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Subject: Re: Shredder-Yace The Magic Buttons

Author: Uri Blass

Date: 08:01:42 02/23/03

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On February 23, 2003 at 09:50:30, Rolf Tueschen wrote:

>On February 23, 2003 at 09:23:59, Uri Blass wrote:
>
>>On February 23, 2003 at 08:49:08, Rolf Tueschen wrote:
>>
>>>On February 23, 2003 at 08:38:54, Uri Blass wrote:
>>>
>>>>On February 23, 2003 at 08:34:44, Rolf Tueschen wrote:
>>>>
>>>>>On February 23, 2003 at 08:15:59, Rolf Tueschen wrote:
>>>>>
>>>>>>56.Ke3 ?????
>>>>>>
>>>>>>Now after Kxc2 Yace is winning ...
>>>>>
>>>>>
>>>>>Correction 86. Ke3 ????
>>>>>
>>>>>And now 109. Kb1 forced ZUGZWANG ===> but Yace can only draw because White holds
>>>>>the a pawn. Black should have gone for the a-Pawn earlier.
>>>>
>>>>No
>>>>Yace won the game.
>>>>
>>>>Shredder - YACE
>>>>[D]8/8/8/8/p1bp4/P3k3/8/1KN5 b - - 0 1
>>>>
>>>>Analysis by Yace 0.99.56:
>>>>
>>>>109...d3 110.Nxd3
>>>>  =  (0.00)   Depth: 1   00:00:00
>>>>109...Kd2
>>>>  -+  (-1.99)   Depth: 1   00:00:00
>>>>109...Bd5
>>>>  -+  (-2.03)   Depth: 1   00:00:00
>>>>109...Ke4
>>>>  -+  (-2.07)   Depth: 1   00:00:00
>>>>109...Ke4 110.Kb2
>>>>  -+  (-2.01)   Depth: 2   00:00:00
>>>>109...Ke4 110.Kb2 Ke3
>>>>  -+  (-1.99)   Depth: 3   00:00:00
>>>>109...Bd5 110.Kb2 Be4
>>>>  -+  (-2.01)   Depth: 3   00:00:00
>>>>109...Bd5 110.Ka1 Be4 111.Kb2
>>>>  -+  (-2.01)   Depth: 4   00:00:00
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka1 Bd5 112.Kb2 Be4 113.Ka1 Bd5 114.Kb2 Be4
>>>>  -+  (-2.03)   Depth: 4   00:00:00
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka2 Bd3
>>>>  -+  (-2.07)   Depth: 4   00:00:00
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka2 Bd5+ 112.Ka1 Be4 113.Kb2 Bd3
>>>>  -+  (-2.01)   Depth: 5   00:00:00  1kN
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka2 Bf5 112.Kb2 Bd3 113.Nb3
>>>>  -+  (-1.99)   Depth: 6   00:00:00  5kN
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka2 Bh7 112.Kb2 Bd3
>>>>  -+  (-2.02)   Depth: 7   00:00:00  11kN
>>>>109...Bd3+ 110.Kb2 Be4 111.Ka2 Bh7 112.Kb2 Bd3 113.Na2 Ke2
>>>>  -+  (-2.02)   Depth: 8   00:00:00  17kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Ke3 113.Kb2 Be4 114.Ka2 Bh7 115.Kb2
>>>>Bd3
>>>>  -+  (-2.03)   Depth: 8   00:00:00  17kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Ke3 113.Kb2 Be4 114.Ka2 Bh7 115.Kb2
