Author: Vincent Lejeune
Date: 17:06:59 10/21/03
Go up one level in this thread
On October 21, 2003 at 17:39:37, John Merlino wrote: >On October 21, 2003 at 15:26:59, Darren Rushton wrote: > >>[D] 7k/6p1/r2B3p/4P3/4b3/3n3B/6PP/5RK1 w - - 0 1 >> >>White could have won by force. 1.e6! Rd6 2.e7 Bc6 3.Rf8+ Kh7 4.Bf5+! g6 5.Rd8 >>Rf6 6.Bd7 Bd7 7.Rd7. >> >>Yusupov overlooked the intermediate check 4.Bf5+ and chose 1.g3? Kh7 2.Bg2 Bg2 >>3.Kg2 Kg6 4.Rf8, but Timman found a defence: 4...Nb2!, after which it turned out >>to be impossible to convert [his] extra pawn into victory. >> >>Does your program find the correct continuation? >> >>Regards, >> >>Daz > >It takes Chessmaster 9000, on a humble P3-750, 0:09 to find the answer. HOWEVER, >it chooses a slightly different move order: 1.Rf8+ Kh7 2.e6 Rxd6 3.e7 Bc6 4.Bf5+ >g6 5.Rd8 Rf6.... > >THEN, it switches to 1.e6 with a convincing score after 1:02, but with an >entirely different line: > >Time Depth Score Positions Moves >0:00 1/3 1.92 1451 1.Bd7 Ra2 2.Rf8+ Kh7 >0:00 1/3 1.97 1968 1.g3 Ra2 2.Rf8+ Kh7 3.e6 >0:00 1/3 2.15 2875 1.Be6 Ra8 2.Bd7 Ra2 >0:00 1/4 2.00 6218 1.Be6 Ra5 2.Rf8+ Kh7 3.Bg8+ Kg6 > 4.Bf7+ Kg5 >0:00 1/5 1.80 21185 1.Be6 Ra5 2.Bc7 Ra8 3.Bf7 Rc8 >0:00 1/5 1.85 25235 1.g3 Rc6 2.Bd7 Rc2 3.Rf8+ Kh7 4.e6 >0:00 1/6 1.74 73740 1.g3 Rc6 2.Rf8+ Kh7 3.Rd8 Rc1+ > 4.Bf1 Bf5 5.Ba3 Rc3 >0:01 1/6 1.79 145481 1.Rf8+ Kh7 2.Kf1 g5 3.g3 Ra1+ 4.Ke2 > Ra2+ 5.Ke3 Rxh2 6.Kxe4 Rxh3 7.Kxd3 > Rxg3+ 8.Kd4 >0:02 1/6 1.92 185612 1.Be6 Rb6 2.Bd7 Rb2 3.Bh3 Rc2 4.e6 >0:03 1/7 1.37 262680 1.Be6 Ra5 2.h3 Kh7 3.Rf5 Nc5 4.Rf4 > Nxe6 5.Rxe4 >0:04 1/7 1.78 412959 1.Rf8+ Kh7 2.e6 Rxd6 3.e7 Bc6 4.Rd8 > Rf6 5.Rxd3 Kg6 6.Re3 >0:09 2/8 1.74 866884 1.Rf8+ Kh7 2.e6 Rxd6 3.e7 Bc6 4.Bf5+ > g6 5.Rd8 Rf6 6.Bxd3 Re6 >0:18 3/9 2.16 1847357 1.Rf8+ Kh7 2.e6 Rxd6 3.e7 Bc6 4.Bf5+ > g6 5.Rd8 Rf6 6.Bd7 Rf2 7.Bxc6 >0:40 4/10 2.19 4274357 1.Rf8+ Kh7 2.e6 Ra1+ 3.Rf1 Rxf1+ > 4.Kxf1 Kg6 5.e7 Bc6 6.Ke2 Nb2 7.Be6 > Kf6 8.Bb3 Bb5+ 9.Ke3 >1:02 4/10 3.27 6672334 1.e6 Nf2 2.Rxf2 Rxd6 3.Rf8+ Kh7 > 4.e7 Bc6 5.Rd8 