In the game, there occurred 30...Bxg5 31.Qxg5 Kg7 32.Rf5 exf3 33.Qg3 with a draw on move 40.

No better was 31.Kf2 Qc8 32.Bxe4 Qh3.

The queen comes into the attack with decisive effect.

He also loses after 32.Qxe4 Qc2+.

White can do nothing, and will be mated.

When the king is protected only by pawns, one must always watch for the typical sacrifice! And here, it works:

The threat of the rook transfer to h3 is even stronger than the traditional queen entry in these positions.

25...Rxb3 26.Rh3 Kf8 27.Nh7+ Kg8 28.Nf6++–.

Having drawn the knight to g8, White changes the direction of the attack.

The attack on the dark squares decides.