Author: Dann Corbit
Date: 09:44:15 04/24/01
Go up one level in this thread
On April 24, 2001 at 12:39:48, James T. Walker wrote: >On April 24, 2001 at 11:22:12, leonid wrote: > >>Hi! >> >>Sometime we would like to solve one mate that look like heavy but is in reality >>short and easy. The next one is just one of this nature. >> >>[D]4k3/1Q5Q/2q2q2/1qnqqnq1/1Qqbbq1Q/3NBN2/1Q1NBN1Q/1r1RKR1r b - - >> >>Please indicate your result. >> >>Thanks, >>Leonid. > >Here is Gambit Tiger 2.0 running in the background on Athlon 900. > >00:00:00.4 27.10 4 108123 Nxd3+ Nxd3 Rxd1+ Bxd1 Qxe3+ Be2 Qxh4+ Q2xh4 Rxf1+ >00:00:00.8 26.88 4 181424 Nxd3+ Nxd3 Rxd1+ Bxd1 Qxe3+ Be2 Qxh4+ Q2xh4 Qxh4+ Nxh4 >Rxf1+ Kxf1 Qbxb7 >00:00:03.5 27.78 5 819821 Nxd3+ >00:00:05.1 27.80 5 1277486 Nxd3+ Nxd3 Rxd1+ Bxd1 Qxe3+ Be2 Qxh4+ Q7xh4 Rxh2 Nxc4 >Qbxb7 Qxb7 Qxb7 >00:00:11.3 28.70 6 2541853 Nxd3+ >00:00:18.1 30.38 6 4257057 Nxd3+ Nxd3 Rxd1+ Kxd1 Nxe3+ Ke1 Qgxh4+ Q7xh4 Q6xh4+ >Nxh4 Qg3+ Qf2 Qxf2+ Kxf2 >00:00:34.9 31.28 7 7808978 Nxd3+ >00:00:39.5 41.49 7 9317928 Nxd3+ Nxd3 Rxd1+ Kxd1 Nxe3+ Ke1 Qgxh4+ Q7xh4 Q6xh4+ >Nxh4 Qg3+ Qf2 Qxf2+ Kxf2 >00:00:44.1 42.39 8 10939333 Nxd3+ >00:01:22.6 Mate in 6 8 23785457 Nxd3+ Nxd3 Qgxh4+ Q7xh4 Q6xh4+ Nxh4 Qg3+ Bf2 >Bxf2+ Qxf2 Qxf2+ Kxf2 Qg3# I think probably mate in 6 is wrong. I have never seen chest make a mistake. Chess Tiger may not try every foolish escape route to avoid mate in 6 (e.g. throw away all of your material just to stay alive longer). Chest can write the refutation table, but with 6-7 moves (depending on who you ask) it may take quite a bit of space to write it.
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