>>>>Bd3
>>>>  -+  (-2.03)   Depth: 9   00:00:00  43kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kc1 115.Ne6
>>>>  -+  (-2.09)   Depth: 10   00:00:00  77kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kd1 115.Kb2 d2
>>>>116.Kc3
>>>>  -+  (-2.34)   Depth: 11   00:00:01  149kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kc1 115.Ne2+
>>>>Kd2 116.Nd4 Kc1 117.Ne2+ Kd2 118.Nd4 Kc1
>>>>  -+  (-2.20)   Depth: 12   00:00:01  272kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kd1 115.Kb2 d2
>>>>116.Nb5 Ke2 117.Nd4+ Kd3
>>>>  -+  (-2.21)   Depth: 13   00:00:01  458kN
>>>>109...Kd2 110.Kb2 Be6 111.Kb1 Bd5 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kc3 115.Nb5+
>>>>Kb3 116.Nc7 d2 117.Na8
>>>>  -+  (-2.61)   Depth: 14   00:00:01  598kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Be6
>>>>  -+  (-2.62)   Depth: 14   00:00:01  598kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Be6 112.Ka1 Kc2 113.Ne2 d3 114.Nd4+ Kc3 115.Nb5+
>>>>Kb3 116.Nc7 Kxa3 117.Nd5
>>>>  -+  (-3.02)   Depth: 15   00:00:02  953kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Kc3 112.Ne2+ Kb3
>>>>  -+  (-3.02)   Depth: 15   00:00:02  953kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Bb3 112.Ka1
>>>>  -+  (-3.42)   Depth: 16   00:00:03  1554kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Bb3 112.Ka1 Bg8 113.Kb1 Bd5 114.Ka1 Kc2 115.Ne2 d3
>>>>116.Nd4+ Kc3 117.Nb5+ Kc4 118.Nd6+ Kb3 119.Nf5 d2 120.Ne3 Be4 121.Nd1
>>>>  -+  (-3.69)   Depth: 16   00:00:04  1554kN
>>>>109...Kd2 110.Kb2 Bd5 111.Kb1 Bb3 112.Ka1 Bg8 113.Kb1 Bd5 114.Ka1 Kc2 115.Ne2 d3
>>>>116.Nd4+ Kc3 117.Nb5+ Kc4 118.Nd6+ Kb3 119.Nf5 d2 120.Ne3 Be4 121.Nd1 Kxa3
>>>>122.Nc3
>>>>  -+  (-3.69)   Depth: 17   00:00:05  2663kN
>>>>109...Kd2 110.Kb2 Be6 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kb3 115.Kb1
>>>>Bd7 116.Nd4+ Kc3 117.Nf3 Bc6 118.Ka1
>>>>  -+  (-4.09)   Depth: 18   00:00:08  4406kN
>>>>109...Kd2 110.Kb2 Be6 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kb3 115.Kb1
>>>>Bd7 116.Nd4+ Kc3 117.Nf3 Bc6 118.Ng5 d2 119.Ka1
>>>>  -+  (-5.09)   Depth: 18   00:00:08  4406kN
>>>>109...Kd2 110.Kb2 Bf7 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Kb2
>>>>Kxb5 116.Kc3 Bg6 117.Kd2 Kc4 118.Kd1 Be4 119.Kc1
>>>>  -+  (-6.24)   Depth: 18   00:00:09  5004kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Bf7 112.Kb1 Bb3 113.Ka1 Kc2 114.Ne2 d3 115.Nd4+
>>>>Kc3 116.Nf3
