Author: Paul
Date: 09:05:46 11/15/01
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On November 15, 2001 at 11:45:39, leonid wrote: >On November 15, 2001 at 09:44:55, Paul wrote: > >>On November 15, 2001 at 09:09:08, leonid wrote: >> >>>[D]2nkN3/2nqN3/2rrbb2/RBqQQqQQ/RBqNPqPQ/2qpqp2/3B4/3K4 w - - >>> >>>Please indicate your result. >>> >>>Thanks, >>>Leonid. >> >>Hi Leonid, > >Hi! > >>Haha! .. that was a surprise when I saw what Pretz came up with: >> >>1. Nexc6+ Qcxc6 2. Qgxf6+ Qxf6 3. Qexf6+ Qxf6 4. Qxf6+ Qe7 5. Qxe7+ Nxe7 6. >>Nxe6+ Nxe6 7. Ra8+ Nc8 8. Rxc8+ Kxc8 9. Nxd6+ Kd8 10. Ra8+ Qxa8 11. Qxa8+ Qc8 >>12. Qe8+ Kc7 13. Qexc8+ Kb6 14. Qa5# >> >>So a mate in 14! I think I must have a bug ... > >I don't think so. It is mate in 13. Verified it 12 moves deep by brute force to >be sure. Easy branching factor. Found mate in 13 by selective. Your, probably, >went just one move deper to find its mate. Good result. Just after I posted my message mine also found a mate in 13 ... I was just too quick, but I had to laugh out loud because I know you don't post mates over 13 moves deep! I thought maybe you had changed your solver. >I see that you have almost no competition here. Your selective look like to be >very effective. I still hope that somebody will come with Chess Master solution >to see better your and mine position. > >What was your time here? 07:28 WM13 13 Nexc6+ Qcxc6 Qgxf6+ Qxf6 Qexf6+ Qxf6 Qxf6+ Ne7 Ra8+ Nxa8 Rxa8+ Qxa8 Qxa8+ Qcc8 Ba5+ Qcc7 Bxc7+ Qxc7 Nxe6+ Rxe6 Qhd5+ Rd6 Qfxd6+ Qxd6 Qxd6# So no bug, mine just took the long way home first ... >Mine by brute force took 1 hour and 50 min for 12 moves to say "No". Selective >in 13, took 9 seconds. That's pretty fast ... :) >Cheers, >Leonid. Paul
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