Author: Uri Blass
Date: 23:48:49 01/08/05
Go up one level in this thread
On January 09, 2005 at 02:42:44, Uri Blass wrote: >On January 09, 2005 at 00:45:33, Les Fernandez wrote: > >>Following are 2 positions that I would like analyzed so that I can compare the >>times it takes to solve these 2 positions on several differnet engines. Can a >>few of you run, using different engines, these 2 positions and report the amount >>of time it takes to find the mate move along with the move? After I get a few >>analyses and have had time to review them I will report back with my results. >> >>Position #1 >> >>[D]1b3rk1/pp4pp/2p3n1/1P1p4/P2P2q1/R4NPb/3NBK2/3QR3 b - - > >Fruit2(fast) solve both positions at depth 4 in less than a second. > >New game, >1b3rk1/pp4pp/2p3n1/1P1p4/P2P2q1/R4NPb/3NBK2/3QR3 b - - 0 1 > >Analysis by Fruit 2.0: > >1...Qxd4+ 2.Re3 Bd6 3.bxc6 bxc6 > = (-0.08) Depth: 1/10 00:00:00 >1...Bxg3+ 2.Ke3 Qf4+ 3.Kd3 Bxe1 4.Qxe1 > ยต (-0.98) Depth: 1/10 00:00:00 >1...Bxg3+ 2.Ke3 Qe6+ 3.Ne5 Bxe1 4.Qxe1 Nxe5 5.dxe5 Qxe5+ 6.Kd3 > -+ (-2.47) Depth: 2/19 00:00:00 >1...Qxg3+ 2.Ke3 Bf5 3.Bd3 Re8+ 4.Ne4 dxe4 > -+ (-2.77) Depth: 2/19 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bxe1 5.Qxe1 > -+ (-7.13) Depth: 2/19 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Nf4 5.Bf1 Bxe1 6.Qxe1 > -+ (-7.43) Depth: 3/19 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 4/25 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 5/25 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 6/25 00:00:01 1505kN >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 7/25 00:00:05 5391kN > >(, MyTown 09.01.2005) > >> >>Position #2 >> >>[D]1b3rk1/pp4pp/2p3n1/1Pqp4/P2P4/R4NPb/3NBK2/3QR3 b - - > >New game, >1b3rk1/pp4pp/2p3n1/1Pqp4/P2P4/R4NPb/3NBK2/3QR3 b - - 0 1 > >Analysis by Fruit 2.0: > >1...Qxa3 2.bxc6 bxc6 > -+ (-3.08) Depth: 1/3 00:00:00 >1...Qxa3 2.Qc2 > -+ (-3.02) Depth: 2/12 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bxe1 5.Qxe1 > -+ (-7.13) Depth: 2/15 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Nf4 5.Bf1 Bxe1 6.Qxe1 > -+ (-7.43) Depth: 3/19 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 4/25 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 5/25 00:00:00 >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 6/25 00:00:00 925kN >1...Qxd4+ 2.Re3 Bxg3+ 3.Kg1 Qxe3+ 4.Kh1 Bg2+ 5.Kxg2 Qf2+ 6.Kh1 Rf5 7.Bf1 Rh5+ >8.Bh3 Rxh3+ 9.Nh2 Rxh2# > -+ (-#9) Depth: 7/25 00:00:03 3209kN > >(, MyTown 09.01.2005) checking some more programs suggest that movei is extremely slow here and other programs that I tried solve it in smaller depth than depth 12. Maybe the problem is pruning because it is not interested in mate when it can see a big score. Uri
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