Showing posts with label Morra Gambit. Show all posts
Showing posts with label Morra Gambit. Show all posts

Thursday, 24 September 2026

Lessons From Bad Bertrich VIII

MY round-eight game, in which I was White against Horst Prüsse (2006), began as an O'Kelly Variation in the Sicilian: 1.e4 c5 2.Nf3 a6.
I did not know my opponent played 2...a6, and I had nothing prepared
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All I could recall was that 3.d4!? was considered a mistake, and that White should play a line in which ...a6 would not prove useful, eg going into an Alapin setup with 3.c3.
I cannot recall where this advice came from, but in the end I rather went against it by playing 3.c4, intending to play a Maróczy Bind, even though ...a6 in the Maróczy is a common move as, among other things, it helps prepare the break ...b5.
Imagine my surprise when I discovered, after the game, 3.d4!? is easily the commonest continuation in ChessBase's 2026 Mega database (I also found that I had played 3.d4!? last year, albeit with the special intention of switching into a Morra Gambit).
So, was the advice in my mind simply wrong, or had I misremembered altogether? Maybe not, on both counts.
For starters, the top two recommendations of Stockfish18 and Dragon1 are 3.c4 and 3.c3, although the former engine comes to like 3.g3!? the more time it is given to consider the position.
And then there are the stats to consider. 3.c4 scores 56% in Mega26, 3.c3 scores 54% and even 3.g3!? scores 52%, whereas 3.d4!? turns in a miserable 40%.
The main line in Mega26, after 3.d4!?, runs 3...cxd4 4.Nxd4 Nf6 5.Nc3, and now Black gets to play what is effectively an Accelerated Najdorf, ie 5...e5!?
Position after 5...e5!?
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The engines agree Black has already at least equalised, eg after the main move in Mega26, 6.Nf3, they reckon 6...Bb4!? starts to tip the balance in Black's favour.
So it seems the half-remembered advice I had at the back of my mind was sound after all. But it would have been nice if I had originally spent some time learning the reasons behind the advice, rather than just noting it.
LESSON: as usual in chess, knowing something is good, but knowing why it is good is much better.

Thursday, 12 February 2026

Miniatures 25

IN this occasional series I am going through my decisive games of 20 moves or fewer.

Spanton (151 BCF) - Paul Dargan (173 BCF)
British Major (Eastbourne) 1990
Morra Gambit (Delayed)
1.e4 c5 2.d4 cxd4 3.Nf3 Nc6 4.Bc4!? e6 5.0-0 Nf6 6.Qe2!?
Stockfish17.1 and Dragon1 are not keen on this, preferring 6.Re1 or 6.e5.
6...Qc7
Spanton (2015) - Kristian Schmidt (2272), Politiken Cup (Helsingør, Denmark) 2013, went 6...Nxe4!? 7.Qxe4 d5 8.Bxd5 Qxd5 9.Qxd5 exd5 10.Re1+ Be7, with Black enjoying the upper hand, according to the engines (0-1, 50 moves).
7.c3!? dxc3 8.Nxc3
How should Black proceed in this position, which occurs 484 times in ChessBase's 2026 Mega database?
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8...Ng4
Springing the Siberian Trap.
How should White respond?
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9.Nb5
Avoiding 9.h3? Nd4!
9...Qb8 10.Be3?
Possibly best is 10.h3 h5!? 11.e5!? with complicated play, eg 11...Ngxe5 12.Bf4 d6, and here the engines suggest what seems to be a novelty in 13.Rad1, claiming White has full compensation for being two pawns down.
10...a6 11.Nbd4 Nxe3 12.fxe3?!
Probably better is 12.Qxe3.
12...b5!? 13.Nxc6 dxc6 14.Bb3
The engines suggest 14.Ng5!?, albeit much preferring Black after 14...Ra7.
14...Be7 15.Ng5??
Presumably I missed that after ...
15...Bxg5 16.Qh5
... Black has ...
16...Bf6
This would have been a good point for White to resign.
17.g4 Qe5 18.Rf5!? Qxb2 19.Rff1 Qe5 20.Qh3 0-1
LESSON: backward bishop moves can be hard to spot.

Wednesday, 14 January 2026

League Chess

PLAYED on board one (of eight) for Battersea 2 against Hammersmith 3 in London League Division Three last night.

