Fundamentals (part 26)

Spanton (163) - Jovanka Houska (173)
Barking (London) 1995

Black has just captured on f6 - who stands better?

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The position is dead-equal, according to Stockfish10 and Komodo10, but that does not mean everything is simple.
30.f4
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30...h5?
This loses, but can you see why?
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31.h3?
Winning is 31.f5+, eg 31...gxf5 32.gxh5 when White's outside passed pawns make for an easy full point. Similarly 31...Kf7 32.fxg6+ Kxg6 33.gxh5+ Kxh5 34.Kf4 is a simple win.
The game finished uneventfully:
31...hxg4 32.hxg4 b6 33.b4 Kd6 34.Kd3 c5 35.dxc5+ bxc5 36.a4 g5 37.fxg5 fxg5 38.Kd2 Kc6 39.Kd3 Kb6 40.Ke3 d4+ 41.Kd3 dxc3 42.Kxc3 cxb4+ 43.Kxb4 a5+ 44.Kc4 Kc6 45.Kd4 Kd6 46.Ke4 Ke6 46.Kd4 ½–½