Author: Martin Giepmans
Date: 18:22:13 12/27/01
Go up one level in this thread
On December 27, 2001 at 11:13:40, Sune Larsson wrote:
>
> [D]8/3k2p1/4pp2/1p2PP2/1PpP2P1/8/4K3/8 w - - 0 35
>
> This position is from a game Rocha - Spraggett, 1999.
> White is worse here and there are several ways for him to
> lose this position. Hecht, in his commentaries, even thought
> that the key move is the only way for white to make the draw.
> This ending is tricky, so I'm not 100% sure that Hecht is correct.
> Anyway, white has a simple and straight forward way to secure the draw.
>
> Theme - pawn ending: One protected passer can hold his own vs two connected.
>
>
> Test: Programs with some of this knowledge should evaluate the position
> after 1.d5! as 0.00 or close to it.
>
>
>[Event "Boavista Masters"]
>[Site "Porto"]
>[Date "1999.12.31"]
>[Round "5"]
>[White "Rocha, Sergio"]
>[Black "Spraggett, Kevin"]
>[Result "1/2-1/2"]
>[ECO "C02"]
>[WhiteElo "2427"]
>[BlackElo "2521"]
>[Annotator "Hecht"]
>[SetUp "1"]
>[FEN "8/3k2p1/4pp2/1p2PP2/1PpP2P1/8/4K3/8 w - - 0 35"]
>[PlyCount "12"]
>[EventDate "1999.12.27"]
>
>35. d5 $1 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4 39. Kc2 g5 40. Kd3 Kd6 1/2-1/2
>
>Sune
My program sticks with Ke3
Is that also a draw?
SpiderChess (amd 1200, no TB)
05 00:00:00 - 0.39 E2-E3 F6xE5 D4xE5 D7-E7 E3-E4
06 00:00:00 - 0.33 E2-E3 D7-E7 F5xE6 E7xE6 E3-E4 F6xE5 D4xE5
07 00:00:00 - 0.27 E2-E3 D7-E7 E3-E4 F6xE5 D4xE5 E7-D7 F5-F6
08 00:00:00 - 0.30 E2-E3 F6xE5 D4xE5 D7-D8 E3-E4 D8-E7 E4-D4 E7-D7
09 00:00:00 - 0.01 E2-E3 F6xE5 D4xE5 D7-E7 E3-E4 E7-F7 E4-E3 C4-C3 E3-D3
10 00:00:00 0.00 E2-E3 F6xE5 D4xE5 D7-E7 E3-E4 E7-F7 E4-E3 F7-E7
11 00:00:02 0.00 E2-E3 F6xE5 D4xE5 D7-E7 E3-E4 E7-F7 E4-D4 F7-E7 D4-E4
12 00:00:06 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E4 C7-D7 E4-D4
13 00:00:12 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E4 C7-D7 E4-D4 D7-D6
14 00:00:15 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-C8 E3-E4 C8-D7
E4-D4
15 00:00:22 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-C8 E3-E4 C8-D7
E4-D4 D7-D6
16 00:00:36 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-C8 E3-D4 C8-D8
D4-E4 D8-E7 E4-D4
17 00:01:01 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-C8 E3-D4 C8-D8
D4-E4 D8-E7 E4-D4 E7-D6
18 00:01:47 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-C8 E3-D4 C8-D8
D4-E3 D8-E7 E3-E4 E7-D7 E4-D4
19 00:03:40 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-D8 E3-E4 D8-E8
E4-D4 E8-E7 D4-E4 E7-D7 E4-D4 D7-D6
20 00:07:37 - 0.42 E2-E3 D7-E7 E3-E4 G7-G6 E5xF6 E7xF6 F5xE6 F6xE6 G4-G5
E6-D7 D4-D5 D7-D6 E4-D4 D6-C7 D4-E3 C7-D8 E3-D4 D8-E7
D4-E4 E7-D7 E4-E3 D7-E8 E3-E4 E8-E7 E4-D4
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