Author: Uri Blass
Date: 12:26:40 04/26/03
Go up one level in this thread
On April 26, 2003 at 14:27:34, John Merlino wrote: >On April 26, 2003 at 07:57:49, leonid wrote: > >>Hi, >> >>And how about solving something easy, like this: >> >>[D]nqrkqqqn/4q3/1RPNQNP1/1Q4Q1/1Q4B1/pNqrqpQ1/1b2R1P1/1b3KB1 w - - >> >>Leonid. > >Chessmaster 9000, on a humble P3-733, announces Mate in 12 in just over one >minute. After a little less than two minutes, it updates to Mate in 11: > >Time Depth Score Positions Moves >0:03 1/3 -2.57 148079 1.Qxc8+ Qxc8 2.Nb7+ Qexb7 3.Nxg8+ > Qxg5 4.Qxg5+ Qcf6 5.c7+ Qbxc7 6.Qxf6+ > Bxf6 7.Rxe8+ Qxe8 8.Bxc8 Kxc8 >0:12 1/4 -1.96 644684 1.Qxc8+ Qxc8 2.Nb7+ Qexb7 3.Nxg8+ > Qe8e7 4.c7+ Q3xc7 5.Rd6+ Q8d7 6.Rxd7+ > Qxd7 7.Qxd7+ Rxd7 8.Qbxe7+ Qexe7 > 9.Rxe7 Qxb3 >1:16 1/5 Mate12 4001027 1.Qxc8+ Qxc8 2.Nb7+ Qexb7 3.Nd5+ > Qxg5 4.c7+ Qbxc7 5.Qgd6+ Qfxd6 > 6.Rxe8+ Qxe8 7.Rxd6+ Qc8d7 8.Rxd7+ > Qcxd7 9.Qxd7+ Qxd7 10.Qf8+ Qe8 > 11.Qd6+ Qd7 12.Qxd7# >1:54 1/6 Mate11 6445400 1.Qxc8+ Qxc8 2.Nb7+ Qexb7 3.Nd5+ > Qxg5 4.c7+ Qbxc7 5.Qxc7+ Q3xc7 > 6.Rxe8+ Qxe8 7.Rd6+ Qed7 8.Rxd7+ > Q8xd7 9.Qxd7+ Qxd7 10.Qb8+ Qc8 > 11.Qxc8# > >jm Latest Movei can also see mate in 11 but needs almost 30 minutes on A1000 Note that c7+ is an interesting option and movei evaluates it as giving white a positional advantage before finding the mate but I do not trust movei's evaluation and maybe humans can evaluate better if c7+ gives a positional advantage;_( analyze 1 -623 109 132698 c6c7 a8c7 e6e7 f8e7 e2e3 c7b5 e3e7 c3b4 e7e8 2 -605 153 189240 c6c7 a8c7 b5e8 c7e8 e6e7 f8e7 e2e3 c3b4 e3e7 f3g2 g3g2 2 -605 226 285339 c6c7 a8c7 b5e8 c7e8 e6e7 f8e7 e2e3 c3b4 e3e7 f3g2 g3g2 3 -938 791 990328 c6c7 a8c7 b5e8 c7e8 e6e7 e3e7 e2e7 f3g2 g3g2 c3b4 b6b4 b8b4 g 4c8 f8e7 3 -937 817 1022472 e2e3 3 -908 819 1024572 e2e3 3 -580 889 1107151 e2e3 g8e6 c6c7 a8c7 b5e8 c7e8 e3e6 c3b4 e6e7 f3g2 g3g2 3 -579 926 1153875 e6c8 3 -550 931 1159726 e6c8 3 -363 970 1210371 e6c8 b8c8 d6b7 e7b7 f6g8 e3e7 b4e7 b7e7 e2e7 f3g2 f1e2 d3g3 e7e8 3 -363 1297 1597502 e6c8 b8c8 d6b7 e7b7 f6g8 e3e7 b4e7 b7e7 e2e7 f3g2 f1e2 d3g3 e7e8 4 -540 1750 2196046 e6c8 b8c8 d6b7 e7b7 f6g8 e8e7 c6c7 b7c7 g3c7 a8c7 e2e3 d3d1 f1f2 f3g2 f2g2 e7g5 b4f8 4 -540 3303 4190699 e6c8 b8c8 d6b7 e7b7 f6g8 e8e7 c6c7 b7c7 g3c7 a8c7 e2e3 d3d1 f1f2 f3g2 f2g2 e7g5 b4f8 5 -324 5256 6923421 e6c8 b8c8 d6b7 e7b7 f6g8 f8e7 c6c7 c3c7 b5e8 d8e8 g5e7 c7e7 b4e7 b7e7 e2e3 d3d1 f1f2 c8c2 f2f3 e7e3 g1e3 a8b6 5 -323 11938 16387947 d6f7 5 -294 12139 16654039 d6f7 5 -269 18431 25395254 d6f7 g8f7 b5d5 e8d7 e6d7 e7d7 f6d7 e3g5 d5g5 c3f6 g5f6 b2 f6 g6f7 f3e2 g4e2 f8b4 b6b8 c8b8 e2d3 b1d3 5 -269 18779 25844563 d6f7 g8f7 b5d5 e8d7 e6d7 e7d7 f6d7 e3g5 d5g5 c3f6 g5f6 b2 f6 g6f7 f3e2 g4e2 f8b4 b6b8 c8b8 e2d3 b1d3 6 -239 28108 40250893 d6f7 6 -238 42329 62860472 d6b7 6 -209 43315 64204362 d6b7 6 -15 54271 82191682 d6b7 b8b7 c6c7 c8c7 b5e8 f8e8 b4e7 c7e7 g3b8 b7b8 b6b8 d8c 7 g1h2 c3e5 f6e8 e7e8 h2e5 e3e5 e2e5 e8e6 b8g8 e6e5 6 -14 61251 92821468 c6c7 6 15 65267 99352692 c6c7 6 178 72654 111528696 c6c7 c3c7 d6b7 b8b7 b6d6 d3d6 b4d6 c7d7 b5d7 b7d7 g5a5 a8 b6 a5b6 e3b6 g1b6 c8c7 b6c7 d8c8 e6d7 e8d7 g4d7 6 178 74093 113682234 c6c7 c3c7 d6b7 b8b7 b6d6 d3d6 b4d6 c7d7 b5d7 b7d7 g5a5 a8 b6 a5b6 e3b6 g1b6 c8c7 b6c7 d8c8 e6d7 e8d7 g4d7 7 42 153494 251407458 c6c7 c3c7 d6b7 c7b7 b5e8 f8e8 b6d6 d3d6 g3d6 b8d6 b4d6 b7 d7 d6e7 e8e7 e6g8 d8c7 g8c4 c7d8 g5a5 a8b6 c4g8 e7e8 e2e3 e8g8 f6d7 f3g2 f1g2 7 43 165295 271172068 e6c8 7 72 165426 271351227 e6c8 7 9979 171723 283856837 e6c8 b8c8 d6b7 e7b7 f6d5 e3g5 e2e8 f8e8 c6c7 b7c7 g3c7 c3c7 b6d6 e8d7 d6d7 c8d7 b5d7 c7d7 b4b8 d7c8 7 9979 208703 360283871 e6c8 b8c8 d6b7 e7b7 f6d5 e3g5 e2e8 f8e8 c6c7 b7c7 g3c7 c3c7 b6d6 e8d7 d6d7 c8d7 b5d7 c7d7 b4b8 d7c8 Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.