>>>>  -+  (-6.64)   Depth: 19   00:00:13  6954kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Ba8 112.Kb1 d3
>>>>  -+  (-6.64)   Depth: 19   00:00:15  7541kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Nd6+
>>>>Kb3 116.Nb5 d2 117.Nd4+ Kc4 118.Ka2
>>>>  -+  (-7.04)   Depth: 20   00:00:18  9112kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Nd6+
>>>>Kb3 116.Nf5 d2 117.Nd4+ Kc4 118.Ka2
>>>>  -+  (-8.04)   Depth: 20   00:00:19  9500kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Kb2
>>>>Kxb5 116.Kc3 Be4 117.Kd2 Kc4 118.Ke3 Kc3 119.Kxe4 d2 120.Kd5 d1Q+ 121.Ke6
>>>>  -+  (-10.11)   Depth: 20   00:00:26  12740kN
>>>>109...Kd2 110.Kb2 Bd5 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Nc7
>>>>d2 116.Nxd5 d1Q+ 117.Kb2 Qd2+ 118.Ka1
>>>>  -+  (-10.51)   Depth: 21   00:00:31  15891kN
>>>>109...Kd2 110.Kb2
>>>>  -+  (-11.51)   Depth: 21   00:00:31  15891kN
>>>>109...Kd2 110.Kb2 Bf7 111.Ka1 Kc2 112.Ne2 d3 113.Nd4+ Kc3 114.Nb5+ Kc4 115.Kb2
>>>>Kxb5 116.Kc3 Bg6 117.Kd2 Kc4 118.Ke3 d2 119.Kf4 d1Q 120.Kg5 Qd6
>>>>  -+  (-13.99)   Depth: 21   00:00:56  29218kN
>>>>109...Kd2 110.Nb3+ axb3 111.Kb2
>>>>  -+  (-14.39)   Depth: 22   00:01:11  36934kN
>>>>109...Kd2 110.Kb2 Bf7 111.Ka1 Bd5 112.Kb1 Bb3 113.Ka1 Bg8
>>>>  -+  (-20.39)   Depth: 22   00:06:07  191836kN
>>>>
>>>>(Blass, Tel-Aviv 23.02.2003)
>>>>
>>>
>>>
>>>Uri, thanks. :) How about 86. Ke3???
>>
>>I do not know if white had a good alternative
>>
>>Shredder7 and Fritz8 like Ke2 with exactly the same line(I do not plan to give
>>it a long time and it may be better if other people with more tablebases and
>>better hardware will do it)
>>
>>Shredder - YACE
>>[D]8/8/3N3k/3pP1p1/pP1P4/P1p2K2/2b5/8 w - - 0 1
>>
>>Analysis by Shredder 7:
>>
>>86.e6
>>  +-  (3.65)   Depth: 1/1   00:00:00
>>86.e6 Bd1+ 87.Kf2
>>  +-  (2.01)   Depth: 2/3   00:00:00
>>86.e6 Bd1+ 87.Kf2
>>  +-  (1.98)   Depth: 2/5   00:00:00
>>86.Kf2 Bd3
>>  +-  (2.00)   Depth: 2/5   00:00:00
>>86.Kf2 Bd3
>>  +-  (2.00)   Depth: 2/5   00:00:00
>>86.Nf7+ Kg6 87.e6
>>  +-  (3.06)   Depth: 2/5   00:00:00
>>86.Nf7+ Kg6 87.e6
>>  +-  (3.06)   Depth: 2/5   00:00:00
>>86.Nf7+ Kg6 87.Nd8 Kf5
>>  +-  (2.24)   Depth: 3/5   00:00:00
>>86.Nf7+ Kg6 87.e6 Bd1+ 88.Kf2
>>  ±  (1.34)   Depth: 3/6   00:00:00
>>86.Nf7+ Kg6 87.e6 Be4+ 88.Kf2
>>  ±  (1.13)   Depth: 3/7   00:00:00
>>86.e6 Bd3 87.Kf2
>>  +-  (1.92)   Depth: 3/12   00:00:00
>>86.e6 Bd1+ 87.Kf2 Kg6
