Author: Omid David Tabibi
Date: 13:52:33 12/12/02
Go up one level in this thread
On December 12, 2002 at 16:39:04, John Merlino wrote: >On December 12, 2002 at 15:56:43, Omid David Tabibi wrote: > >>On December 12, 2002 at 15:07:47, John Merlino wrote: >> >>>On December 12, 2002 at 14:01:55, Gian-Carlo Pascutto wrote: >>> >>>>[D]rnbq1k1r/1p1nb3/p2pp2p/6PQ/4P2B/2N5/PPP3PP/R3KB1R w KQ - 0 13 >>>> >>>>From Tim Krabbe's site: Bb5! >>>> >>>>-- >>>>GCP >>> >>>Chessmaster 9000, on a P3-733, finds it in 1 second, loses it at 25 seconds, and >>>gets it back at 2:19. It still gives Black about a half-pawn advantage. Of >>>course, on a top-end computer, another depth or two could give quite different >>>results in this double-edged position.... >>> >>>Time Depth Score Positions Moves >>>0:00 1/3 -0.31 4268 13.Bxa6 Ne5 14.O-O+ Kg8 >>>0:00 1/4 -0.63 9097 13.Bxa6 Ne5 14.O-O+ Kg8 15.Bb5 >>> Bxg5 16.Bxg5 Qxg5 >>>0:00 1/5 -0.34 35390 13.Bxa6 Ne5 14.Bg3 Nbc6 15.O-O+ Kg8 >>>0:01 1/6 -0.71 67135 13.Bxa6 Ne5 14.Bb5 Nbc6 15.O-O+ >>> Kg8 16.Rae1 Bxg5 17.Bxg5 Qxg5 >>>0:01 1/6 -0.60 87497 13.Bb5 Ne5 14.Bg3 Bxg5 15.O-O+ >>> Ke7 16.Bxe5 Qb6+ 17.Kh1 dxe5 >>>0:03 1/7 -0.60 208575 13.Bb5 Ne5 14.Bg3 Bxg5 15.O-O+ >>> Ke7 16.Bxe5 Qb6+ 17.Kh1 dxe5 >>>0:11 1/8 -1.22 904118 13.Bb5 Kg7 14.O-O Ne5 15.Bg3 Ng6 >>> 16.Qf3 hxg5 17.Bc4 Qb6+ 18.Kh1 Qxb2 >>>0:25 1/8 -1.19 2074905 13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7 >>> 16.O-O b5 17.Bb3 Nbc6 >>>0:39 1/9 -1.09 3331036 13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7 >>> 16.O-O b5 17.Bb3 Nbc6 18.Rad1 >>>1:38 1/10 -1.24 8769881 13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7 >>> 16.O-O b5 17.Bb3 Nbc6 18.a3 d5 >>>2:19 1/10 -0.46 12525813 13.Bb5 Kg7 14.O-O Qg8 15.g6 Nf6 >>> 16.Bxf6+ Bxf6 17.Rxf6 Kxf6 18.Rf1+ >>> Kg7 19.Rf7+ Qxf7 20.gxf7 axb5 21.Nxb5 >>> Rxa2 22.Nxd6 Rxb2 >>>4:02 2/11 -0.46 22342279 13.Bb5 Kg7 14.O-O Qg8 15.g6 Nf6 >>> 16.Bxf6+ Bxf6 17.Rxf6 Kxf6 18.Rf1+ >>> Kg7 19.Rf7+ Qxf7 20.gxf7 axb5 21.Nxb5 >>> Rxa2 22.Nxd6 Rxb2 >> >>Finding 13.Bb5 should be very easy for every computer. This opening was first >>introduced in a match between national teams of USSR and Argentina. The >>Argentinians played this opening on several boards (not expecting 13.Bb5), all >>the Russian Grandmasters found 13.Bb5 and went on to crush black. >> >>The key defence move is 13...Rh7 which the Argentinians didn't find. Does >>Chessmaster manage to find that move? >> > >It takes over 7 minutes on my humble P3-733, but CM9000 does find it and give it >a drawish score: > >Time Depth Score Positions Moves >0:00 1/3 -1.57 3632 13...Ne5 14.O-O+ Kg8 15.Bc4 Qb6+ > 16.Bf2 Qxb2 >0:00 1/4 -0.77 10792 13...Ne5 14.Bg3 Bxg5 15.O-O+ Bf6 > 16.Rad1 >0:00 1/5 -0.60 27066 13...Ne5 14.Bg3 Bxg5 15.O-O+ Ke7 > 16.Bxe5 Qb6+ 17.Kh1 dxe5 >0:00 1/6 -0.60 72809 13...Ne5 14.Bg3 Bxg5 15.O-O+ Ke7 > 16.Bxe5 Qb6+ 17.Kh1 dxe5 >0:02 1/7 0.22 149768 13...Ne5 14.Bg3 Kg7 15.Bxe5+ dxe5 > 16.O-O Rh7 17.Rf7+ Kh8 18.Rxh7+ > Kxh7 19.Qxh6+ Kg8 >0:07 1/7 -1.25 654151 13...Kg7 14.O-O Ne5 15.Bg3 Ng6 > 16.Qf3 hxg5 17.Bc4 Qb6+ 18.Kh1 Qxb2 >0:16 1/8 -1.48 1610243 13...Kg7 14.O-O Ne5 15.Bg3 Ng6 > 16.Qf3 hxg5 17.Be2 Rf8 18.Qe3 Nc6 >0:46 1/9 -0.50 4519555 13...Kg7 14.O-O Qg8 15.g6 Nf6 16.Qf3 > Qd8 17.e5 dxe5 18.Rad1 >1:56 1/10 -0.59 11892623 13...Kg7 14.O-O Qg8 15.g6 Nf6 16.Qf3 > Qd8 17.e5 dxe5 18.Rad1 Qb6+ 19.Kh1 > Rf8 >3:36 2/11 0.04 21923698 13...Kg7 14.O-O Ne5 15.Bg3 Ng6 > 16.gxh6+ Rxh6 17.Rf7+ Kxf7 18.Qxh6 > axb5 19.Rf1+ Ke8 20.Qxg6+ Kd7 21.Rd1 > Nc6 22.Nxb5 >7:16 2/11 -0.08 42609756 13...Rh7 14.O-O+ Kg8 15.g6 Rg7 > 16.Bxd7 Nxd7 17.Bxe7 Qxe7 18.Qxh6 > Ne5 19.Rad1 Rxg6 >15:10 3/12 -0.08 87819302 13...Rh7 14.O-O+ Kg8 15.g6 Rg7 > 16.Bxd7 Nxd7 17.Bxe7 Qxe7 18.Qxh6 > Ne5 19.Rad1 Rxg6 > Good work Chessmaster 9000! >jm
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