Author: Enrique Irazoqui
Date: 01:45:49 12/19/00
Go up one level in this thread
On December 18, 2000 at 22:59:33, Laurence Chen wrote: >This position has bothered the most for the longest time, it was fascinating to >see that the chess engines I used to analyse this position gives a ? or ?? for >Black's move 26. ... Bg7. Eric Schiller awarded this move !!, Fritz awarded ??, >so the $64.00 question, who is right? The position is listed below before >Black's 26. ... Bg7 >[D]r5k1/ppp4p/3p3b/3Pn3/1n1KP1p1/1P3rP1/PBB1N2R/R2Q4 b - - 0 26 > >Now Fritz 6, and Gambit Tiger like the move 26. ... c5+, when I play the move >26. ... Bg7, both engines think that White can save this position, can this >position be really saved after 26. ... Bg7? > >[D]r5k1/ppp3bp/3p4/3Pn3/1n1KP1p1/1P3rP1/PBB1N2R/R2Q4 w - - 0 27 > >This position seems to be a tough nut to crack. It could be one of those >positions which humans are better than chess engines in tactics !!! Deep Fritz would play c5+ in a game at 40/120, but it likes Bg7 even better after forcing it. Enrique New position r5k1/ppp4p/3p3b/3Pn3/1n1KP1p1/1P3rP1/PBB1N2R/R2Q4 b - - 0 1 Analysis by DEEP FRITZ : 1...Bg7! +- (7.16) Depth: 1/9 00:00:00 1...Bg7! +- (7.16) Depth: 1/9 00:00:00 1...Bg7! +- (7.16) Depth: 1/9 00:00:00 1...Bg7 2.Bc3 c5+ 3.dxc6 +- (7.03) Depth: 2/11 00:00:00 1...Be3+! +- (6.87) Depth: 2/11 00:00:00 1...Be3+! 2.Kc3 Bg1+ 3.Kxb4 +- (6.50) Depth: 2/14 00:00:00 1kN 1...b5! +- (6.37) Depth: 2/15 00:00:00 2kN 1...b5! 2.Bd3 Rxd3+ 3.Qxd3 ± (1.37) Depth: 2/15 00:00:00 2kN 1...b5 2.Bd3 Rxd3+ 3.Qxd3 ± (1.37) Depth: 3/8 00:00:00 2kN 1...b5 2.Bd3 Rxd3+ 3.Qxd3 Nbxd3 ± (1.37) Depth: 4/18 00:00:00 7kN 1...c5+! ± (1.34) Depth: 4/18 00:00:00 12kN 1...c5+! 2.dxc6 b5 3.Qd3 Nbxc6+ 4.Kd5 Nb4+ 5.Kxd6 ± (0.81) Depth: 4/21 00:00:00 14kN 1...c5+! ² (0.50) Depth: 5/19 00:00:00 19kN 1...c5+! 2.dxc6 b5 3.Bd3 µ (-0.81) Depth: 5/20 00:00:00 31kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Rxd1+ 7.Rxd1 µ (-0.81) Depth: 6/21 00:00:00 83kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Rxd1+ 7.Rxd1 µ (-0.81) Depth: 7/27 00:00:00 306kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Rxd1+ 7.Rxd1 µ (-0.81) Depth: 8/25 00:00:00 812kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Rxd1+ 7.Rxd1 µ (-0.81) Depth: 9/30 00:00:01 2679kN 1...c5+! µ (-1.13) Depth: 10/24 00:00:02 4706kN 1...c5+! 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Bxb2 7.Nf4 -+ (-1.94) Depth: 10/34 00:00:04 7235kN 1...c5+-- -+ (-1.63) Depth: 11/34 00:00:10 19141kN 1...c5+-- 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Bxb2 7.Qb1 -+ (-1.53) Depth: 11/34 00:00:11 19988kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Bxb2 7.Qb1 -+ (-1.53) Depth: 12/37 00:00:29 53047kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Bxb2 7.Qb1 -+ (-1.81) Depth: 13/39 00:01:18 143208kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Bxb2 7.Qb1 -+ (-1.72) Depth: 14/42 00:04:11 462717kN 1...c5+ 2.dxc6 b5 3.Bd3 Nexc6+ 4.Kc3 Bg7+ 5.Kd2 Rxd3+ 6.Ke1 Rxd1+ 7.Rxd1 -+ (-1.81) Depth: 15/44 00:11:15 1247882kN (Irazoqui, Cadaqués 19.12.2000) New position