>>  +-  (2.12)   Depth: 3/12   00:00:00
>>86.e6 Bg6 87.b5 Bh5+ 88.Kf2
>>  +-  (2.17)   Depth: 4/10   00:00:00
>>86.e6 Bg6 87.Ke2 Kg7 88.Kd1
>>  +-  (2.37)   Depth: 5/12   00:00:00
>>86.e6 Bg6 87.Kf2 c2 88.e7 c1Q 89.Nf7+ Bxf7
>>  +-  (2.12)   Depth: 6/12   00:00:00
>>86.e6 Bg6 87.Ke3 Kg7 88.e7 Kf6 89.e8B Bxe8 90.Nxe8+ Kf5
>>  +-  (1.86)   Depth: 6/14   00:00:00
>>86.Ke2 Bb3 87.Kd3 Bd1
>>  +-  (1.87)   Depth: 6/14   00:00:00
>>86.Ke2 Bg6 87.Kf1
>>  +-  (1.87)   Depth: 6/14   00:00:00
>>86.Ke2 Bg6 87.b5 g4 88.Kd1 g3 89.b6
>>  +-  (1.99)   Depth: 7/13   00:00:00  24kN
>>86.Ke2 Bg6 87.b5 Kg7 88.b6 Kh7
>>  +-  (2.17)   Depth: 8/16   00:00:00  42kN
>>86.Nb5 g4+ 87.Ke3 Kg6 88.Nxc3 Kf7
>>  +-  (2.18)   Depth: 8/16   00:00:01  55kN
>>86.Nb5 Bd1+ 87.Ke3 c2 88.Kd2 Kg6 89.Nd6 g4 90.b5
>>  +-  (2.41)   Depth: 8/16   00:00:01  58kN
>>86.Nb5 Bd1+ 87.Ke3 c2 88.Kd2 Kg6 89.Nd6 g4 90.Ke1 c1Q
>>  +-  (2.16)   Depth: 9/14   00:00:01  61kN
>>86.Nb5 Bd1+ 87.Ke3 c2 88.Kd2 Kg6 89.Nc7 g4 90.Nxd5 Kf5
>>  +-  (1.93)   Depth: 9/14   00:00:01  71kN
>>86.Ke2 Bg6 87.b5 Kg7 88.b6 g4 89.b7 Bh7
>>  +-  (1.94)   Depth: 9/16   00:00:01  82kN
>>86.Ke2 Bg6 87.b5 Kg7 88.b6 Kh8
>>  +-  (2.29)   Depth: 9/16   00:00:01  91kN
>>86.Ke2 Bg6 87.b5 Kg7 88.b6 c2 89.Nf5+ Bxf5 90.b7 c1Q
>>  +-  (2.29)   Depth: 9/16   00:00:01  95kN
>>86.Ke2 Bg6 87.b5 g4 88.b6 g3 89.b7 c2 90.Kf3 c1Q
>>  +-  (2.04)   Depth: 10/16   00:00:01  128kN
>>86.Ke2 Bg6 87.b5 g4 88.b6 g3 89.e6 Be4 90.Nxe4 c2 91.b7 c1Q 92.b8Q Qxa3
>>  +-  (2.04)   Depth: 10/19   00:00:01  147kN
>>86.Ke3 Kg7 87.Nb5 g4 88.Nxc3 Bd3
>>  +-  (2.05)   Depth: 10/23   00:00:02  286kN
>>86.Ke3 Bg6 87.Nc8 c2 88.Kd2 Kg7 89.Nb6 Kf7
>>  +-  (2.05)   Depth: 10/23   00:00:02  293kN
>>86.Ke3 Bg6 87.e6 g4 88.e7 g3 89.e8Q Bxe8 90.Kd3 c2 91.Nb5 c1Q
>>  +-  (1.81)   Depth: 11/18   00:00:02  331kN
>>86.Ke3 Bg6 87.e6 g4 88.e7 g3 89.e8Q Bxe8 90.Nxe8 g2 91.Ke2 g1Q 92.Ng7 Kxg7
>>  +-  (1.56)   Depth: 12/20   00:00:03  482kN
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.b5 Bh5 92.Ng1
>>  +-  (1.44)   Depth: 12/23   00:00:04  546kN
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ke1
>>  ±  (1.19)   Depth: 13/30   00:00:07  1172kN
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Kc1 Kg7 92.b5 Kf7
>>  ±  (0.83)   Depth: 13/30   00:00:07  1277kN
>>86.Ke2 Bg6 87.e6 g4 88.Kd1 g3 89.Kc1
>>  ±  (0.84)   Depth: 13/33   00:00:14  2740kN
>>86.Ke2 Bg6 87.Kd1 g4 88.Kc1 g3 89.Kd1 g2 90.Nf7+ Bxf7 91.Kc2 g1Q 92.e6 Qxd4
