<17...Bh4>! The logical sequence to black's attack. If 17...g5, then 18.Bg5 Bg5 19.Qd5! or even Qd6

<21...Qh1> Or 21...Bh3 22.Ke2 Bg4 23.Ke3! Qh6 (Not better is 23...Qg3 24.fg Nc4 25.Kf4!) 24.f4 Nc4 25.Kf2 Na5 26.Qg4 etc

<23...Nf3>! A critical moment

<24.Kf2> With the provocatice 24.Rf1!? instead, white would perhaps have better perspectives of keeping the material advantage with a dominating position: a) 24...Nd4 25.Kf2 Nc6 26.Ra1 0-0 27.Rg1 etc
b) 24...Ne5 25.Ke1 Bg4 (best - if 25...0-0, then 26.Bd1!) 26.Bf4 f6 27.Be5 fe 28.Rf5!! c) 24...Nh2 25.Kf2 Nf1 26.Qb8 0-0 27.Qf4!

<25...Qh1> Here and in the next move black should play, elegantly, castles. For instance: 25...0-0! 26.Qb8?? Qh4 with a quick victory. After other move, black will play, say, R to b6 - carrying wood to the attack with his own K in safety

<26...Qc1>? The last opportunity for castle pass...

<27...Kd8> Slightly better was 27...Kd7

to be continued...

<29...Qc2>?

<32.Ke2>!! A pleasant final touch

<33.Ra4> The rest is kindergarten play...}