Author: Sune Larsson
Date: 16:56:30 09/22/01
Go up one level in this thread
On September 22, 2001 at 17:20:06, Robert Hyatt wrote: >On September 22, 2001 at 11:29:27, Uri Blass wrote: > >>On September 22, 2001 at 09:57:10, Robert Hyatt wrote: >><snipped> >>>OK... let's back up a bit. >>> >>>I have an a and c pawn, and a pawn at g5. You have pawns at g6/h7. That is >>>the position in the game under discussion. Crafty was up a pawn, and had an >>>eval of +2.something, although the game was later drawn. >> >>In the game under discussion crafty was not pawn up >>It was KPPP vs KPPP >> >>Here is the relevant position from the game >> >>[D]8/4k1p1/7p/6p1/8/8/PKP4P/8 w - - 0 37 >> >>black has g7,h6,g6 and not g6 h7. >> >>Uri > > >I understand. I was simply moving things so that the position is a lot easier >to understand, to show why Crafty was happy, and why perhaps it should not have >been quite so happy. But static eval there is very difficult. And after some moves this position could happen: [D]8/8/3k4/6p1/P1P1K1pp/8/7P/8 w - - 0 1 37.Kc3 Kd6 38.Kd4 (Crafty +1.98) g4 39.c4 h5 40.a4 h4 41.Ke4 g5 see diagram Both kings are stuck - draw. Or this position: [D]8/6p1/8/2k4p/P4Kp1/2P5/7P/8 w - - 0 1 This is what Crafty chooses. 37.Kc3 Kd6 38.Kd4 (+1.98) g4 39.Ke4 (+2.01) h5 40.a4 Kc5 41.c3 (+1.46) Kc4 42.Kf4 Kc5 see diagram. Again both kings are stuck. If white plays 43.Kg5 so 43.-g6 - draw. Sune
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