>>  ±  (0.84)   Depth: 13/33   00:00:14  2767kN
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 c1B+ 91.Nxc1 g2 92.Ne2 g1N
>>  ±  (1.09)   Depth: 14/29   00:00:18  3713kN
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Kg5 92.b5 Kf4 93.b6
>>  ±  (1.30)   Depth: 14/29   00:00:18  3852kN, tb=3
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.e6 Kg7 92.Nf4 g1Q 93.Nh5+
>>Bxh5
>>  ±  (1.05)   Depth: 15/34   00:00:24  5151kN, tb=3
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.e6 Bb5 93.Kxc2
>>Bd3+ 94.Kxd3
>>  ±  (1.05)   Depth: 15/34   00:00:30  6524kN, tb=5
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.e6 Bb5 93.Kxc2
>>Bd3+ 94.Kxd3
>>  ±  (1.06)   Depth: 15/36   00:00:42  9634kN, tb=6
>>86.Ke3 Bg6 87.Nb5 c2 88.Nd6
>>  ±  (1.06)   Depth: 15/36   00:00:43  9640kN, tb=6
>>86.Ke3 Bg6 87.Nb5 c2 88.Nd6 c1Q+ 89.Ke2 Qxa3 90.Nb5 Qxb4 91.e6 Qxb5+ 92.Kd2 g4
>>93.Kd1
>>  ±  (0.81)   Depth: 16/36   00:00:48  10981kN, tb=6
>>86.Ke3 Bg6 87.Nb5 c2 88.Nd6 c1Q+ 89.Ke2 Qxa3 90.Nb5 Qxb4 91.e6 Qxb5+ 92.Kd2 g4
>>93.Kc3
>>  ²  (0.31)   Depth: 16/36   00:00:49  11255kN, tb=6
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.e6 c1Q+ 93.Kxc1
>>  ²  (0.31)   Depth: 16/38   00:01:30  23725kN, tb=67
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 Bh5 91.Nxg3 Kg7
>>  ²  (0.32)   Depth: 16/38   00:01:34  24630kN, tb=69
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 Bh5 91.Nxg3 Kg7 92.Nxh5+ Kh6
>>  ²  (0.67)   Depth: 16/38   00:01:37  25368kN, tb=71
>>86.Ke2 Bg6 87.Nb5 c2 88.e6
>>  ²  (0.67)   Depth: 16/38   00:01:38  25562kN, tb=71
>>86.Ke2 Bg6 87.Nb5 c2 88.e6 c1Q 89.e7 Bf7 90.Nd6 Qxa3 91.e8Q Bxe8 92.Nf5+ Kg6
>>93.b5 Kxf5
>>  ²  (0.42)   Depth: 17/36   00:02:48  40347kN, tb=75
>>86.Ke2 Bg6 87.Nb5 c2 88.e6 c1Q 89.e7 Bf7 90.Nd6 Kg6 91.Nxf7 Kxf7 92.e8Q+ Kxe8
>>93.b5
>>  =  (-0.08)   Depth: 17/38   00:02:52  41307kN, tb=75
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.Nf3 Kg7 93.b5
>>Bxb5 94.Kxc2
>>  ³  (-0.44)   Depth: 17/39   00:04:11  61942kN, tb=139
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.Nf3 Kg7 93.b5
>>Bxb5 94.Kxc2
>>  ³  (-0.49)   Depth: 18/40   00:08:39  118155kN, tb=190
>>
>>(Blass, Tel-Aviv 23.02.2003)
>>
>>Shredder - YACE
>>8/8/3N3k/3pP1p1/pP1P4/P1p2K2/2b5/8 w - - 0 1
>>
>>Analysis by Fritz 8:
>>
>>86.b5 g4+ 87.Ke3 Bg6 88.b6 Kg5 89.b7 c2
>>  ±  (0.94)   Depth: 7/16   00:00:00  28kN
>>86.Ke2!
