Author: John Merlino
Date: 19:32:30 12/15/02
Go up one level in this thread
On December 15, 2002 at 21:57:45, Art Basham wrote: >Gambit Tiger takes 11 ply to find.... >1.....Bd3! (Opening the g file for the Rook)... >If 2. QxB, Rg1+ wins for black! > >[D]2k1r1r1/1pb2p2/p5b1/2qP4/2P2P2/4pP1p/P3Q2P/2RBRN1K b - - 0 1 CM9000, on a P3-733, finds it in five seconds: Time Depth Score Positions Moves 0:00 1/4 -1.58 2725 1...Bxf4 2.Ba4 Re7 3.Ng3 Qd4 0:00 1/5 -1.32 19233 1...Bxf4 2.Rc3 Qa5 3.Rb3 Bh5 4.Rxe3 Bxe3 5.Nxe3 0:01 1/6 -1.56 60948 1...Bxf4 2.Ba4 Re7 3.Rcd1 Bf5 4.Ng3 Bxg3 5.hxg3 Rxg3 0:01 1/6 -1.70 67563 1...Qd4 2.Bc2 Bxc2 3.Qxc2 Qxf4 4.Qe2 Rg2 0:02 1/7 -1.86 155156 1...Qd4 2.f5 Bxf5 3.Bc2 Bxc2 4.Rxc2 Rg2 0:04 1/8 -3.33 294460 1...Qd4 2.f5 Bxf5 3.Bc2 Bxc2 4.Qxc2 Qf4 5.Ng3 Qxf3+ 6.Kg1 Bxg3 7.hxg3 Qxg3+ 8.Kh1 Qg2+ 9.Qxg2 Rxg2 0:05 1/8 -4.58 394611 1...Bd3 2.Qxd3 Rg1+ 3.Kxg1 e2+ 4.Ne3 Rxe3 5.Kh1 Rxd3 6.Rxe2 Rxd5 7.cxd5 Qxc1 0:07 1/9 -4.53 599248 1...Bd3 2.Qxd3 Rg1+ 3.Kxg1 e2+ 4.Ne3 Rxe3 5.Kh1 Rxd3 6.Rxe2 Rxd5 7.cxd5 Qxc1 8.Re8+ Kd7 0:15 1/10 -5.27 1282458 1...Bd3 2.Qxd3 Rg1+ 3.Kxg1 e2+ 4.Ne3 Rxe3 5.Kh1 Rxd3 6.Bxe2 Qf2 7.Bf1 Qxf3+ 8.Kg1 Qxf4 9.Rc2 0:57 2/11 -7.60 4797308 1...Bd3 2.Ng3 Bxe2 3.Nxe2 Ba5 4.Rf1 Bd2 5.Rc2 Rg2 6.f5 b6 7.f4 1:45 3/12 -7.72 9335773 1...Bd3 2.Ng3 Bxe2 3.Nxe2 Ba5 4.Rf1 Rg2 5.Ba4 Re7 6.Rc2 Qa3 7.Bb3 f5 5:03 4/13 -7.81 29015675 1...Bd3 2.Ng3 Bxe2 3.Nxe2 Rg2 4.Bc2 Ba5 5.Bf5+ Kb8 6.Bxh3 Rf2 7.Nc3 Qxc4 8.Ne4 Qxa2 You should note that different programs report their search depth differently. Fritz, from what I've been told, reports the MAXIMUM extension depth for the given PV, whereas CM reports the MINIMUM extension depth. Other programs, like Gambit Tiger, might do something different. jm
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