Author: Slater Wold
Date: 14:58:19 09/07/01
Go up one level in this thread
On September 07, 2001 at 17:19:07, José Carlos wrote:
> Last night, in one of my test games, Averno played ...Bxf4 in this position
>(against another program):
>
>[D]4R3/p2r3r/1pNbRp2/2p2k1p/2P2PpP/PP4P1/K7/8 b - - 0 1
>
> The game ended soon:
>
>57. gxf4 g3 58. Re2 Rhg7 59. Re1 g2 60. Rg1 Rd2+ 61. Ka1 Rf2
>62. Ree1 Kxf4 63. a4 Kg3 64. a5 Rc7 65. Nd8 bxa5 66. Kb1 Kxh4 67. Ka1 Kg3
>68. Kb1 h4 69. Ne6 Rc6 70. Nd8 Rb6 71. Ne6 Rxb3+
>{White resigns} 0-1
>
> 59. Re1 is a blunder, but I wonder if the sac is correct at all. It seems that
>59. Rg2 is good enough for white (Averno plays Bxf4 by eval, it doesn't see the
>pawn queening at all in search). Is my passed pawn eval too high here? What do
>other programs think?
>
> Thanks in advance.
>
> José C.
I believe it's an sound sac, and Shredder 5.32 agrees:
w,s - Shredder 5.32
4R3/p2r3r/1pNbRp2/2p2k1p/2P2PpP/PP4P1/K7/8 b - - 0 1
Analysis by Shredder 5.32:
1...Rhe7 2.R6xe7 Rxe7 3.Nxe7+ Bxe7
± (1.11) Depth: 1/2 00:00:00
1...Rhe7 2.R6xe7 Bxe7 3.Rxe7 Rxe7 4.Nxe7+ Ke4
+- (2.43) Depth: 1/2 00:00:00
1...Rhe7 2.R6xe7 Bxe7 3.Rxe7 Rxe7 4.Nxe7+ Ke4
+- (4.40) Depth: 1/2 00:00:00
1...a6
+- (1.60) Depth: 1/2 00:00:00
1...a6
= (0.01) Depth: 1/2 00:00:00
1...a6
= (0.01) Depth: 1/2 00:00:00
1...a6 2.Kb2
= (0.01) Depth: 2/4 00:00:00
1...a6 2.Kb2 Rhf7
= (0.14) Depth: 3/6 00:00:00
1...a6 2.Kb2 Rhf7 3.Kc3
= (0.22) Depth: 4/8 00:00:00
1...Rhf7 2.Kb2 Bxf4 3.Re5+ fxe5 4.Rxe5+ Bxe5+ 5.Nd4+ cxd4
= (0.21) Depth: 4/8 00:00:00
1...Rhf7 2.Re1 a6 3.Kb2
= (-0.03) Depth: 4/8 00:00:00
1...Rhf7 2.Kb2 Bxf4 3.gxf4 Kxf4
= (-0.11) Depth: 5/10 00:00:00
1...Rhf7 2.Kb2 Rfe7 3.R6xe7 Bxe7 4.Nxe7+ Ke4
= (0.14) Depth: 6/12 00:00:00 11kN
1...Rhf7 2.Kb2 Rf8 3.Rxd6 Rxd6 4.Rxf8 Rxc6
= (0.17) Depth: 6/12 00:00:00 21kN
1...Rhf7 2.Kb2 Rf8 3.Rxd6 Rxd6 4.Rxf8 Rxc6
= (0.17) Depth: 7/14 00:00:00 50kN
1...Bf8 2.Re2 Bd6 3.Kb2 Rc7 4.R8e5+ fxe5 5.Rxe5+ Bxe5+ 6.Nd4+ cxd4
= (0.16) Depth: 7/14 00:00:00 121kN
1...Bf8 2.Re2 Bd6 3.b4 Rhg7 4.Rh8 Rh7 5.Rxh7 Rxh7
= (0.06) Depth: 7/14 00:00:00 138kN
1...Bf8 2.Re2 Bd6 3.b4 Rhg7 4.Rh8 Rh7 5.Rxh7 Rxh7
= (0.06) Depth: 8/16 00:00:00 200kN
1...Bf8 2.Re1 Rhf7 3.Kb2 Bd6 4.Rh8 Rc7 5.Nd8 Rh7
= (0.19) Depth: 9/18 00:00:01 432kN
1...Bxf4 2.gxf4 Rd2+ 3.Kb1 g3 4.Re1 Kxf4 5.R8e4+ Kf3 6.Nd4+ cxd4 7.Rf4+ Kxf4
8.Re4+ Kxe4
= (0.18) Depth: 9/18 00:00:01 550kN
1...Bxf4 2.gxf4 Rd2+ 3.Kb1 g3 4.Re1 Kxf4 5.Rf8 f5 6.Kc1
= (0.15) Depth: 9/18 00:00:01 629kN
1...Bxf4 2.gxf4 Rd2+ 3.Kb1 g3 4.Re1 Kxf4 5.Kc1 Rh2 6.Rf1+ Rf2 7.Rfe1
= (0.13) Depth: 10/20 00:00:02 883kN
1...Bxf4 2.gxf4 Rd2+ 3.Kb1 g3 4.Re1 Kxf4 5.Ne7 Rf7 6.Rf1+ Rf2 7.Rxf2+ gxf2
8.Nd5+
= (0.05) Depth: 11/22 00:00:04 1656kN
1...Bxf4 2.gxf4 g3 3.Re1 Kxf4 4.Rf1+ Kg4 5.Rxf6 Rd2+ 6.Kb1 Rg7 7.Re4+ Kh3 8.Rf1
a6 9.Rg1
= (0.18) Depth: 12/24 00:00:14 5572kN
1...Rhg7 2.Kb1 Bxf4 3.Rxf6+ Kxf6 4.Rf8+ Rgf7 5.Nb8 Bxg3 6.Ka2
= (0.17) Depth: 12/24 00:00:22 8450kN
1...Rhg7 2.Re1 Rc7 3.Nb8 Rb7 4.Nc6 Rbc7 5.Nb8
= (0.00) Depth: 12/24 00:00:26 10067kN
1...Rhg7 2.Re1 Rc7 3.Nb8 Rb7 4.Nc6 Rbc7 5.Nb8
= (0.00) Depth: 13/25 00:00:34 13165kN
1...Bxf4 2.gxf4 g3 3.Re1 g2 4.R8e2 Rc7 5.Nd8 Rhd7 6.Kb2 g1R 7.Rxg1
= (-0.01) Depth: 13/25 00:00:40 15603kN
1...Bxf4 2.gxf4 g3 3.Re2 Rhg7 4.Ne7+ Kxf4 5.Nd5+ Rxd5 6.cxd5 g2 7.Rf2+ Kg3
8.Rxg2+ Kxg2 9.Rh8 Kf3
= (-0.03) Depth: 13/25 00:00:44 17307kN
1...Bxf4 2.gxf4 g3 3.Re1 g2 4.Kb2 Rhg7 5.Rg1 Rd2+ 6.Kc3 Rf2 7.Rg8 Rxg8 8.Ne7+
= (-0.01) Depth: 14/26 00:01:02 24150kN
(w, 07.09.2001)
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