>>  ±  (0.97)   Depth: 7/16   00:00:00  35kN
>>86.Ke2!
>>  ±  (1.13)   Depth: 7/16   00:00:00  38kN
>>86.Ke2 Bg6 87.b5 Kh5 88.b6 Kg4 89.Kd1 Kf4
>>  ±  (0.91)   Depth: 8/16   00:00:00  53kN
>>86.Ke3!
>>  ±  (0.94)   Depth: 8/20   00:00:00  86kN
>>86.Ke3!
>>  ±  (1.09)   Depth: 8/20   00:00:00  101kN
>>86.Ke3 Bh7 87.e6 g4
>>  ±  (1.13)   Depth: 8/20   00:00:00  107kN
>>86.Ke3--
>>  ±  (0.84)   Depth: 9/20   00:00:00  121kN
>>86.Ke3 Bg6 87.b5 g4 88.e6 g3 89.e7 g2 90.Kf2
>>  ±  (0.72)   Depth: 9/29   00:00:00  156kN
>>86.Ke3--
>>  ²  (0.44)   Depth: 10/18   00:00:00  224kN
>>86.Ke3 Bg6 87.b5 g4 88.b6 g3 89.b7 g2 90.Kf2 c2 91.b8Q g1Q+ 92.Kxg1 c1Q+ 93.Kf2
>>Qf4+
>>  ²  (0.34)   Depth: 10/24   00:00:00  250kN
>>86.Ke2!
>>  ²  (0.38)   Depth: 10/24   00:00:00  274kN
>>86.Ke2 Bg6 87.e6 g4 88.e7 g3 89.Nf5+ Kg5 90.Ne3 g2 91.Nxg2
>>  ²  (0.41)   Depth: 10/24   00:00:00  285kN
>>86.Ke2 Bg6 87.e6 g4 88.e7 g3 89.Nf5+ Kg5 90.Ne3 c2
>>  ²  (0.41)   Depth: 11/25   00:00:01  469kN
>>86.Ke3!
>>  ²  (0.44)   Depth: 11/25   00:00:01  490kN
>>86.Ke3!
>>  ²  (0.59)   Depth: 11/26   00:00:01  513kN
>>86.Ke3 Bg6 87.e6 g4 88.e7 Kg5 89.b5 g3 90.e8Q
>>  ²  (0.63)   Depth: 11/26   00:00:01  534kN
>>86.Ke3--
>>  ²  (0.34)   Depth: 12/25   00:00:02  737kN
>>86.Ke3 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.b5 g2 91.Ne2 Bd3 92.Ng1 Bxb5 93.Kxc2
>>Kh5 94.Kd2 Kg4
>>  µ  (-0.78)   Depth: 12/31   00:00:03  932kN
>>86.e6!
>>  µ  (-0.75)   Depth: 12/32   00:00:07  2828kN
>>86.e6!
>>  ³  (-0.59)   Depth: 12/32   00:00:07  2919kN
>>86.e6!
>>  ³  (-0.28)   Depth: 12/32   00:00:07  3080kN
>>86.e6 Bg6 87.Ke2 g4 88.e7
>>  =  (-0.19)   Depth: 12/32   00:00:08  3233kN
>>86.e6--
>>  ³  (-0.47)   Depth: 13/35   00:00:10  3929kN
>>86.e6 g4+ 87.Ke2 Bg6 88.e7 Kg5 89.Nb5 c2 90.Kd2 g3 91.Nc3 g2 92.Ne2 Kf6 93.e8Q
>>Bxe8 94.Kxc2 Bb5
>>  µ  (-1.31)   Depth: 13/38   00:00:12  5181kN
>>86.Ke2!