Rf6 6.e8=Q Bxe8 > 7.Rxe8 >1:13 5/11 3.31 8030575 1.e6 Nf2 2.Kxf2 Rxd6 3.e7 Bg6 4.Rc1 > Rd5 5.Rc8+ Kh7 6.e8=Q Bxe8 7.Rxe8 > Kg6 8.Ke3 Rd1 >2:11 6/12 3.27 15049957 1.e6 Kh7 2.e7 Bg6 3.Bf5 Ra8 4.Bxd3 > Bxd3 5.Rf8 Ra1+ 6.Kf2 Bg6 7.e8=Q > Bxe8 8.Rxe8 Rd1 9.Bb4 Kg6 > >jm 6 sec to find the line with 4.Bf5+ , then prefere other line for black Analysis by Hiarcs 9: ... 1.g3 Rh7 2.Tf7 Fg6 3.Tf8 Ta1+ 4.Tf1 Ta2 +- (2.14) Profondeur: 7/9 00:00:00 1.g3 Rh7 2.Tf8 Tc6 3.Tc8 Rg6 +- (2.09) Profondeur: 8/22 00:00:00 78kN 1.Tf8+ Rh7 +- (2.09) Profondeur: 8/26 00:00:00 295kN 1.Tf8+ Rh7 +- (2.39) Profondeur: 8/28 00:00:00 401kN 1.Tf8+ Rh7 2.e6 Txd6 3.e7 Fc6 4.Td8 Tg6 5.Ff5 Cb4 6.Fxg6+ Rxg6 +- (2.41) Profondeur: 8/28 00:00:01 536kN 1.Tf8+ Rh7 2.e6 Fg6 3.e7 h5 4.Fb8 Tb6 5.Fg3 Tb1+ 6.Tf1 Tb2 +- (2.50) Profondeur: 9/28 00:00:02 1026kN 1.e6 Txd6 +- (2.51) Profondeur: 9/28 00:00:02 1209kN 1.e6 Txd6 +- (2.66) Profondeur: 9/28 00:00:03 1271kN 1.e6 Rh7 2.e7 Ta8 3.g3 Fg6 4.Fd7 Fe8 5.Ff5+ Fg6 +- (3.13) Profondeur: 9/28 00:00:04 1734kN 1.e6 Rh7 2.e7 Ta8 3.g3 Fg6 4.Fd7 Fe8 5.Ff5+ Fg6 +- (3.38) Profondeur: 10/29 00:00:05 2302kN 1.e6 Txd6 2.e7 Fc6 3.Tf8+ Rh7 4.Ff5+ g6 5.Td8 Tf6 6.Fd7 Tf2 7.Fxc6 Td2 +- (3.59) Profondeur: 10/29 00:00:06 2787kN 1.e6 Txd6 2.e7 Fc6 3.Tf8+ Rh7 4.Ff5+ g6 5.Td8 Tf6 6.Fd7 Tf2 7.Fxc6 Td2 +- (3.84) Profondeur: 11/32 00:00:12 4994kN, tb=4 1.e6 g5 2.e7 Fg6 3.Fb8 Fe8 4.Tf8+ Rg7 5.g3 Fb5 6.e8D Fxe8 7.Txe8 Ta1+ 8.Ff1 Rf7 9.Tc8 +- (3.84) Profondeur: 11/35 00:00:14 6072kN, tb=4 1.e6 g5 2.e7 Fg6 3.Fb8 Fe8 4.Tf8+ Rg7 5.g3 Fb5 6.e8D Fxe8 7.Txe8 Ta1+ 8.Ff1 Rf7 9.Tc8 +- (4.09) Profondeur: 12/35 00:00:26 11095kN, tb=12 1.e6 Rh7 2.e7 Ta8 3.Ff5+ Fxf5 4.Txf5 Rg6 5.g4 +- (4.09) Profondeur: 12/35 00:00:30 12838kN, tb=12 1.e6 g5 2.e7 Fg6 3.Fb8 Cf4 4.Fd7 Ta8 5.Tb1 Rg7 6.Fc6 Ta5 7.e8D Fxe8 +- (3.98) Profondeur: 13/37 00:01:08 28771kN, tb=21 1.e6 g5 2.e7 Fg6 3.Fb8 Cf4 4.Fd7 Ta8 5.Tb1 Rg7 6.Fc6 Ta5 7.e8D Fxe8 8.Fxe8 Ta2 9.Tb7+ +- (4.02) Profondeur: 14/41 00:02:16 56458kN, tb=56
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