Christof Brixel (2035) - Spanton (1929)
Morra Gambit
1.e4 c5 2.d4 cxd4 3.c3 g6!?
This is fifth-most popular in ChessBase's 2026 Mega database, but scores 56% - four percentage points more than accepting the gambit.
4.cxd4 d5 5.e5 Bg7 6.Nc3 f6!?
This comes to be Stockfish17.1's top choice, narrowly ahead of Dragon1's preferred 6...Nc6. However, give the engines more time, and they start fluctuating between the two moves.
How should White respond?
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7.Nf3
The main move in Mega26 is 7.f4, but 7...Nh6!? seems a good reply, although the engines agree White retains an edge.
7...Bg4?
This leaves too many weaknesses, although it takes an apparent-novelty to exploit them.
8.Qb3!
Fabiano Caruana (2835) - Jernej Skuhala (2342), Chess.com Blitz 2020, went 8.Be2 Nc6 9.0-0 e6 10.exf6 Nxf6?! 11.Ng5!?, with at least the upper hand for White, according the engines (1-0, 27 moves), while Brandon Jacobson (2532) - Alejandro Domingo Núñez (2311), Chess.com Blitz 2022, saw 8.h3 Bxf3 9.Qxf3 e6 10.exf6 Nxf6 11.Bb5+ Nc6, when Black had equalised, according to Stockfish17.1, although Dragon1 disagrees (0-1, 26 moves).
The engines reckon the text is a major improvement, giving White a winning position.
8...Bxf3
The engines suggest 8...Qd7 or 8...Nc6.
9.Qxb7 Nd7 10.gxf3 Rb8 11.Qxd5 fxe5
For quite some time the engines fluctuate between this and 11...Nb6, but come to settle on the latter, promoting 11...Kf8!? to second choice. All three moves leave Black two pawns down.
12.Bc4 e6
Forced.
13.Qxe6+ Qe7 14.Nd5?!
'Clever', but it throws away much of White's advantage. The engines' top choice is 14.d5, but 14.Qxe7+ and 14.0-0 are also good.
14...Qxe6 15.Nc7+ Ke7 16.Nxe6 Bf6?
After 16...Rb4 17.Bb3 (17.Bg5+ Bf6; 17.Bd5 Ngf6) Rxb3 18.axb3 Kxe6, Black is only slightly worse. according to the engines.
17.d5 Nb6 18.Bb3 a5 19.Be3 a4 20.Bc5+?!
White has the upper hand after this, according to the engines, but the move helps Black by giving the king a tempo to vacate e7 for the king's knight. Better is the immediate 20.Bxb6.
20...Kf7 21.Bxb6 axb3 22.Bc7!? Ra8 23.a3 Ne7
Black is two pawns down, but the black pieces are active, and d5 is vulnerable
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24.Bd6
The engines suggest 24.0-0-0!?, when 24.Nxd5 25.Rxd5 Kxe6 splits them: equal, according to Stockfish17.1; upper hand for White, according to Dragon1.
24...Nxd5 25.Nc5 Rhd8 26.Ne4 Ke6 27.Bc5 Nf4 28.Be3 Rac8 29.0-0
Now White has connected rooks, how would you assess the position?
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White remains a pawn up, has a protected passer (albeit a long way from queening) and has a well-placed blockading knight. Black has a bad bishop, but all other black pieces (including the king) are active, the b3 pawn could become menacing, and the white kingside is weak. Equal chances, according to the engines.
29...Rc2!?
Not 29...Nd3? 30.a4! Nxb2? 31.Rfb1 Nc4 32.Rxb3, after which White has freed his position, and the a pawn is starting to become threatening.
30.Nc5+ Kf7 31.Nxb3 Rb8
The engines suggest 31...Nd5.
32.Nc5 Rbxb2 33.Rad1!?
The engines like 33.Ne4.
33...Nh3+ 34.Kg2 Nf4+ 35.Kh1
After 35.Bxf4 Rxc5! 36.Be3 Rc3 Black has completely equalised, according to Stockfish17.1, although Dragon1 reckons White is slightly better.
35...Be7 36.Nd7 Ke6 37.Rfe1 Ne2!? 38.Be4??
The game is completely equal after 38.Nb6 or 38.Rd3, according to the engines.
38...exd4 39.Rxd4 Bd6 40.Nf6
Best, but still losing, is 40.Nb6!? Rxb6 41.Re4+ Kf5 42.R1xe2 Rbb2 43.Rxc2 Rxc2.
40...Be5 0-1
The result of the match has not yet been posted.
My Battersea Season 2025-6
Date       Event  Colour  Rating  Opp's Rating  Score  Season's Perf
16/9/25   CLL       W       1936         1952             0           1552
18/9/25   CLL       W       1936         1797             =           1675
16/10/25 CLL       W       1889         2047             0           1665
23/10/25 CLL       B        1889         1823             1           1805
18/11/25  LL         W       1891         1980             =           1840
20/11/25  CLL      W       1891         1866             1            1911
25/11/25  BCC     B        1891         1817             1            1955
9/12/25    LL         W       1904         1982             1            2008
16/12/25  LL         B        1904         2046             0            1968
18/12/25  CLL      B        1904         2066             1            2018
6/1/26      CLL      W       1929         2150             =            2066
7/1/26      LL         W       1929         1971             =            2058
8/1/26      CLL      B        1929         1800?           =            2038
13/1/26    LL         B        1929         2035             1            2067                        
CLL: Central London League
LL: London League
BCC: Battersea club championship
I also have a win-by-default in the Central London League
Addendum: Battersea 2 won the match 6.5-1.5, without losing a single board.

Saturday, 12 April 2025

Bad Soden-Salmünster Round Two

FACED a Fide master on top board.

