Author: Mark Young
Date: 11:35:44 08/18/00
Go up one level in this thread
On August 18, 2000 at 10:07:06, José Antônio Fabiano Mendes wrote: > Bernstein-Vidmar,St.Petersburg 1990 > [an extremely difficult position] >[D]q3b2k/3rbp1p/1n1p1npB/1ppPp1N1/4P1P1/2P2QNP/1PB2P1K/6R1 b > 24...Ng8!!? 25.Qxf7! Bf6!! 26.Qf8 Re7! > Here Bernstein played 27.Ne6?? and lost.World champion Emanuel > Lasker,in his book about the tournament,suggested: > 27.Nh5! Nd7! 28.Nxf6! Nxf8 29.Bxf8 Qa7!! 30.Nxe8 Rxe8 31.Bxd6, > retaining two Bishops and two pawns for the Queen.It is very > difficult to decide who trapped whom in this tangle.What do > the silicon masters think? JAFM > Source:"LASKER and His Contemporaries",Issue Number 1,page 22 > [article "The Profundity of Lasker" by Wolfgang Heidenfeld] Fritz 6a thinks that 24.. Ng8, and 27. Nh5! by lasker is best in the positions. If those moves are best, then the computers did not find those positions that difficult. New position [D]q3b2k/3rbp1p/1n1p1npB/1ppPp1N1/4P1P1/2P2QNP/1PB2P1K/6R1 b - - 0 1 Analysis by Fritz 6: 1...Nxe4 +- (1.97) depth: 1/5 00:00:00 1...Nxe4 2.Bxe4 +- (2.53) depth: 1/6 00:00:00 1...Nfxd5 +- (2.09) depth: 1/6 00:00:00 1...Nfxd5 2.exd5 Qxd5 ± (1.37) depth: 1/6 00:00:00 1...Ra7 ± (1.25) depth: 1/6 00:00:00 1...Ra7 2.b3 ² (0.47) depth: 1/6 00:00:00 1...Ra7 2.b3 ² (0.47) depth: 2/3 00:00:00 1...Ng8 ² (0.37) depth: 2/7 00:00:00 1...Ng8 2.Nxf7+ -+ (-1.66) depth: 2/7 00:00:00 1...Ng8 = (-0.19) depth: 3/4 00:00:00 1...Ng8 2.Qxf7 Bf6 3.Qf8 +- (1.53) depth: 3/9 00:00:00 1...Nbxd5 +- (1.50) depth: 3/15 00:00:00 1kN 1...Nbxd5 2.exd5 ± (1.37) depth: 3/15 00:00:00 1kN 1...Ra7 ± (1.34) depth: 3/15 00:00:00 1kN 1...Ra7 2.b3 b4 ² (0.41) depth: 3/15 00:00:00 1kN 1...Nc4 ² (0.37) depth: 3/15 00:00:00 1kN 1...Nc4 2.Rb1 = (0.25) depth: 3/15 00:00:00 1kN 1...Nc4 2.Bd3 Ra7 3.b3 ² (0.28) depth: 4/13 00:00:00 2kN 1...Qa2! = (0.22) depth: 4/13 00:00:00 2kN 1...Qa2! 2.Rb1 Na4 3.Bd3 Nxb2 = (-0.16) depth: 4/13 00:00:00 2kN 1...Qa2 2.Rb1 Nc4 3.Kg1 Nxb2 = (-0.19) depth: 5/10 00:00:00 4kN 1...Qa2 2.Rb1 Nc4 3.Ne2 = (-0.22) depth: 6/14 00:00:00 10kN 1...Qa2 2.Rb1 Nc4 3.Bd3 Qb3 4.Bxc4 = (0.03) depth: 7/15 00:00:00 23kN 1...Bd8 = (0.00) depth: 7/22 00:00:00 92kN 1...Bd8 2.Qe3 Nc4 3.Qc1 Qa2 4.Qb1 Qxb2 = (-0.16) depth: 7/22 00:00:00 129kN 1...Bd8 2.Qe3 Nc4 3.Qc1 Qa2 4.Qb1 Qxb2 5.Qxb2 = (-0.16) depth: 8/26 00:00:00 200kN 1...Qa2 = (-0.19) depth: 8/26 00:00:00 221kN 1...Qa2 2.Rb1 Nc4 3.Ne2 = (-0.22) depth: 8/26 00:00:00 258kN 1...Qa2 2.Rb1 Nc4 3.Ne2 = (-0.22) depth: 9/31 00:00:01 603kN 1...Qa2 2.Rb1 Nc4 3.Ne2 Nxb2 4.Nc1 Qa3 5.Nd3 Nxd3 6.Bxd3 = (-0.25) depth: 10/31 00:00:02 1522kN 1...Bd8 ³ (-0.28) depth: 10/34 00:00:02 2018kN 1...Ng8 ³ (-0.31) depth: 10/34 00:00:04 2895kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nxh7 Rxh7 5.Bc1 Nc4 6.b3 µ (-1.16) depth: 10/34 00:00:04 3185kN 1...Ng8-- µ (-0.84) depth: 11/26 00:00:04 3346kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nf5 