Author: Heiner Marxen
Date: 09:23:35 02/11/01
Go up one level in this thread
On February 11, 2001 at 08:19:40, Tim Foden wrote: >On February 11, 2001 at 07:41:00, leonid wrote: > >>Hi! >> >>If you like to solve a mate, you can try the next one: >> >>[D]3n1nbk/5qpp/2Q2nq1/1pbQNBB1/p1p1QNn1/2B2Q2/1PP1P3/2K4R w - - >> >>Please, say your result. > >Hi Leonid, > >Green Light Chess v2.13-pr1 finds a mate in 9 ater 10.51 seconds, >and then finds a shorter mate in 8 after 20.73 seconds. It sticks >with this for a full 15 mins. I guess we'll have to wait for other >results to see if a shorter mate is found, or proven not to exist by >chest. Ok, here is my part of the performance: There is no mate in 7 according to Chest (32.7 minutes, K7/600, 350MB hash). As a mate in 8 is found, already, I'm not going to ask Chest for it. Effective branching factor for Chest is around 16, here. Heiner >Cheers, Tim. > >Analysis, GLC 2.13-pr1, 24MB hash, 920MHz Duron: > >>anal > Game stage: Opening > Current eval: 18.38 > Ply Time Score Nodes Principal Variation > 8 5.21 ++ 3602654 Nfxg6+ (a=35.84 b=36.84 e=36.84) > 8 10.51 320.83 7709270 Nfxg6+ Nxg6 Nxg6+ Qxg6 Qxg8+ Kxg8 Bxg6 Bf8 Qcd5+ Kh8 > Rxh7+ Nxh7 Qg8+ Kxg8 Bxh7+ Kh8 Qxf8# <ht> > 8 16.66 320.83 13745k Nfxg6+ Nxg6 Nxg6+ Qxg6 Qxg8+ Kxg8 Bxg6 Bf8 Qcd5+ Kh8 > Rxh7+ Nxh7 Qg8+ Kxg8 Bxh7+ Kh8 Qxf8# <ht> > 9 20.73 320.85 18003k Nfxg6+ Nxg6 Nxg6+ Qxg6 Qxg8+ Kxg8 Bxg6 Bf8 Qee8 Nxc6 > <ht> > 9 33.64 320.85 31079k Nfxg6+ Nxg6 Nxg6+ Qxg6 Qxg8+ Kxg8 Bxg6 Bf8 Qee8 Nxc6 > <ht> > 10 46.11 320.85 44792k Nfxg6+ Nxg6 Nxg6+ Qxg6 Qxg8+ Kxg8 Bxg6 Bf8 Qee8 Nxc6 > Bxh7+ Kh8 Qxf8+ Ng8 Qxg8# <ht>
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