Spanton (1922) - Ulrich Nehmert (2233)
Sicilian O'Kelly/Morra Gambit
Time control: 130 minutes with a 30-second increment.
1.e4 131 c5 131 2.Nf3 131 a6!? 131 3.d4 130 cxd4 131 4.c3!? 130 dxc3 130 5.Nxc3 130 Nc6 129 6.Bc4 130 e6!? 128
Robert Fischer - Viktor Korchnoi, Buenos Aires 1960, went 6...d6 7.0-0 Nf6 8.Bg5 e6 9.Qe2 Be7 10.Rfd1 Qc7, with a slight edge for Black, according to Stockfish17 and Dragon1 (½–½, 29 moves). The text is preferred by the engines, and is the commonest continuation in ChessBase's 2025 Mega database.
7.0-0 130 Nge7 128 8.Qe2 130
This is a normal Morra move, but the engines much prefer 8.h4!?
8...Ng6 126 9.Rd1 130 Be7 116
How should White proceed?
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10.Nd5!? 128
This is the top choice of Dragon1, but Stockfish17 marginally prefers 10.a4.
10...exd5 110 11.exd5 128 0-0!? 110
If 11...Na5, which does not appear in Mega25, then 12.d6 Nxc4 13.Qxc4 (13.dxe7?! Qc7) Bf6 14.Re1+ Kf8 leaves Black a bishop up, but White has obvious compensation. Stockfish17 slightly prefers Black, but Dragon1 gives Black the upper hand.
12.dxc6 128 bxc6 110 13.Nd4!? 124
The routine developing move 13.Be3 allows 13...d5, after which it is hard to find any compensation for White being a pawn down.
13...Qc7 98 14.Nf5 122 Bc5!? 84
This is the engines' top choice. The problem with 14...Bf6 is that it gives up the d6 square, when best is 15.Rd6!, one point being 15...Be5? runs into 16.Rxg6! hxg6 17.Ne7+ Kh7 18.Qg4! Bxh2+ 19.Kh1 Qe5 20.Bg5, with mate, or a huge win of material, to come.
15.b4?! 112
Objectively better is 15.Be3, but 15...Bxe3 followed by 16...d5 is very good for Black.
15...d5 84 16.bxc5 112 Bxf5 84 17.Bd3 111
Zoran Avramović (2219) - Miloš Perunović (2384), Serbian Championship (Kragujevac) 2000, went 17.Bxa6 Qa7?! (I was more worried about 17...Rfe8, which is the engines' preference) 18.Bd3 Bxd3 19.Qxd3 Qxc5, after which White does not have enough for a pawn (0-1, 66 moves).
17...Rfe8 82 18.Qc2 110 Bxd3 80 19.Qxd3 110 Qa5 80 20.Be3 109 Re4 73
UH in the postmortem said 20...Rab8 may be better, but the engines prefer the text.
21.Rdb1 106 Rae8 70 22.h3?! 101
Probably better is 22.Rb6 d4 23.Rxa6 (23.Bxd4?? Re1+ etc), although after 23...Qd8 24.Bd2 R4e6 the engines reckon Black is winning.
22...Ne5 61 23.Qd2 98 Qxd2 61 24.Bxd2 98 Nc4 60
How would you assess this late-middlegame position?
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Black is up a protected passed pawn, and has the better minor piece, even though a bishop is normally better than a knight at cooperating with rooks. The engines agree Black is winning.
25.Be1?! 97
The more-active 25.Bc3 is probably better.
25...Na3!? 60 26.Rc1 97 Nc2!? 60 27.Rxc2 97 Rxe1+ 59 28.Rxe1 98 Rxe1+ 59 29.Kh2 98 Rb1 60
How would you assess this rook-and-pawn ending?
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Black is up a protected passer, and the white rook has little choice but to defend White's two isolanis. The engines reckon Black is the equivalent of more than a minor piece ahead.
30.Kg3 98 f6 58 31.Kf4 98 Kf7 58 32.Ke3 97 Ke6 56 33.Kd4 96 Rb4+ 53 34.Kd3 96 Kd7 51 35.Ke3 95 a5 49 36.Kd3 94 f5 49 37.f3 93 g6 47 38.Ke3 91 d4+ 46
The pawn could have been pushed earlier, but there was no hurry as White has no counterplay.
39.Kd3 87 Ke6 46 40.f4 85 Kd5 46 41.g4 85 Ra4 46 42.gxf5 85 Ra3+ 46 43.Kd2 81gaf5 46 0-1

Friday, 10 December 2021

Benidorm U2000 Games: Round Two

PLAYED on Sunday.

Spanton (1829) - Hugo Romero Nieto (1561)
Morra Gambit Declined
1.e4 c5 2.d4 cxd4 3.c3 Nf6 4.e5 Nd5 5.Nf3 Nc6 6.cxd4 e6
The analysis engines Stockfish14.1 and Komodo12.1.1 reckon Black is equal after 6...d6 7.Bc4 Nb6 8.Bb5 dxe5 9.Nxe5 Bd7.
7.Nc3 d6 8.Bd2 dxe5 9.dxe5 a6
9...Nxc3 10.Bxc3 Qxd1+ Rxd1 gives White at best a tiny edge, according to the engines.
10.a3 Be7 11.Rc1 0-0 12.Bd3
How should Black proceed?
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12...h6?
The engines like 12...Ndb4!? I thought it was probably good for White after 13.Bxh7+ Kxh7 14.axb4, but I missed that Black has 14...Qd3, when the engines evaluate the position as equal. The text weakens Black along the b1-h7 diagonal.
13.Qe2 f6
This, or 13...f5, is necessary, according to the engines, but after ...
14.exf6 Nxf6 15.0-0
... White is clearly better.
15...Bd6!?
The engines prefer 15...Nd4 or 15...e5, but much prefer White.
16.Rfd1 Bb8 17.Ne4 Ng4?!
Hoping for counterplay against the white kingside, but a probably better way to avoid exchanging knights is 17...Nd5.
18.Bc3 Qc7
How should White proceed?
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19.Nd6!?
This is the engines' second choice, but they agree 19.h3 is even stronger, the point being 19...Nge5 loses to 20.Bxe5 as the c6 knight is pinned, while 19...Nf6 20.Nxf6+ gxf6 leaves the black king horrendously weak.
19...Qe7!?
Black is also lost after 19...Qxd6 20.Bh7+ Kxh7 21.Rxd6 Bxd6 22.Qd3+ etc, and after the engines' 19...Nxf2 20.Kxf2 Qb6+ 21.Kf1 Bxd6 22.Qe4, eg 22...Rf5 23.Bc4.
20.Nxc8 Rxc8 21.Re1 Re8 22.h3 Nf6 23.Bg6 Bf4?!
Giving up the exchange instead of a pawn.
24.Bxe8 Rxe8
Or 24...Bxc1 25.Bxc6 etc.
25.Rcd1 Nd5 26.Be5 Nxe5 27.Nxe5 Qg5 28.Nf3 Qh5 29.Qe4
29.g4? Qxh3 30.Rxd5 Qxg4+ 31.Kf1 Qh3+ is a draw.
29...Kh8
Best, according to the engines, is 29...Kf7, but 30.Rxd5 Qxd5 31.Qxf4+ should win easily.
30.Rxd5 1-0

Monday, 13 September 2021

Lessons From The 4NCL

MY round-one game found me as black facing an unusual but interesting opening scheme - one I have often played myself.

