Author: Vincent Diepeveen
Date: 14:53:22 12/27/00
Go up one level in this thread
On December 27, 2000 at 03:57:59, Bernhard Bauer wrote: >On December 27, 2000 at 03:03:26, Tania Devora wrote: > >> >> >> >>The combination for find a Mate always are beautiful, I was trying to find very >>difficults Checkmates for the computer programs. I will like to know what is >>the most beautiful Mate or the most Hard Mate to find for the computer programs! >> >> >>I think that Chessmaster engine is wonderful finding very difficult Mates. >>I dont know why, But, I see one that Chessmaster look in 1 sec! And Fritz never >>find it. >> >>In resume, what is the best program finding Mate problems and why? >> >> >>Thanks to all! >> >>Tanya. > >The following position may not be the most difficult position but you may try >it with your favorite chess program. >[D]n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w >Kind regards >Bernhard Note i had nullmove turned on when trying to solve this mother. I remember in 1995 diep had nullmove problems with this one. This time it seems it has other problems. I've been toying with hashtable recently so i guess there is a bug as it says it's a mate in 8 where i had stored it in 1995 as bc7_m12 so i bet i then thought it was a mate in 12 :) Analysis mode is on Process 1: engineflags=0 msk=1 process 0: engineflags = 0 denktime=10000000 maxtime=10000000 00:00 15 (0) 1 3.01 Qc8xa8 h7xg6 ++ g6-h7 00:00 37 (0) 1 5.01 g6xh7 Kg8-h8 Qc8xa8 Qe8-e6 Kf6-g5 Kh8xh7 00:00 252 (0) 2 5.01 g6xh7 Kg8-h8 Qc8xa8 Qe8-e6 Kf6-g5 Kh8xh7 00:00 1003 (0) 3 5.01 g6xh7 Kg8-h8 Qc8xa8 Qe8-e6 Kf6-g5 Kh8xh7 00:00 2383 (0) 4 5.01 g6xh7 Kg8-h8 Qc8xa8 Qe8-e6 Kf6-g5 Kh8xh7 00:00 8232 (1061) 5 5.03 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Qe6-e5 Kg5-g4 Qe5-d4 Kg4-h3 Kh8xh7 00:01 40758 (8115) 6 5.02 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 a5-a6 Qe6-e5 Kg5-h4 Qe5-b5 00:02 85919 (8430) 7 5.02 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 a5-a6 Qe6-e5 Kg5-h4 Qe5-d4 Kh4-h3 Qd4-a1 00:03 207885 (11936) 8 5.02 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 a5-a6 Qe6- e5 Kg5-g4 f7-f5 Kg4-g5 f5-f4 Kg5-g4 Kh7-g7 00:08 561362 (62564) 9 4.94 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 Kg5-f4 Qe6 -d6 Kf4-e4 Qd6-e6 Ke4-d4 Kh7-g7 Qa8-d5 Qe6-a6 00:21 1654247 (134718) 10 5.01 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 Qa8-f3 Qe6-h6 Kg5-g4 Qh6-g7 Bd8-g5 Qg7-d4 Kg4-h5 Kh7-g8 Qf3-a8 Kg8-g7 01:23 6947107 (1744651) 11 5.17 g6xh7 Kg8-h8 Qc8xa8s Qe8-e6 Kf6-g5 Kh8xh7 Qa8-f3 Qe6-h6 Kg5-g4 Qh6-g7 Bd8-g5 Qg7-d4 Kg4-h5 Qd4-c4 Qf3-f4 Qc4-d5 a5-a6 Qd5-d1 Qf4 -g4 Qd1-h1 Bg5-h4 ++ d8-c7 01:53 10211382 (2710069) 11 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 01:54 10321023 (2710712) 12 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 02:02 11147967 (2714299) 13 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 02:15 12546257 (2719803) 14 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 02:37 14779761 (2732360) 15 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 03:08 17750307 (2754037) 16 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6 03:48 21525026 (2755141) 17 MATE08 Bd8-c7 Qe8xc8s g6xf7 Kg8-h8 Bc7-e5s Qc8-c5s B e5-a1 Na8-c7s a5-a6 Qc5-c3 Ba1xc3 Nc7-d5 Kf6-g5 Nd5-f6 Bc3xf6
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