Author: Tord Romstad
Date: 09:21:51 08/22/03
Go up one level in this thread
On August 22, 2003 at 10:17:13, Mihaly Szalai wrote:
>[D]8/3p1P2/3Pp3/2p1P2K/p1p3P1/PpP3p1/1P3pP1/6k1 w - - 0 1
>
>White wins, but...
Interesting position. The MTD(f) version of my program doesn't find the
right move even after 10 minutes, which means that I almost certainly have
a bug. The classical alpha-beta version fnds the right move in two seconds,
but needs more than two minutes to show a winning score:
1 -0.93 0.00 9 f7f8R g1g2
1 > -0.93 0.00 17 f7f8Q
1 0.51 0.00 21 f7f8Q f2f1Q
2 0.51 0.00 29 f7f8Q f2f1Q
3 0.49 0.00 87 f7f8Q f2f1Q f8f1 g1f1
4 < -0.01 0.00 366 f7f8Q f2f1Q f8f1 g1f1 h5g6 f1g2 g4g5 g2f3
4 -0.01 0.00 553 f7f8Q f2f1Q f8e7 f1g2
5 > 0.49 0.01 1005 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2f3
g6g7 f3e3
5 1.98 0.01 1825 f7f8Q g1g2 f8e7 f2f1Q e7d7
6 < 1.48 0.02 3496 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2f2
g6g7 g3g2 g7g8Q g2g1Q
6 < -0.52 0.02 4697 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2f2
g6g7 g3g2 g7g8Q g2g1Q
6 -0.80 0.03 6014 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2f2
g6g7 g3g2 g7g8R g2g1Q g8g1 f2g1
7 -0.80 0.04 9276 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h2
g6g7 g3g2 g7g8R g2g1Q g8g1 h2g1
8 -0.77 0.08 16090 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f4 f2e2
9 -0.65 0.15 26519 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f4 f2e2 f4e4
10 > -0.15 0.21 35354 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3d3
10 -0.15 0.27 45902 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3e4
11 0.00 0.56 105503 f7f8Q f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h3
g6g7 g3g2 g7g8Q g2g1Q g8g1
12 0.00 2.11 464065 f7f8Q g1h2 h5g6 f2f1Q f8f1
12 0.23 2.14 469557 f7f8R f2f1Q f8f1 g1f1
13 0.18 2.29 518051 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h2
g6g7 g3g2 g7g8Q g2g1Q g8g1 h2g1 h5g5 g1f2
g5f6 f2e3 f6f7 e3e4
14 0.25 3.31 769524 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h2
g6g7 g3g2 g7g8Q g2g1Q g8g1 h2g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3e4 e7d7 e4e5 d7e7
15 0.05 12.75 2833996 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3d2 e7d7 d2c1 d7e6 c1b2
e6d5 b2c3 d5c5
16 0.05 48.54 10008025 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3d2 e7d7 d2c1 d7e6 c1b2
e6d5 b2c3 d5c5
17 > 0.55 129.93 27096751 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3d2 e7d7 d2c1 d7e6 c1b2
e6d5 b2c3 e5e6
17 > 2.55 144.49 31123271 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3d2 e7d7 d2c1 d7e6 c1b2
d6d7 b2c3 d7d8Q
17 < 2.05 144.88 31242816 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q g2g1Q g8g1 h1g1 h5g5 g1f2
g5f6 f2e3 f6e7 e3e4 e7d7 e4e5 d7e7 e5d5
d6d7 e6e5
17 2.55 148.38 32419074 f7f8R f2f1Q f8f1 g1f1 g4g5 f1g2 g5g6 g2h1
g6g7 g3g2 g7g8Q h1h2 g8g2 h2g2 h5g5 g2f3
g5f6 f2e3 f6e7 e3e4 e7d7 e4e5 d7e7 e5d5
d6d7 e6e5
Tord
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