Trevor J Holt (1780 ECF) - Spanton (1965 ECF/1747 Fide)
26th 4NCL Weekend Congress (Woodland Grange, Warwickshire) U2000
Morra Gambit (Delayed)
1.e4 c5 2.d4 cxd4 3.Nf3
This is how Paul Morphy generally played against the Sicilian.
3...Nc6
3...e5!? usually gets short shrift in opening books, assuming the line is discussed at all, but seems playable. It sets a little trap (4.Nxe5?? Qa5+ etc) but White should prefer 4.c3 or 4.Bc4, in each case with promising play.
4.Bc4!?
Morphy used to capture on d4. The text keeps Black guessing as to whether White will play c3 or Nxd4.
4...Nf6!? 5.Qe2
Not 5.e5?! Nxe5 6.Nxe5 Qa5+ etc.
5...d6 6.h3!?
I have had the position after 5...d6 10 times as White. Six times castled, three times I played c3 and once I tried Bg5. My score in those games was +8=1-1, and that was against opposition that was on average higher-graded. However in ChessBase's 2021 Mega database the text is more popular than all alternatives put together. The point is 6.h3!? stops the annoying pin 6...Bg4, but Morra players normally turn their noses up at such slow moves. On the other hand White is not committed to playing the Morra, and h3 is the choice of Stockfish14 and Komodo12.1.1.
6...e6 7.c3
At last committing to the Morra. White could delay further with 7.0-0, when the engines suggest a novelty, or at least a move not in Mega21, in the shape of 7...Nxe4!? After 8.Qxe4 d5 9.Bxd5 Qxd5 10.Qxd5 exd5 White will recover the lost pawn and have play against an IQP, but the engines reckon Black's bishop-pair is more than enough compensation.
7...d5!?
This also seems to be a novelty, and it is not liked by the engines, who again prefer 7...Nxe4!? 8.Qxe4 d5 9.Bxd5 Qxd5 10.Qxd5 exd5, when White also recovers his missing pawn, but again the engines like the black bishop-pair.
8.exd5 Nxd5 9.cxd4
The engines reckon White may be a tad better if the Morra theme is continued with 9.0-0!?
9...Bb4+ 10.Bd2 Nf4!
Initiating sharp play that favours Black.
11.Qe4 Nxg2+
Even better, according to the engines, is 12...Bxd2+, when their top line runs 13.Nbxd2 Nxg2+ 14.Kf1 f5 with 15...Nf4 to come.
12.Kf1 f5!?
The engines prefer 12...Bxd2 13.Kxg2 Ba5, giving Black a slight edge.
13.Qe2
This is best, and should give equality, according to the engines.
13...Bxd2
How should White proceed?
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14.Nbxd2?
Capturing while developing may look natural, but it lets Black extricate the g2 knight with tempo. Even worse is 14.Qxd2? Nh4, but 14.Kxg2 gives White plenty of compensation for the pawn after, for example, 14...Bh6 15.Rd1.
14...Nf4 15.Qe1
The engines prefer 15.Qe3, but 15...Nd5 leaves Black on top.
15...0-0
Black is temporarily two pawns up after 15...Nxd4?, but 16.Qe5 Nxf3 (forced) 17.Nxf3 is strong for White.
16.Nb3 Kh8 17.Rg1!?
Komodo12.1.1's choice, at least for a while.
17...Nxh3!?
This may look greedy, but White should not get enough play for being two pawns down.
18.Rg3 Nf4 19.Qd2 Nd5 20.Kg2 f4 21.Rg5 Qf6!?
Hoping to tempt White into winning back a pawn by capturing twice on d5. The engines prefer 21...b6, which keeps the white queen's knight out of c5, or 21...h6 22.Rh1 b6.
22.Bxd5?
Better is to continue building up with 22.Nc5 or 22.Rh1. The text helps activate the black light-square bishop, as well as giving up a bishop that could be useful for attacking Black's king, and it is not as if the pawn that goes to d5 can be captured.
22...exd5 23.Rh1
Not 23.Rxd5?? Qe6 24.Qe6 Rg5 25.Qh3+ etc.
23...Bf5 24.Rgh5 Be4 25.R1h3
This does not help, but White is busted anyway.
25...Qg6+ 26.Kh2 Bxf3!?
Black will have to give up the queen after this, but gets more than enough material in return.
27.Rxh7+ Qxh7
White equalises after 27...Kg8?? 28.Rh8+ Kf7 29.Qxf4+ etc.
28.Rxh7+ Kxh7 29.Qd3+ Be4 30.Qh3+ Kg8 31.Qe6+ Kh8 32.Qh3+ Bh7
Black has two rooks, bishop and pawn for the queen, and attacking chances.
The game finished:
33.Qh5 Rf5 34.Qe2 Rf6 35.Qb5 Be4 (threatens mate in two) 36.Kh3 Bf3 37.Kh4 Rf5 0-1

Tuesday, 25 May 2021

Calvià (part five)

