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| White has just captured on c5 in Siegfried Halwachs (1910) - Spanton (2034), Liechtenstein 2009. Who stands better, and by how much? |
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White has the upper hand, according to Stockfish12; a slight edge, according to Komodo11.01
36...Kd7 37.Kd5
The engines give best play as 37.Kb6 Kc8 38.b5!? axb5 39.Bc3 Nf7, when Stockfish12 reckons 40.Bb4 gives White a winning position, but Komodo11.01 replies 40...e4, with just a slight edge for White. The engines then agree that best play continues 41.Kxb5 Ne5 42.Bf8 g6 43.Bg7 Nd7 44.Kc4 Kd8, when Komodo11.01's evaluation continues at a slight edge for White, while Stockfish12 reckons White, although not winning, has the upper hand.
37...Nc6 38.f4!? Ne7+ 39.Ke4 exf4 40.exf4 Ke6 41.g4
SH offered a draw. The engines reckon the position is dead-equal.
41...f5+ 42.Kf3 g6 43.gxh5 gxh5
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44.Kg3?
The position is still equal after 44.Ke3 or 44.Ke2, according to the engines.
44...Ng6 45.Bd4 Kd5
This is also the answer to 45.Kf3. White's problem is defending f4 while at the same time preventing the black king penetrating the queenside.
46.Bc5 b5 47.Kf3
Or 47.Be3 Kc4 etc.
47...Kc4 48.Bd6 Kb3 49.Ke3 Kxa3 50.Kd4 Nxf4!? 51.Ke5
If 51.Bxf4 then 51...Kxb4 is a fairly easy win for Black. The engines give best play as something like 52.Bd2+ Kb3 53.Kc5 Kc2 54.Bg5 Kc3 55.Kb6 (55.Bf6+ Kd3) b4 56.Kxa6 b3 57.Kb6 Kc2 58.Bf6 f4 etc.
51...Nxh3 52.Kxf5 Nxf2 53.Be7 Nd3 54.Kg5 Nxb4 55.Kxh5 Kb3 56.Kg4 a5 57.Kf3 Nd5 58.Bf8 a4 59.Ke4 Kc4 0-1
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