Author: Paul
Date: 13:23:47 10/06/01
Go up one level in this thread
On October 06, 2001 at 05:07:58, Tim Foden wrote: >On October 05, 2001 at 16:02:14, Paul wrote: > >>On October 05, 2001 at 12:59:56, leonid wrote: >> >>>Today, after good explantion of how it must be done, I installed Chest (Heiner's >>>mate solver). It do the wonders on brute force search. I went to see some >>>positions that otherwise will be too slow for me to solve. It could be that you >>>can help me with one position. Your computer and hash could make solution more >>>speedy. Mine is Celeron 600Mhz, 64M. This position is actually one from three >>>similar positions one of which went to Web. This last was left as less >>>accessible. Just say me how far you went, or what solution you found. >>> >>>[D]kq4BK/pq4QQ/2qqnP2/1NnqQnN1/2QBqB2/5r2/RQ4qr/RQ4bb w - - >>> >>>Thanks, >>>Leonid. >> >>For now here's what Pretz found: >> >>00:40 WM12 12 Rxa7+ Q8xa7 Rxa7+ Kb8 Ra8+ Kxa8 Q1a1+ Qca6 Qxa6+ Nxa6 Qc8+ Qdb8 >>Qexb8+ Nxb8 Nc7+ Nxc7 Qxb8+ Qxb8 Qxb8+ Kxb8 Qxc7+ Ka8 Qb8# >> >>A mate in 12 in 40 seconds. > >Pretz did very well to find a mate in 40 seconds! Green Light took over 6 >hours! Oops! Now I'm worried ... usually you're pretty fast also! When I posted my solution yesterday, Leonid said he'd found a mate in 13, so I was a bit worried then too. Checked my solution with hash switch off, and got the same result in about 5 minutes, so I was pretty sure my mate was correct. Now I'm in doubt again ... naah, I'm no lumberjack ... but I'm ok! ;) > 10 20:53 ++ 671083k Qxb7+ (a=21.81 b=22.61 e=22.61) > 10 39:20 +29.914 1392m Qxb7+ Qbxb7 Rxa7+ Kb8 Ra8+ Qxa8 Nxd6+ Qxb2 Qxb2+ > Rb3 Rxa8+ Qxa8 Qbxb3+ Qab7 Ndxe4+ Qxe5 Bfxe5+ Nc7 > Bxc7+ Ka8 Qxb7+ Kxb7 Nxc5+ Ka8 Bxh2 Bxd4 Qxf5 > 10 6:04:59 +Mate12 13318m Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+ > Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8 > Qxe8+ Qd8 Qc6+ Qc7 Qxc7# > 10 6:24:27 +Mate12 14263m Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+ > Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8 > Qxe8+ Qd8 Qc6+ Qc7 Qxc7# > 11 8:12:18 +Mate12 19413m Nc7+ Qcxc7 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Qdxb7 Qxb7+ > Qexb7 Qxb7+ Kxb7 Qxc7+ Nxc7 Qb5+ Kc8 Qee8+ Nxe8 > Qxe8+ Qd8 Qc6+ Qc7 Qxc7# > 11 10:00:11 1/73 Rxa7+ >exit > >Cheers, Tim. I see you went on to find a shorter mate ... Chest just finished searching for a mate in 11 ... wasn't there! It took 6h45m. Thanks again for helping with my hash-mate-bug, Paul
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