Santiago Juan Mas (1975) - Spanton (1793)
Calvià U2350 Round 5
Morra Gambit Declined
1.e4 c5 2.d4 cxd4 3.c3 g6!?
Not a popular move, but it scores a very healthy 58% in ChessBase's 2021 Mega database.
4.Nf3!?
Much more popular is 4.cxd4, but the game soon transposes to similar lines.
4...Bg7 5.cxd4 d5
It is generally considered important for Black to challenge the white centre, by 5...d5 or 5...Nf6, before White has time to consolidate. However grandmasters have also played 5...d6.
6.exd5
Kasparov is among those who played the more popular 6.e5, which scores 50% in Mega21 compared with 49% for the text.
6...Nf6 7.Bb5+ Nbd7 8.Nc3 0-0 9.0-0 Nb6 10.Re1 Nbxd5 11.Bg5 Be6 12.Qd2 Rc8 13.Rac1 Nxc3!?
A committal move, but it was IM Andrew Martin's choice in a 1990 game in Guernsey and GM Maxim Matlakov's in a 2016 rapid game in Talinn, Estonia.
14.bxc3 Bd5
Position after 14...Bd5
15.Bd3!?
This apparent-novelty is quite liked by my main analysis engines Stockfish13 and Komodo12.1.1.
Gerhard Reink - Martin (2415), Guernsey 1990, continued 15.Bxf6 Bxf6 16.Ne5 Qa5, when Black is already better, according to the engines (0-1, 32 moves).
Margeir Petursson (2509) - Matlakov (2682), Keres Memorial Rapid (Talinn) 2016, saw 15.Qe3 Qa5 16.Bf1 Bxf3!? 17.Bxf6!? Bxf6 18.Qxf3 Rc7, when again Black is better, according to the engines (0-1, 26 moves).
15...Bxf3 16.gxf3 Qd7 17.Kg2 e6 18.h4 h5 19.Bh6?!
Manoeuvring to give up the bishop-pair seems strange as White will not be in much of a position to exploit Black's weak kingside dark squares.
19...Nd5 20.Bxg7 Kxg7 21.Be4 Rfd8 22.c4 Nb6 23.c5!? Nd5 24.Qb2
White's queenside pressure does not quite make up for his shattered pawn-structure, according to the engines.
24...Qe7 25.Bxd5 Rxd5 26.Re4 Rcd8
Probably not 26...f5?!, when the engines reckon 27.Re5 equalises.
27.Rce1 Kh7 28.Qa3?
An oversight the drops a pawn. The engines give 28.a4, with slightly the better game for Black.
28...b6 29.Qb3 bxc5 30.dxc5 Rxc5 31.Qb4 Rc7 32.R1e3 Qxb4 33.Rxb4 Rd2 34.Ra4 Kg7 35.a3?!
Komodo12.1.1 likes this for a while, but it is probably a mistake. Better seems to be 35.Kg3 or 35.f4.
35...Kf6?!
The engines much prefer 35...Rcc2 36.Rxa7 Rxf2+ 37.Kg3 Kf6.
36.Ree4
The engines prefer 36.Re1!?, the idea being to meet 36...Rcc2 with 37.Rf1, when it is not clear how Black makes progress except by painstaking baby steps on the kingside.
36...Rd5
Again ...Rcc2 may be better.
37.Rf4+ Ke7 38.Rfb4 Rdc5 39.f4?
This gains space but weakens the f pawn and the g4 square. The engines suggest 39.Ra6 or 39.Rb8, while still giving Black a winning advantage.
39...a5 40.Rd4 Rd7 41.Re4 Rd3 42.Re2 Kf6 43.Rb2 Rdc3 44.Rd4 Kf5 45.Rb7 f6 46.a4 R3c4 47.Rxc4 Rxc4 48.Rb5+
Or 48.Kg3 Rxf4 49.Rb5+ Ke4.
The game finished:
48...Kg4 49.Rxa5 Rxf4 50.Ra8 Kxh4 51.a5 Kg5 52.a6 Ra4 53.a7 Ra3 54.Kh2 e5 55.Kg2 Kf5 56.Kh2 e4 57.Kg2 Ra4 58.Kh2 g5 59.Kg2 Kg4 60.Re8
Barely better, according to the engines, is 60.Rf8.
60...Rxa7 61.Rxe4+ Kf5 62.Rb4 Re7 63.Ra4 Re4 64.Ra8 Kf4 65.Rh8 h4 66.Ra8 f5 67.Rh8 Re2 68.Rh7 Rb2 69.Rc7 Rb4 70.Rh7 Rb3 71.Ra7 h3+ 72.Kg1 Kf3 0-1 (Time)

Wednesday, 21 April 2021

Beat The ... Morra Gambit

IN this series I am looking at the statistically best way to play against popular opening lines.
The numbers are drawn from the 2021 edition of ChessBase's Mega database, ignoring, where possible, those results that include very few games and so are statistically insignificant.

The starting point of the Morra Gambit comes after White meets 1.e4 c5 2.d4 cxd4 with 3.c3 (Paul Morphy used to play at this point 3.Nf3 with a likely transposition to mainline Sicilians).
After 2.d4, Black's best reply statistically is indeed 2...cxd4, which scores 54%, and after 3.c3 Black scores an excellent 58% with 3...g6 but even this is beaten by the 59% Black scores with 3...Nf6, which takes us to lines covered under A in https://beauchess.blogspot.com/2021/04/beat-sicilian-alapin.html

Thursday, 16 April 2020

Learn From The Greats (part five)

