10.Nd5 Bc6?!
Black is falling dangerously behind in development. The engines reckon White is only slightly better after the natural 10...Bg7.
11.0-0 Bg7 12.f4 h5?!
White now gets a strong initiative.
13.Qf3 Qd7 14.Bd2?!
Even stronger seems to be 14.fxe5, eg 14...dxe5 15.Bg5 Bxd5 16.exd5! f6, when Stockfish10 continues 17.d6!? fxg5 18.Qxb7 Qxb7 19.Bxb7 Rb8 20.Bc6+ Kd8 21.Rf7 with a winning attack, eg 21...Bh6 22.Raf1 or 21...Rb6 22.Rd7+ Kc8 23.Rc7+ and 24.c5. Consequently, the engines prefer accepting doubled and isolated d pawns with 14...Be5, but White is much better after 15.Bf4.
14...Bxd5 15.cxd5 h4!?
This is Komodo10's second choice, but both engines prefer occupying the open file with 15...Rc8.
16.g4 exf4!?
Stockfish10 comes to marginally prefer this over the engines' initial choice of 16...Rc8.
17.Bxf4 Be5 18.Bxe5 dxe5 19.Rac1 f6?!
The engines suggest 19...Rd8 or the very ugly 19...Rh7!?, but in each case with White much better.
20.g5 Kf7?!
Another doubtful move. The engines want 20...Rh7.
21.gxf6?!
Even better is the engines' 21.Qg4!?, eg 21...Qxg4 22.hxg4 followed by Rc7(+), or 21...Rd8 22.gxf6, eg 22...Nxf6 23.Qg5 with mate to follow, one line being 23...Qe7 24.Rxf6+ Qxf6 25.Rc7+ etc.
21...Qd6?
Black had to play 21...Rc8 to contest the open file.
22.Rc2 Rf8 23.Rfc1?!
My original notes show Fritz5 thought the game is now even. While it is true that 23.Rcf2 is almost certainly stronger, Black is also in trouble after the text.
23...Nxf6 24.Rc7+ Kg8 25.Rxb7 Rh7
Not 25...Nxd5? 26.exd5! Rxf3 27.Bxf3 Qd8 28.Bg4, when White will emerge a bishop up.
26.Rc6?!
It seems stronger is 26.Rxh7 Kxh7 (or 26...Nxh7 27.Qg4) 27.Qf2.
26...Qd8 27.Rxh7 Kxh7 28.Qd1 Nh5 29.Qg4 Nf4
White is a protected pawn up and is clearly better, but Black has the superior minor piece.
30.Bf1?!
The engines prefer 30.b4, as the d3 pawn is not really threatened by the knight since g6 needs protecting.
30...Kh6?!
The engines reckon 30...a5 more-or-less equalises.
Position after 30...Kh6?!
Kramnik did not allow me to keep score during the game - he probably feared I would take a long time.
Instead, once the game was over, he wrote the moves down from memor, without using a board.
However, at this point he could not recall what came next (and I had even less of a clue), although he was able to pick up the game a few moves further along at about move 35:
White to make his 36th(?) move
As can be seen, the game has radically changed between the two diagrams. Indeed, the position is now dead-equal, according to the engines.
36.Kg1 Rxa2 37.d6?
Playing for a win, but my bishop and king are too passive for this to be a realistic attempt. The engines reckon 37.Rc8 maintains equality.
37...Kf6 38.Rc6?
38.d7? is simply met by 38...Ke7, but better was counterplay against e5 with 38.Rc5.
38...Ke6 39.Ra6 Nf4 40.b4!?
This does not help, but White is lost anyway.
40...a4 41.b5 g5 42.Rc6 Rb2 43.b6 a3 44.b7 Rxb7 45.Ra6 Rb1 46.Rxa3 Nxh3+ 47.Kg2 Nf4+ 48.Kf2 g4 0-1
Kramnik said: "You played well." (I believe those were his exact words, but, if not, he said something very similar.)
Dominic Lawson ran the following leader in the Sunday Telegraph, which at least pleased my parents (and my Editor):
VLADIMIR KRAMNIK, the new world chess champion, was pictured in The Sun newspaper yesterday, playing a game with Tim Spanton, a Sun journalist.
Mr Spanton, on his own account, began by giving Mr Kramnik an unexpected run for his money. At one point, Mr Kramnik was even heard to lament, "My position is getting worse with every move" - but that was before he comprehensively destroyed Mr Spanton's defences. Mr Kramnik, no doubt, was playing the game in every sense, including supplying a crowd-pleasing touch of hyperbole for the event.
None the less, when Britain's leading tabloid newspaper publishes a full account of a game of chess in international algebraic notation, describing the opening - correctly - as "English Symmetrical, by transposition from the Sicilian Defence", it is to be congratulated. Chess offers the greatest adversarial intellectual challenge known to mankind. Until yesterday The Sunday Telegraph was the only newspaper to have bothered to interview Kramnik about his achievement in ending the 15-year reign of Garry Kasparov.
We are delighted at The Sun's interest: there are so often lamentations about "dumbing down" - might this be the start of a process of "braining up"? Perhaps The Sun could further its relationship with Mr Kramnik by inviting him to guest-edit the newspaper for a day. We look forward to his first headline: "Bishop in Pawn Scandal".
LESSONS FROM THIS GAME
Even a world champion can be caught out in the opening if he happens to play down a line his much-weaker opponent is familiar with (I doubt if Kramnik would have played 6...Bg4!? and 7...Nd4!? if he had realised 8.h3 was a good answer). White then had an initiative, which makes it much easier to find good moves (and makes it much more likely the opponent will find bad ones). It is a shame there is no record of how the game quickly moved from much better for White to equal, but the further transition to winning for Black is an all too familiar one of a club player not knowing endgame basics.
(Next: Deep Fritz at ChessBase's Hamburg HQ)