>>  µ  (-1.28)   Depth: 13/38   00:00:14  5713kN
>>86.Ke2!
>>  µ  (-1.12)   Depth: 13/38   00:00:14  5755kN
>>86.Ke2!
>>  µ  (-0.81)   Depth: 13/38   00:00:14  5786kN
>>86.Ke2!
>>  =  (-0.19)   Depth: 13/38   00:00:15  5830kN
>>86.Ke2--
>>  ³  (-0.47)   Depth: 14/30   00:00:17  6859kN
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Kg5 92.b5
>>  ³  (-0.50)   Depth: 14/44   00:00:18  7263kN, tb=1
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Kg5 92.b5
>>  ³  (-0.50)   Depth: 15/36   00:00:27  10830kN, tb=1
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.e6 Kg6
>>  ³  (-0.66)   Depth: 16/36   00:00:44  18666kN, tb=1
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3
>>  ³  (-0.62)   Depth: 17/41   00:01:39  42830kN, tb=1
>>86.Ke2 Bg6 87.Nb5 c2 88.Kd2 g4 89.Nc3 g3 90.Ne2 g2 91.Ng1 Bd3 92.b5 Bxb5 93.Kxc2
>>Kg5 94.Kd2
>>  µ  (-0.75)   Depth: 18/41   00:03:15  85528kN, tb=1
>>
>>(Blass, Tel-Aviv 23.02.2003)
>>
>>Uri
>
>
>Uri, please try this line from Shredder:
>
>86.Nb5 Bd1+ 87.Ke3 c2 88.Kd2 Kg6 89.Nc7 g4 90.Nxd5 Kf5 (see above)
>
>But now try 89. Nc3! Without comp I think it's a win for White. But 86. Ke3 was
>just one point. Earlier White also could have tried 'Kxg5'. Anyway, that is
>better for White, NOT Black.

In this line 88...g4 is better and 89.e6 is suggested by Shedder7 after 88...g4.
I have other things to do and I have no time to analyze but I see that both
sides promote in the main line of shredder.


Shredder - YACE
[D]8/8/7k/1N1pP1p1/pP1P4/P7/2pK4/3b4 b - - 0 1

Analysis by Fritz 8:

88...g4!
  ³  (-0.44)   Depth: 7/22   00:00:00  21kN
88...g4!
  µ  (-0.72)   Depth: 7/24   00:00:00  33kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kf5 91.Nd6+ Ke6 92.Nb7 g3 93.b5 g2 94.Nc5+ Ke7
  µ  (-0.78)   Depth: 7/26   00:00:00  43kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kf5 91.Nd6+ Ke6 92.Nb7 g3 93.b5 g2 94.Nc5+ Ke7
  µ  (-0.78)   Depth: 8/16   00:00:00  46kN
88...g4!
  µ  (-1.06)   Depth: 9/24   00:00:00  70kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kf5 91.Nd6+ Ke6 92.Nb7 g3
  µ  (-1.06)   Depth: 10/24   00:00:00  96kN
88...g4!
  µ  (-1.34)   Depth: 11/27   00:00:00  184kN
88...g4!
  -+  (-1.63)   Depth: 12/29   00:00:00  327kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kf5 91.Nh6+ Kf4 92.Nxg4 Bxg4 93.Kxc2 Ke4 94.Kc3 Bd7
95.b5 Bxb5 96.e6
  -+  (-1.81)   Depth: 12/29   00:00:01  448kN
88...g4!
  -+  (-2.09)   Depth: 13/32   00:00:01  739kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kf5 91.Nh6+ Kf4 92.Nxg4 Bxg4 93.Kxc2 Ke4 94.Kc3 Bd7
  -+  (-2.09)   Depth: 14/31   00:00:03  1356kN
88...g4!