WHEN Garry Kasparov visited London in April 2000 to publicise his upcoming world championship match against Vladimir Kramnik, he agreed to play me - I was a writer for The Sun - in his rooms at The Savoy.
I turned up only to find he did not have a chess set - something I could have anticipated as, after all, how many players travel with anything other than a laptop and a pocket set?
A lackey was sent out to quickly get a full-sized set, and we sat down to play.
I was not allowed to keep score. This was not Kasparov's doing - rather it was The Sun photographer who reckoned a scoresheet and pen would clutter the playing table.
Spanton - Kasparov
Savoy Hotel (London) 2000, Game 1
English Botvinnik
1.c4
Kasparov reacted to this by saying "Oh," apparently surprised at the 'sophistication' of my opening choice. This was the only time he spoke during the game, which we played at blitz speed (but without clocks).
1...e5 2.g3 Nc6 3.Bg2 g6 4.Nc3 Bg7 5.e4
Aiming for a Botvinnik set-up, as recommended in Tony Kosten's The Dynamic English, which had been published by Gambit the previous year.
5...d6 6.Nge2 h5!?
Kosten: "This move is favoured by some aggressive players." It turns out to be also Stockfish10's choice.
7.h3!?
Dubious, according to Kosten, who recommended the much-more popular 7.h4. But the text is preferred by Stockfish10.
7...Be6
Kosten warned that "White is well on the way to ending up with a bad bishop" after 7...h4 8.g4?! (Kosten's punctuation) Bh6. He added: "White does not want to place too many of his pawns on light squares, at least not unless he can exchange the king's bishop."
However, 8.g4 is the most-popular move in ChessBase's 2020 Mega database after 7...h4, and is the choice of Stockfish10 and Komodo10. Black did not reply 8...Bh6 in any of the 16 games in Mega20.
The engines strongly dislike 8...Bh6, giving 9.d4, reckoning White has the upper hand.
8.Nd5 Qd7 9.d3 Nd8!?
The idea is to expel the white knight by ...c6, without allowing the knight to exchange itself.
How should White proceed?
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10.Be3
After the game was over, Kasparov dictated the moves to me, making occasional comments. At this point in the dictation he said: "I played d4 against Nigel Short in Linares in '93, no '90. It is a better move."
In fact that game, which was indeed in 1990, went 1.c4 Nc6 2.Nc3 e5 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Be6 7.Nge2 Qd7 8.Nd5 Nce7, and now 9.d4.
Here is the position after 8...Nce7:
Kasparov - Short, Linares 1990
The position in Kasparov - Short is clearly not the same as in Spanton - Kasparov, but the pawn-structure and piece-placements are very similar. The point, I believe, is that, if Black allows it, White should seize the chance to play d4 in such a structure.
10...c6 11.Ndc3 Ne7 12.Qd2 d5 13.cxd5 cxd5 14.exd5?
Giving Black a central space advantage and leaving White with a weak d pawn. The engines reckon White is slightly better after 14.d4.
14...Nxd5 15.Nxd5?!
Kasparov: "You had to play Ne4." He added, and I cannot recall his exact words, that capturing on d5 is too weakening. I presume I wanted to avoid giving up the bishop-pair to ...Nxe3.
For what it is worth, Stockfish10 for quite some time prefers the text, but eventually agrees with Komodo10 (and Kasparov) that 15.Ne4 is better.
15...Bxd5 16.Bxd5 Qxd5 17.0-0 Nc6 18.Nc3 Qd7 19.Kg2 f5 20.Rad1?
Kasparov: "Bad. You should play Bg5, when White has chances to resist."
20...h4 21.f4?
The engines suggest giving up a pawn by 21.g4!? fxg4 22.Rg1, but clearly Black is much better.
21...hxg3 22.Kxg3 g5 0-1
Kasparov: "That was a good game."
It was also a quickly-played game - so much so that he offered me a chance (however hypothetical) for revenge, insisting I again take the white pieces.
**********
Spanton - Kasparov
Savoy Hotel (London) 2000, Game 2
Morra Gambit
1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 d6 7.0-0 Nf6 8.Qe2 Be7 9.Rd1 e5
This is one of the main lines of the Morra, with more than 1,000 examples in ChessBase's 2020 Mega database.
How should White proceed?
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10.Bg5?!
Most popular is 10.h3, which Graham Burgess treated as the main line in Winning With The Smith-Morra Gambit (Batsford 1994). However, he expressed sympathy for 10.Be3, which is recommended by Marc Esserman in Mayhem In The Morra! (Quality Chess, 2012).
Kasparov criticised my choice, saying I should have played 10.b4!?, one point being that 10...Nxb4? runs into 11.Nxe5. A game between two future grandmasters, Pavel Šimáček (2481) - Milan Pacher (2255), Česká Třebová (Czech Rep) 2007, saw 10.b4!? Bg4 11.Be3 0-0 (11...Nxb4?! 12.Rab1 and Rxb7) 12.Rab1 Rc8 13.h3 Bxf3!? 14.Qxf3, when the engines reckon White has full compensation for the pawn (1-0, 25 moves).
10...0-0!?
Burgess reckoned the problem with White's 10th move is 10...Bg4, but ...Bg4 and castling are almost equally popular in Mega20.
11.Bxf6!?
"Too early," Kasparov said after the game, but it is Stockfish10's choice.
11...Bxf6 12.Nd5?
The engines give 12.h3 (Stockfish10) or 12.Qd3 (Komodo10), in each case reckoning Black has, at best, a slight edge.
12...Bg4 13.h3 Nd4 0-1
Kasparov reckoned White has "reasonable drawing chances" after 14.Rxd4! Bxf3 15.Qxf3 exd4 16.Nxf6+ Qxf6 17.Rd1.
LESSONS FROM THESE GAMES
In both games I had decent positions out of the opening (assuming you do not regard the Morra as simply bad), but my understanding of what to do in the positions was well below my ability to memorise the moves needed to get to those positions. Both the English Botvinnik and the Sicilian Morra are quite sophisticated opening choices in that they lead to unbalanced positions in which positional understanding is very important. It therefore makes sense to either learn the openings more thoroughly, or, if time or inclinations do not permit, to play something simpler.

