Author: Vincent Diepeveen
Date: 14:43:32 05/29/01
Go up one level in this thread
On May 29, 2001 at 14:21:13, Peter Fendrich wrote: Oh well DIEP knows. +2.4 at 1 ply. At 10 ply it sees Rxh7 wins here. Analysis mode is on Process 1: engineflags=0 msk=1 process 0: engineflags = 0 denktime=10000000 maxtime=10000000 00:00 0 0 16 (0) 1 -2.661 Rh2xh7 00:00 0 0 18 (0) 1 -0.096 Bc1-d2 00:00 0 0 19 (0) 1 2.244 Bc1-f4 00:00 0 0 20 (0) 1 2.338 Bc1-h6 00:00 0 0 30 (0) 1 2.424 Qg4-h3 00:00 0 0 102 (0) 2 2.059 Qg4-h3 h7-h5 ++ c1-h6 00:00 0 0 180 (0) 2 2.330 Bc1-h6 Rc8-c7 ++ g1-f1 00:00 0 0 324 (0) 2 2.389 Kg1-f1 Rc8-c7 00:00 0 0 511 (0) 3 2.813 Kg1-f1 Rc8-c7 Bc1-h6 00:00 0 0 2024 (109) 4 2.676 Kg1-f1 Rc8-c4 Bc1-g5 h7-h5 00:00 0 0 4805 (612) 5 2.862 Kg1-f1 Rc8-c7 Bc1-g5 h7-h5 Qg4-f3 00:00 0 0 20743 (2178) 6 2.801 Kg1-f1 Rc8-c7 Bc1-f4 Rc7-a7 Qg4-h4 h7-h5 ++ g4-g5 00:01 0 0 48069 (4983) 6 3.200 Qg4-g5 Rc8-c7 Qg5-h6 Bh8xf6 e5xf6 Rc7-a7 00:02 0 0 111010 (27730) 7 3.046 Qg4-g5 b5-b4 a3xb4 Bh8-g7 f6xg7 Qf7-c7 00:03 0 0 159921 (27826) 8 3.046 Qg4-g5 b5-b4 a3xb4 Bh8-g7 f6xg7 Qf7-c7 ++ g4-f4 00:06 0 0 355823 (49857) 8 3.255 Qg4-f4 b5-b4 a3xb4 a4-a3 b2xa3 Rc8xc3 Qf4-h6 Rb 3-b1 Rf2-f1 Rc3-d3 ++ g4-h4 00:09 0 0 608418 (122359) 8 3.331 Qg4-h4 Rc8-c7 Qh4-h6 Qf7-f8 Qh6xf8 Kg8xf8 Bc1- h6 Kf8-g8 Kg1-f1 Rc7-a7 Bh6-g5 00:11 0 0 753139 (131981) 9 3.251 Qg4-h4 Rc8-c7 Qh4-h6 Qf7-f8 Kg1-f1 Qf8xh6 Bc1x h6 Rc7-a7 Rf2-g2 Ra7-c7 00:19 0 0 1420756 (225721) 10 3.251 Qg4-h4 Rc8-c7 Qh4-h6 Qf7-f8 Kg1-f1 Qf8xh6 Bc 1xh6 Rc7-a7 Rf2-g2 Ra7-c7 ++ h2-h7 00:26 0 0 1973111 (340336) 10 3.816 Rh2xh7 Kg8xh7 Qg4-h4 Kh7-g8 Rf2-h2 Bh8xf6 e5 xf6 Kg8-f8 Qh4-h8 Qf7-g8 f6-f7 Qg8xh8 Rh2xh8 Kf8xf7 Rh8xc8 g6-g5 Kg1-f2 Kf7-f6 00:30 0 0 2208785 (358380) 11 3.816 Rh2xh7 Kg8xh7 Qg4-h4 Kh7-g8 Rf2-h2 Bh8xf6 e5 xf6 Kg8-f8 Qh4-h8 Qf7-g8 f6-f7 Qg8xh8 Rh2xh8 Kf8xf7 Rh8xc8 g6-g5 Kg1-f2 Kf7-f6 00:43 0 0 3279682 (440907) 12 4.286 Rh2xh7 Kg8xh7 Qg4-h3 Kh7-g8 Rf2-h2 Bh8xf6 e5 xf6 Kg8-f8 Qh3-h8 Qf7-g8 Rh2-h7 g6-g5 f6-f7 Qg8xh8 Rh7xh8 Kf8xf7 Rh8xc8 g5-g4 Kg 1-f2 Kf7-f6 Rc8-g8 quit Waiting for other processes to end Proces 1 quitted >This position appeared in an ICC game: Guitje - TerraPi > >[D]2r3kb/5q1p/4pPp1/1p1pP3/p2P2Q1/PrP5/1P3R1R/2B3K1 w - - 0 42 > >the last move from Terra was 41... b5 >Some moves earlier when white made g6, Terra decided to move the bishop from g7 >to h8. >Both Rb3 and Bh8 are locked in and Terra is absolutely unaware of the >hopeless situation. Yes, Terra lost... > >I see two different but connected problems for computer programs here: > - the closed position itself > - the two blocked pieces. > >How do you solve/avoid positions like this? Terra has about equal eval for this >position. >It is of course possible to punish pawn chains like this in order to avoid >closed positions but is that really a solution and how to deal with blocked >positions? > >//Peter
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