You may also have been tempted by sacrifices on g4, but this thematic central break against White’s Maroczy formation is just fine, especially as White’s king is still lingering in the middle. Still, the lines are not at all easy in this case.
14.g5 is complicated: 14…dxe4 15.gxf6 ♘xf3+ 16.♗xf3 (16.♔f1 ♗xf6) 16… exf3 17.fxe7 ♖xe7 18.♘e4 ♗f5, winning back material.
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Karpov – Kasparov World Championship 1985 Black to play
Black’s queen bishop lacks a good square. He equalized with the bishop tour, 1 …Bg4+! 2 f3 Bh5 and … Bg6.
Play went 3 h4 0-0 4 g4 Bg6. Then on 5 Bxg6, the irregular recapture, 5 … fxg6! followed by … Rae8 is best. This favors Black because of his play along the e- and f-files.
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Alekhine – Novotny Prague 1943 White to play Should White try to exploit … b5 with 1.a4 – or play elsewhere?
White has greater winning chances with a knight shift, 1 g4! Bg6 2 Nh4!. After 2 …Nc6 he was careful to avoid 3.Nxg6? because this is another case when 3 … fxg6! helps Black.
White’s superiority was clear after 3.Nhf5! Qd8 4 Qf3 Ne8 5 h4! Bxf5 6 exf5! Rc8 7 g5 and he eventually won.
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Ehlvest – Andersson Belfort 1988 Black to play
The best move is 1 … b4 so that a White knight move allows 2 … Nd5!.