Tuesday, 27 August 2019

Why Can't All My Opponents Play like This?

Balakrishnan Jagadeesh (1695/144) - Spanton (1881/168)
Northumbria Challengers Round 9
Irregular QP
1.Nf3 d5 2.d4 e6 3.g3 c5
Before this round, BJ had gained 46 Fide elo, so he is not the mug this game makes him seem.
4.Bg2!?
Kasparov and Kramnik have played this, but it does seem strange at first sight to allow Black a central pawn-majority.
4...cxd4
More popular are 4...Nc6 and 4...Nf6, but Kasparov has played the text.
5.Nxd4 Nc6 6.0-0 Bc5 7.Nb3 Bb6 8.Bf4?
Watch this bishop - it plays a major role in the farce that ensues.
The mainline in ChessBase's 2019 Mega database runs 8.c4 Nge7 9.cxd5 Nxd5, when Black's central pawn-majority has gone. Stockfish10 and Komodo10 reckon White has an edge.
8...e5 9.Bc1 Be6 10.Nc3 Nge7 11.Bg5? f6 12.Be3?? d4 13.Bd2
It's an easy quip to make, but a stronger move was 13.Resigns.
13...dxc3 14.Bxc3 0-0 15.Qe1 Qc7 16.a4 a5 17.Nd2 Rfd8 18.b3?! Nd4 19.Bxd4 Bxd4 20.c3?
This jettisons a pawn and allows Black to pin the white knight.
20...Bxc3 21.Rc1 Rac8 22.Qd1 Rxd2 23.Qxd2 Bxd2 0-1
My final score of +3=3-3 saw me lose 13.4 Fide elo with an ECF grading performance of c164.4.

Monday, 26 August 2019

Tiviakov Scandinavian

Spanton (1881/168) - Boris Stoyanov (1592/146)
Northumbira Challengers Round 7
Tiviakov Scandinavian
1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 Nf6 5.Nf3 g6
Most popular are 5...a6 and 5...c6, but the text has been played by Kramnik and Caruana, and is a favourite of Tiviakov's.
6.Bc4
The mainline in ChessBase's 2019 Mega database runs 6.Nb5 (this is why Black usually plays 5...a6 or 5...c6) Qb6 7.c4 c6 8.Nc3 Bg7, when my main analysis engines, Stockfish10 and Komodo10, much prefer White. Nevertheless, Kramnik and Tiviakov are among strong players who have tried this line as Black.
6...a6 7.Ne5!?
This may be new at this point, although we have transposed to a known position.
7...e6
I expected 7...Be6,  when I was leaning towards 8.Bxe6 Qxe6 9.0-0, with Re1 to come, but 8.Qf3!? also looks good.
8.Bg5
I rejected 8.Bf4 because of 8...Nh5, missing that 9.Ne4 is strong. However, the text is also good.
8...Bg7?!
This natural-looking move is almost certainly a mistake, which suggests Black's whole set-up is dodgy. Better was 8...Nbd7, and if, as in the game, 9.Qf3, Black can grab a pawn with 9...Qxd4, although White has plenty of compensation. After 8...Nbd7, the engines prefer 9.0-0, with a clear edge for White.
9.Qf3 Nbd7 10.Ne4 Qb4+?
Better was 10...Qxd4, but the forced line 11.Bxf6 Nxe5 12.Qf4 leaves White a pawn up and with a continuing attack.
11.c3 Nxe5
Or 11...Qxb2 12.0-0 with a huge attack.
12.Nxf6+ Kf8 13.dxe5 Qxc4
Black played 13...Bxf6 and resigned without waiting for White's reply in Davide di Trapiani (2090) - Sergio Garofalo (1826), Modena Championship 2012.
14.0-0-0 Ke7
Or 14...Qxa2 15.Rd8+ Ke7 16.Nd5#
15.Ng8+ 1-0