King's Indian Attack
1.Nf3 d5 2.g3 c5 3.d3!? Nc6 4.Bg2 e5 5.Nbd2 Nf6
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| There are 633 examples of this position, in which Black is effectively playing the white side of a Pirc but a tempo down, in ChessBase's 2025 Mega database |
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6.e4 d4 7.Nc4 Qc7 8.a4 Be6 9.b3 Be7 10.0-0 h6 11.Nh4 g5!? 12.Nf5 0-0-0!?
Stockfish17 and Dragon1 like this, along with 12...Bf8!? and then long castling..
13.a5 Bxf5?!
But they do not like this, preferring 13...Kb8.
14.exf5 Qd7?!
And this also seems dubious, with the engines preferring, among other moves, 14...a6 and 14...Bd6.
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| How should White proceed? |
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15.Bxc6?!
The engines prefer 15.a6 or 15.Re1.
15...Qxc6 16.Nxe5 Qd5 17.Re1?!
The engines give White the upper hand after 17.Nc4!?
17...Bd6 18.Nc4 Qxf5
Preserving the bishop with 18...Bc7!? may be better, especially as White can hardly save the f5 pawn.
19.Bd2
The engines suggest 19.a6 or 19.f4!? After the latter Black should probably play 19...Bc7 as 19...gxf4? 20.Nxd6!? Rxd6 21.Bxf4 Re6 (21...Rd7? 22.Re5 etc) 22.Rxe6 fxe6 23.Qe2 is positionally winning for White, according to the engines.
19...h5?!
Probably better is 19...Bc7 or 19...a6!?
20.a6 b6?!
This looks OK, at least at first, but with the benefit of hindsight 20...h4!? is better.
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| How can White exploit Black's last move? |
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21.Nxd6+
Not 21.Nxb6+?? axb6 22.a7 as the black king simply moves up a rank, for example to c7, leaving a8 covered.
However the engines give the spectacular 21.Bxg5!!, when 21...Qxg5?! 22.Qf3 wins, eg 22...Rd7 23.Nxd6+ Rxd6? (better is 23...Kb8, but 24.Nc4 leaves White the equivalent of more than a rook ahead, according to the engines) 24.Qb7+ Kd8 25.Qe7+ Kc8 26.Qxd6, or 22...Qd5 23.Qxf6 h4 24.Nxd6+ Qxd6 25.Qxf7. Possibly best is 21...h4, but White is a pawn up and probably has the safer king, eg 22.Bxf6 (22.f4!? may be even stronger) Qxf6 23.Qg4+ Kc7 24.Na3!? hxg3 25.Nb5+ Kb8 26.fxg3, when again the engines reckon White's advantage is worth more than a rook.
21...Rxd6 22.Re7
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| Black to play and equalise |
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22...Rd7?!
Probably better is 22...Nd7 or 22...h4, but best seems to be the engines' 22...Nd5!?, and if 23.Rxa7 then 23...Kb8, and after 24.Rb7+ (forced) Ka8 Black has full compensation for a pawn, according to the engines.
23.Qe2 h4?
Better is 23...g4, but Black's attack is too slow, eg 24.Re1 Nd5 25.Re5 Qg6 26.f3!? gxf3 27.Qxf3 Qc6 28.Re8+ Rxe8 29.Rxe8+ Rd8 30.Rxd8+ Kxd8 31.Qxf7, after which White is a pawn up and with threats.
24.Bxg5??
The right idea, but three moves late. Instead 24.Re5 gives a winning advantage, eg 24...Qh3 25.Bxg5 Ng4 26.Re8+ Rd8! 27.Rxd8+ Rxd8 28.f3!? Rg8 (28...Ne3 29.Bxd8 Kxd8 30.g4) 29.fxg4 Rxg5 30.Qe8+ Kc7 31.Qxf7+ Kd6 32.Rf1 etc.
24...Qxg5 25.Rxd7 Kxd7 26.Qf3 hxg4!? 27.fxg3
If 27.Qb7+ then 27...Kd6.
27...Qe3+ (0-1, 43 moves)
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