Author: Dann Corbit
Date: 21:19:13 07/31/01
I am testing a tool written by Les Fernandez. It takes a given chess position, and transforms it into rotated or mirrored images. For each position, the evaluation should (obviously) be identical. Also, you would think that the depth in plies reached would also be the same. Funny, but it does not always work out that way. Sometimes, the chess programs I test will even choose a different best move than the theoretically predicted one. How does your program do when analyzing these 4 positions which are "exactly the same, only completely different"? [D]8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - acd 36; acn 22646754; acs 62; bm Kb1; ce 468; id "Fine 70-XTDa.1-"; pv Kb1 Kb8 Kc2 Kb7 Kc3 Kc7 Kd3 Kb6 Ke3 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Kf7 Kg5 Kg7 Kxf5 Kf7 Kg5 Kg7 f5 Kf7 f6 Kf8 Kg4 Kg8 Kf4 Kf8 Ke4 Ke8 Kf5; [D]8/7k/4p3/2p1P2p/2P1P2P/8/8/7K w - - acd 34; acn 32237435; acs 61; bm Kg1; ce 437; id "Fine 70-XTDb.1-"; pv Kg1 Kg6 Kf2 Kg7 Kf3 Kf7 Ke3 Kg7 Kd3 Kf8 Kc3 Ke7 Kb3 Kd7 Ka4 Kc7 Kb5 Kb7 Kxc5 Kc7 Kd4 Kc6 Ke3 Kc5 Kf4 Kd4 Kg5 Kxe4 c5 Kd5 Kf6 Kxc5 Kxe6; [D]k7/8/8/p2p1p2/P2p1P2/3P4/K7/8 b - - acd 33; acn 35246855; acs 64; bm Kb8; ce 461; id "Fine 70-XTDc.1-"; pv Kb8 Kb3 Kc7 Kb2 Kc6 Kc2 Kd6 Kb2 Ke6 Kc1 Kf6 Kd2 Kg6 Ke2 Kh5 Kf3 Kh4 Kf2 Kg4 Kg2 Kxf4 Kf2 Kg4 Kg2 f4 Kf2 f3 Kf1 Kg3 Kg1 f2+ Kf1 Kf3; [D]7k/8/8/2p1p2p/2P1p2P/4P3/7K/8 b - - acd 33; acn 36006818; acs 61; bm Kg8; ce 428; id "Fine 70-XTDd.1-"; pv Kg8 Kg1 Kf7 Kg2 Kf6 Kf2 Ke6 Kg3 Kd6 Kf2 Kc6 Ke2 Kb6 Kd2 Ka5 Kc3 Ka4 Kc2 Kb4 Kb2 Kxc4 Kc2 Kb4 Kb2 c4 Kc2 c3 Kc1 Kc4;
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