Monday, 13 January 2020

Marathon Battle

FACED a junior on top board for Wessex C against MK Phoenix 2 in division four of the 4NCL yesterday at the Holiday Inn, Maidenhead.
Toby Cox (1690/164) - Spanton (1854/168)
Sicilian Morra Gambit Declined
1.e4 c5 2.d4 cxd4 3.c3 g6 4.Nf3
The main line goes 4.cxd4 d5, when White usually chooses between 5.exd5 and 5.e5.
4...Bg7 5.Bc4 e6 6.Qe2!?
A very rare move. The idea, presumably, is to prevent ...d5, but it does not achieve this.
6...Ne7 7.0-0 Nbc6 8.Bg5?!
This too does not prevent ...d5, and meanwhile the bishop is a target.
8...h6
Already possible is ...d5, but putting the question to the bishop first seems sensible.
9.Bf4
On 9.Bh4, Stockfish10 and Komodo10 like 9...g5 10.Bg3 d5.
9...d5 10.exd5 Nxd5
Maybe even stronger is 10...exd5, but the text is good enough for a pleasant advantage.
11.Be5?!
Stockfish10 and Komodo10 give 11.Bxd5 Qxd5 12.Rd1, but prefer Black.
11...Nxe5 12.Nxe5 0-0
I rejected 12...Nf4 because of 13.Qe4, but I should have looked further as Black has 13...Nxg2! (13...Qh4!? may also be good), and if 14.Bb5+, then 14...Kf8. Also probably good is 12...dxc3!? 13.Bb5+ Kf8 14.Nxc3, although giving up castling rights for the sake of a pawn is double-edged.
13.cxd4 Nb6 14.Nf3
14.Rd1 Nxc4 15.Nxc4 (15.Qxc4?? Bxe5) b6 is good for Black, and if 16.Qe4, then simply 16...Rb8 and ...Bb7.
14...Nxc4 15.Qxc4
Black has the bishop-pair on a fairly open board, and White has a weak d pawn. Stockfish10 reckons Black is winning, but Komodo10's verdict of 'only' having the upper hand seems more realistic.
15...Bd7 16.Nc3 Rc8 17.Qe2 Bc6 18.Rfd1 Qa5
I rejected the engines' choice 18...Qb6 because of 19.d5, but 19...exd5 20.Nxd5 Bxd5 21.Rxd5 Rfe8 is strong for Black.
19.Rd3?!
Lining up rook and queen on the same diagonal is often unwise when the opponent has the bishop-pair.
19...b5 20.Ne4
Stockfish10's choice. Komodo10 prefers 20.d5 b4 21.dxc6 bxc3 22.bxc3 Rxc6, but with a clear advantage for Black.
20...Bxe4
This is fine for a continued advantage, but 20...b4 was consistent and good. Also natural was 20...Rfd8.
21.Qxe4 Rc2 22.Ra3 Qc7 23.Rxa7 Rc1+ 24.Rxc1 Qxc1+ 25.Qe1 Qxb2
The engines prefer 25...Rc8 on the basis that the b2 pawn cannot be saved as 26.b3 Bxd4 is hopeless for White.
26.h3 Rc8?
Forgetting that Black also has king-safety issues. Simple and good was 26...Bxd4.
27.Qe4 Qc1+ 28.Kh2 Qc6 29.Qf4 f6?
29...f5 holds as 30.Ne5 can be met by 30...Qb6 with ...g5 to follow.
How does White get a large advantage?
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30.Ne5! Qe8
30...fxe5?? 31.Qf7+ Kh8 32.Qxg7#.
31.Ng4 Qf8!?
Probably objectively better was 31...Ra8 eg 32.Nxf6+ Bxf6 33.Rxa8 Qxa8 34.Qxf6 Qe8, but White is winning.
32.Qe4 Qe8 33.Qb7 Qf8 34.Nxh6+!
The engines prefer this to 34.Nxf6+, which is completely winning for White after 34...Qxf6?35.Qxc8+ Kh7 36.Qc7, but 34...Kh8 keeps the game going.
34...Kh8 35.Ng4
35.Qd7 leaves Black almost in zugzwang. The engines also point out 35.Nf7+ Kg8 36.Qxb5.
35...Rd8 36.g3 b4
36...Rxd4 is met by 37.Qxb5.
37.Qb6
The engines reckon White can give up the d pawn by 37.Ne3!? Rxd4, when Stockfish10 continues 38.h4 f5 39.Ng2 e5 40.h5! gxh5 41.Nh4 with numerous threats to the drafty black king.
7...Qd6 38.Qb7 Qf8 39.Qb6?
This was the last chance for 39.Ne3, or some other move, as now Black gets his pawn back with an equal position.
39...Qd6 40.Qxd6 Rxd6 41.Rb7 Rxd4 42.Kg2 f5 43.Ne3 Re4 44.Kf3 Kg8 45.Ke2 Bc3 46.Rd7 Kf8 47.Kf3 Ke8 48.Rd1 Ke7
Rook and bishop usually work better together than rook and knight, but here that is balanced by the vulnerability of the b pawn.
49.Ke2 Re5 50.Rc1 Ra5 51.Rc2 g5 52.Nd1 Be5 53.Ne3 Ra8 54.Kd3 Bc3 55.Re2 Kf6 56.Kc4 Rd8
56...Rc8+ 57.Kb3 Rh8 58.Nc2 Rxh3 59.Nxb4 Be5 holds the balance more easily.
57.Nc2 Rh8?
57...Rc8+ 58.Kb3 Be5 59.Nxb4 Rc3+ 60.Ka4 f4 61.gxf4 gxf4 62.h4 is equal, according to the engines, but looks easier for White to play.
58.Nxb4 Bxb4 59.Kxb4 Rxh3?
59...Rb8+ 60.Kc3 Ra8 holds, according to the engines.
60.a4
White gets his rook behind his passed pawn, giving him excellent winning chances.
60...Rh1 61.Ra2 Rb1+ 62.Kc3 Ke5 63.a5 Kd5 64.a6 Rb8 65.a7 Ra8 66.Ra5+?
Wrong technique. The rook is ideally placed defending White's kingside while supporting his passer. Correct therefore was 66.Kb4, eg 66...Kc6, and now 67.Ra6+ as 67...Kd5, trying to attack the kingside, is by now hopeless.
How should Black respond to White's mistake?
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66...Kd6??
Poor. Black had to try 66...Ke4, when 67.Ra2 gives Black very good drawing chances with 67...e5 or 67...g4.
The engines give 67.f4 g4 (67...gxf4 68.Ra4+ Kf3 69.gxf4 and the white rook is again ideally placed, defending the kingside while supporting White's passer.) 68.Kc4 e5 (68...Kf3 69.Ra3+) 69.fxe5 (69.Rxe5+? Kf3=) f4 70.e6 fxg3 71.e7 g2 72.Ra1 Kf3 73.Kd5 Kf2 74.Kc6 g1Q 75.Rxg1 Kxg1 76.Kb7 Re8 77.a8Q Rxe7+. The engines reckon White wins with 78.Kc6, but the Nalimov endgame tablebase shows the position is drawn.
The game finished:
67.Kd4 g4 68.Ra6+ Ke7 69.Ke5 Kf7 70.Kd6 Kf6 71.Kd7 f4 72.gxf4 Kf5 73.Ra4 e5 74.fxe5 Kxe5 75.Kc7 1-0
MK Phoenix 2 won the match 4.5-1.5.