Nd7 5.Qxe8 Qxe8 6.Nxd6 ³ (-0.44) depth: 11/32 00:00:05 4168kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 ³ (-0.38) depth: 12/30 00:00:08 6471kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 ³ (-0.38) depth: 13/33 00:00:24 18793kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 = (-0.16) depth: 14/33 00:00:44 34320kN 1...Ng8 2.Qxf7 Bf6 3.Qf8 Re7 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 = (0.00) depth: 15/39 00:05:29 253773kN (Young, 18.08.2000) New position [D]q3bQnk/4r2p/1n1p1bpB/1ppPp1N1/4P1P1/2P3NP/1PB2P1K/6R1 w - - 0 1 Analysis by Fritz 6: 4.Qxe7 ³ (-0.41) depth: 1/3 00:00:00 4.Qxe7 Nxe7 -+ (-3.31) depth: 1/3 00:00:00 4.Nxh7 -+ (-3.28) depth: 1/3 00:00:00 4.Nxh7 Kxh7 µ (-0.81) depth: 1/7 00:00:00 4.Ne6 µ (-0.78) depth: 1/7 00:00:00 4.Ne6 +- (1.84) depth: 1/7 00:00:00 4.Ne6 Nc4 +- (1.69) depth: 2/8 00:00:00 4.Ne6 ± (1.38) depth: 3/10 00:00:00 4.Ne6 Nd7 5.Bg7+ Bxg7 -+ (-1.62) depth: 3/10 00:00:00 4.Nh5 -+ (-1.59) depth: 3/11 00:00:00 2kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 µ (-1.19) depth: 3/11 00:00:00 3kN 4.Nxh7 µ (-1.16) depth: 3/11 00:00:00 4kN 4.Nxh7 Kxh7 5.g5 µ (-0.78) depth: 3/11 00:00:00 4kN 4.Nxh7 Kxh7 5.g5 Bh8 µ (-0.84) depth: 4/11 00:00:00 5kN 4.Nxh7-- µ (-1.16) depth: 5/11 00:00:00 11kN 4.Nxh7 µ (-1.16) depth: 5/17 00:00:00 14kN 4.Nxh7-- -+ (-1.47) depth: 6/18 00:00:00 27kN 4.Nxh7 -+ (-1.47) depth: 6/18 00:00:00 28kN 4.Nh5! -+ (-1.44) depth: 6/19 00:00:00 30kN 4.Nh5! Nd7 5.Nxf6 Nxf8 6.Bxf8 Ra7 7.Nxe8 Qxe8 8.Bxd6 ³ (-0.37) depth: 6/21 00:00:00 43kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Ra7 7.Nxe8 Qxe8 8.Bxd6 ³ (-0.37) depth: 7/25 00:00:00 111kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Ra7 7.Nxe8 Qxe8 8.Bxd6 ³ (-0.37) depth: 8/22 00:00:00 201kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Rb7 7.Nxe8 Qxe8 8.Bxd6 c4 = (0.00) depth: 9/25 00:00:00 440kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Ra7 7.Nxe8 Qxe8 8.Bxd6 c4 = (0.00) depth: 10/26 00:00:01 863kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Rf7 7.Nxf7+ Bxf7 8.Nd7 Nf6 = (0.09) depth: 11/27 00:00:02 2099kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Rf7 7.Nxf7+ Bxf7 8.Nd7 Nf6 = (0.09) depth: 12/30 00:00:04 3827kN 4.Nh5! ² (0.41) depth: 13/32 00:00:11 9442kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Qd8 7.Bxe7 Qxe7 8.Nxe8 Qxg5 ² (0.63) depth: 14/33 00:00:24 20209kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Qd8 7.Bxe7 Qxe7 8.Nxe8 Qxg5 ² (0.53) depth: 15/34 00:00:48 41740kN 4.Nh5-- = (0.22) depth: 16/34 00:01:14 65435kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Qd8 7.Nxe8 Rd7 8.Bxd6 Qxg5 = (0.06) depth: 16/36 00:01:47 94256kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Qd8 7.Bxe7 Qxe7 8.Nfxh7 Nf6 = (0.16) depth: 17/36 00:04:37 243622kN 4.Nh5 Nd7 5.Nxf6 Nxf8 6.Bxf8 Qd8 7.Nxe8 Rd7 8.Bxd6 Qxg5 = (0.16) depth: 18/39 00:10:24 545831kN (Young, 18.08.2000)
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