Here, White is also a pawn up and is also clearly better, but the technical task is much more difficult. With the queens on, just creating mating threats would have done it. Krush even achieved a theoretically-drawn position when White exchanged the rooks … ½-½ (71).
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.
Unity Chess Club
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.
Unity Chess Club
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.