Wednesday, 16 October 2019

Six Surprising Chess Facts About Bobby Fischer (part two)

1. He had a 50% score against Damiano's Defence
2. He played the Morra Gambit
Here is this relatively little-known game.
Fischer - Viktor Korchnoi
Buenos Aires 1960
Morra Gambit
1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.c3 dxc3 5.Nxc3 Nc6 6.Bc4 d6 7.0-0 Nf6
One of many popular tabiyas in the Morra
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8.Bg5!?
Morra specialist IM Marc Esserman recommends 8.Bf4 in Mayhem In The Morra! (Quality Chess, 2012) while also covering 8.Be3 and 8.b4. In ChessBase's 2019 Mega database the commonest move is 8.Qe2, a standard Morra idea.
8...e6 9.Qe2 Be7 10.Rfd1 Qc7 11.Rac1 0-0
Karel Tille - Lubomir Kavalek, Czechoslovak championship semi-final 1958, saw 11...Qb8 with a fairly uneventful draw in 21 moves.
12.Bb3 h6 13.Bf4 e5 14.Be3 Qd8 15.Nd5 Nxd5 16.Bxd5 Bd7 17.Nd2 Nb4 18.Bb3
White has compensation for his pawn in the shape of queenside pressure and in the fact that Black's extra pawn is backward on a semi-open file. Korchnoi decides to exchange off his bad bishop.
18...Bg5 19.Bxg5 Qxg5
A double-edged alternative was 19...hxg5!?
20.Nf3 Bg4 21.Rc7
Not 21.Rxd6?? Qxc1+.
21...Qd8 22.Rxb7
Another way to get the pawn back was 22.Rxf7!? Rxf7 23.Bxf7+, and if 23...Kxf7 then 24.Qc4+ with an edge.
22...Rb8 23.Rxb8 Qxb8 24.h3 Bxf3 25.Qxf3 Nc6 26.Qd3 Nd4
Black's unchallengeable knight lets him hold the balance despite his weak d and a pawns.
27.Bc4 a5 28.b3 Qb4 29.f4 Kh7 ½–½
Stockfish10 reckons White is better in the final position, but Komodo10's verdict of equality looks closer to the mark.

Thursday, 10 October 2019

Benoni? Morra? No, Caro-Kann!

JOE Skielnik emailed re my game earlier this week in the Battersea Club Championship (https://beauchess.blogspot.com/2019/10/benoni-no-morra-gambit.html).
The game began 1.d4 c5 2.e4 cxd4 3.Nf3 Nc6 4.Bc4 Nf6 5.Qe2 d6 6.0-0 g6 7.Rd1 Bg7 8.c3 0-0 9.cxd4 d5 10.exd5 Nxd5
Position after 10...Nxd5 in Spanton (168) - Paul Stokes (158)
Joe writes: "The position at move 10 could theoretically arise from the Caro-Kann."
He gives the sequence: 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nf3 (as Joe points out, 5.Nc3 is more normal, but 5.Nf3 has been played by Karpov and Short) g6 6.cxd5 (again Nc3 is more popular, but cxd5 has been preferred by Nakamura, Karjakin and Hebden) Nxd5 7.Bc4 Bg7 8.0-0 0-0 9.Qe2 Nc6 10.Rd1
Position in the Caro-Kann after 10.Rd1
The exact same position has been reached. However, there is a small but rather important difference between the two diagrams.
In the first, the blob at the bottom-lefthand corner shows it is White to move, while in the second the blob is Black.
Joe says: "Black has gained a move by not including ...d6 before ...d5, which surely proves that the Caro-Kann is better than the Sicilian …"

Wednesday, 9 October 2019

Benoni? No, Morra Gambit!

PLAYED in the Battersea Club Championship last night.
Spanton (168) - Paul Stokes (158)
Delayed Morra Gambit Declined
1.d4 c5 2.e4 cxd4 3.Nf3 Nc6 4.Bc4 Nf6 5.Qe2
Not 5.e5? Nxe5 6.Nxe5 Qa5+ etc.
5...d6 6.0-0 g6
6...Bg4 is probably more critical, when I have tried 7.c3 and 7.Rd1.
7.Rd1 Bg7 8.c3
Finally offering the c pawn, and so making the opening a Morra Gambit by transposition from the Benoni.
8...0-0
On 8...dxc3 I planned 9.e5, although 9.Nxc3, reaching a standard Morra set-up, is also playable. After 9.e5, Stockfish10 and  Komodo10 give 9...cxb2 10.Bxb2 Nh5 11.exd6 0-0 12.Bxg7 Nxg7 13.dxe7 Qxe7 14.Qxe7 Nxe7 15.Nc3, when the engines do not believe White has enough compensation for being a pawn down.
9.cxd4 d5
Stockfish10 prefers 9...Bg4. Komodo10 for quite some time rates both moves equally, but also comes to prefer 9...Bg4.
10.exd5 Nxd5
How should White proceed?
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11.Ne5!?
I rejected 11.Nc3 because I thought Black could grab a pawn, after 11...Nb6 12.Bb3, by 12...Nxd4?? 13.Nxd4 Bxd4. But I completely misjudged the position as White has, for example, 14.Bf4, when Black cannot save his dark-square bishop.
I also seriously considered 11.Bxd5!? Qxd5 12.Nc3, with something of an initiative, but I was reluctant give up the bishop-pair, especially when it meant exchanging my better bishop (the engines reckon the position is dynamically balanced).
11...e6
The engines prefer 11...Be6. The problem with the text is that Black will have difficulties developing his light-square bishop.
12.Nxc6 bxc6 13.Nc3 Qc7
Komodo10 is happy enough with this move, but the queen will not be safe on c7 once a white rook reaches c1.
14.Be3 a5
On 14...Nxe3 I planned 15.fxe3, but the engines point out 15...c5, when the position is opening nicely for Black's bishops. So the engines prefer 15.Qxe3, with equality, according to Komodo10, but Stockfish10's assessment of an edge for Black looks nearer the mark to me.
All of which suggests White's dark-square bishop should have been developed elsewhere, eg at g5.
15.Rac1
Threatening to capture twice on d5.
15...Qe7 16.Ne4 a4?!
...Nxe3 was still a decent move for Black.
17.Bg5 Qa7?
I expected 17...f6, when White must be better.
18.Bxd5 cxd5?
Black is holding on after 18...exd5 19.Nf6+ Bxf6 20.Bxf6 Qd7, although c6 is a chronic weakness and his kingside dark squares are a major concern.
19.Nf6+ Kh8
19...Bxf6 20.Bxf6 is clearly hopeless for Black as his queen is cut off from the kingside.
20.Rc3 Ba6
The engines give 20...e5!? 21.dxe5, but with a winning advantage for White.
21.Rh3 h6 22.Qf3 Qe7 23.Bxh6+ 1-0