r5k1/ppp3bp/3p4/3Pn3/1n1KP1p1/1P3rP1/PBB1N2R/R2Q4 w - - 0 1 Analysis by DEEP FRITZ : 2.Rxh7 Kxh7 +- (3.53) Depth: 1/13 00:00:00 2.Rxh7 Kxh7 +- (3.53) Depth: 1/13 00:00:00 2.Nf4! +- (3.56) Depth: 1/19 00:00:00 2.Nf4! c5+ 3.dxc6 +- (4.44) Depth: 1/19 00:00:00 1kN 2.a3! +- (4.47) Depth: 1/19 00:00:00 1kN 2.a3! c5+ 3.dxc6 +- (4.75) Depth: 1/19 00:00:00 2kN 2.Bc3! +- (4.88) Depth: 1/19 00:00:00 2kN 2.Bc3! c5+ 3.dxc6 +- (7.03) Depth: 1/19 00:00:00 2kN 2.Bc3 c5+ 3.dxc6 Nxc2+ 4.Qxc2 +- (7.03) Depth: 2/17 00:00:00 3kN 2.Bc3-- +- (5.59) Depth: 3/17 00:00:00 4kN 2.Bc3-- b5 3.Rxh7 c5+ -+ (-#3) Depth: 3/17 00:00:00 6kN 2.Rh4! -+ (-9.69) Depth: 3/17 00:00:00 8kN 2.Rh4! b5 3.Bd3 c5+ 4.Kc3 -+ (-1.69) Depth: 3/20 00:00:00 11kN 2.Nc1! -+ (-1.59) Depth: 3/20 00:00:00 17kN 2.Nc1! Ned3+ 3.Kc4 Nxb2+ 4.Kxb4 a5+ 5.Kb5 µ (-1.12) Depth: 3/20 00:00:00 17kN 2.Ng1! µ (-1.09) Depth: 3/20 00:00:00 20kN 2.Ng1! Ned3+ 3.e5 Bxe5+ 4.Kc4 Nxb2+ 5.Kxb4 ± (0.94) Depth: 3/20 00:00:00 26kN 2.Bc1! ± (0.97) Depth: 3/20 00:00:00 28kN 2.Bc1! b5 ± (1.00) Depth: 3/20 00:00:00 29kN 2.a4! ± (1.03) Depth: 3/20 00:00:00 31kN 2.a4! Ned3+ 3.Kc4 Nxb2+ 4.Kxb4 Nxd1 +- (2.13) Depth: 3/22 00:00:00 36kN 2.Rxh7! +- (2.16) Depth: 3/22 00:00:00 39kN 2.Rxh7! Kxh7 3.Qh1+ Kg8 4.Qb1 +- (3.50) Depth: 3/22 00:00:00 41kN 2.Qd2! +- (3.53) Depth: 3/23 00:00:00 47kN 2.Qd2! c5+ 3.dxc6 Nexc6+ 4.Kc4 Bxb2 +- (4.25) Depth: 3/23 00:00:00 51kN 2.Qd2-- +- (3.91) Depth: 4/13 00:00:00 51kN 2.Qd2-- b5 3.Qxb4 Nc6# -+ (-#2) Depth: 4/18 00:00:00 57kN 2.Rxh7! -+ (-8.75) Depth: 4/18 00:00:00 65kN 2.Rxh7! Kxh7 3.Bc3 c5+ 4.dxc6 Nexc6+ 5.Kc4 +- (3.28) Depth: 4/19 00:00:00 76kN 2.Rxh7-- +- (2.97) Depth: 5/19 00:00:00 88kN 2.Rxh7-- b5 3.Rxg7+ Kxg7 4.Bd3 Rxd3+ 5.Qxd3 = (0.13) Depth: 5/22 00:00:00 117kN 2.Nf4! = (0.16) Depth: 5/31 00:00:00 212kN 2.Nf4! b5 3.Qxf3 Nxf3+ = (0.25) Depth: 5/31 00:00:00 236kN 2.Ng1! ² (0.28) Depth: 5/31 00:00:00 291kN 2.Ng1! Ned3+ 3.e5 Bxe5+ 4.Kc4 Nxb2+ 5.Kxb4 a5+ 6.Kb5 Nxd1 ± (0.88) Depth: 5/31 00:00:00 310kN 2.Ng1 Ned3+ 3.e5 Bxe5+ 4.Kc4 Nxb2+ 5.Kxb4 a5+ 6.Kb5 Nxd1 7.Rxd1 ± (0.88) Depth: 6/24 00:00:00 418kN 2.Ng1 Ned3+ 3.e5 Bxe5+ 4.Kc4 Nxb2+ 5.Kxb4 a5+ 6.Kb5 Nxd1 7.Rxd1 Bf6 ± (0.88) Depth: 7/25 00:00:00 801kN 2.Ng1-- ² (0.56) Depth: 8/29 00:00:01 1476kN 2.Ng1-- c5+ 3.dxc6 Ned3+ 4.Kc4 b5+ 5.Kxb5 Rb8+ 6.Ka4 Nxb2+ 7.Ka3 Nc4+ = (0.00) Depth: 8/31 00:00:01 1816kN 2.Ng1 c5+ 3.dxc6 Ned3+ 4.Kc4 b5+ 5.Kxb5 Rb8+ 6.Ka4 Nxb2+ 7.Ka3 Nc4+ = (0.00) Depth: 9/30 00:00:02 4472kN 2.Ng1 c5+ 3.dxc6 Ned3+ 4.Kc4 b5+ 5.Kxb5 Rb8+ 6.Ka4 Nxb2+ 7.Ka3 Nc4+ = (0.00) Depth: 10/34 00:00:05 10735kN 2.Ng1 c5+ 3.dxc6 Ned3+ 4.Kc4 b5+ 5.Kxb5 Rb8+ 6.Ka4 Nxb2+ 7.Ka3 Nxd1 = (-0.25) Depth: 11/36 00:00:14 27705kN 2.Ng1 Rxg3 3.Ne2 Rf3 4.Ng1 c5+ 5.dxc6 Ned3+ 6.Kc4 b5+ 7.Kxb5 Rb8+ = (-0.22) Depth: 12/37 00:00:52 99699kN 2.Ng1 Rxg3 3.Ne2 Rf3 4.Ng1 c5+ 5.dxc6 Ned3+ 6.Kc4 b5+ 7.Kxb5 = (-0.22) Depth: 13/39 00:02:15 257498kN 2.Ng1-- ³ (-0.53) Depth: 14/37 00:03:14 360659kN 2.Ng1-- Rxg3 3.Ne2 Rf3 4.Ng1 Ned3+ 5.Kc4 Nxb2+ 6.Kxb4 Bc3+ 7.Ka3 b5 -+ (-2.28) Depth: 14/40 00:05:40 647006kN (Irazoqui, Cadaqués 19.12.2000)
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