  -+  (-2.38)   Depth: 15/35   00:00:06  2609kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kg6 91.e6 g3 92.Nd6 Kg5
  -+  (-2.38)   Depth: 16/35   00:00:12  5169kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kg6 91.e6 g3 92.Ne5+ Kf6 93.e7 Kxe7 94.Ng6+ Kf6
95.Nh4 Kg5 96.Ng2 Kg4 97.Ne1 Kh3 98.b5
  -+  (-2.63)   Depth: 17/38   00:00:27  12089kN
88...g4 89.Nd6 Kg5 90.Nf7+ Kg6 91.e6 g3 92.Ne5+ Kf6 93.e7 Kxe7 94.Ng6+ Kf6
95.Nh4 Kg5 96.Ng2 Kg4 97.Ne1 Kh3 98.b5
  -+  (-2.63)   Depth: 18/40   00:00:52  23339kN
88...g4--
  -+  (-2.34)   Depth: 19/44   00:01:37  43941kN
88...g4 89.Nd6 Kg5
  -+  (-2.34)   Depth: 19/49   00:01:54  52185kN

(Blass, Tel-Aviv 23.02.2003)


Shredder - YACE
8/8/7k/1N1pP3/pP1P2p1/P7/2pK4/3b4 w - - 0 1

Analysis by Shredder 7:

89.Nd6
  +-  (2.65)   Depth: 1/1   00:00:00
89.Nd6
  +-  (2.65)   Depth: 1/1   00:00:00
89.Nd6 c1N 90.Kxc1
  +-  (2.20)   Depth: 2/3   00:00:00
89.Nd6 g3
  +-  (1.89)   Depth: 2/3   00:00:00
89.Nc3 Kg5
  +-  (2.33)   Depth: 2/3   00:00:00
89.Nc3 Kh5
  +-  (2.68)   Depth: 2/4   00:00:00
89.Nc3 c1N 90.Kxc1
  +-  (2.68)   Depth: 2/5   00:00:00
89.Nc3 Kg6 90.Nxa4
  +-  (3.00)   Depth: 3/5   00:00:00
89.Nc3 g3 90.Nxa4
  +-  (3.20)   Depth: 3/5   00:00:00
89.Nc3 g3 90.Nb1 cxb1Q
  +-  (2.95)   Depth: 4/6   00:00:00
89.Nc3 g3 90.Nb1 cxb1Q
  +-  (2.45)   Depth: 4/6   00:00:00
89.Nc3 g3 90.e6 g2 91.e7 g1Q 92.e8Q Qxd4+ 93.Kc1 Qxc3 94.Qxa4
  -+  (-2.37)   Depth: 4/11   00:00:00
89.Nd6 c1N
  µ  (-0.97)   Depth: 4/11   00:00:00
89.Nd6 Kg7
  =  (-0.03)   Depth: 4/11   00:00:00
89.Nd6 Kg7 90.Nf5+ Kf7 91.Ne3
  +-  (1.74)   Depth: 4/11   00:00:00
89.Nc7 Kg5
  +-  (1.82)   Depth: 4/11   00:00:00
89.Nc7 Kg5 90.Nxd5 Kf5
  +-  (1.95)   Depth: 4/11   00:00:00
89.Nc7 g3 90.Ke3
  +-  (1.54)   Depth: 5/7   00:00:00
89.Nc7 g3 90.Kc1 g2 91.e6 g1Q 92.Nxd5
  ±  (0.97)   Depth: 5/9   00:00:00
89.Nc7 g3 90.e6 g2 91.e7 Bh5 92.e8Q Bxe8 93.Kxc2 g1Q 94.Nxe8
  -+  (-2.29)   Depth: 5/12   00:00:00
89.Nc3 c1N
  µ  (-0.98)   Depth: 5/12   00:00:00
89.Nc3 c1N 90.Kxc1 Bf3
  ±  (0.90)   Depth: 5/12   00:00:00
89.Nc3 g3 90.e6 g2 91.Nb1 cxb1Q
  ±  (0.90)   Depth: 5/12   00:00:00
89.Nd6 g3
  ±  (1.39)   Depth: 5/12   00:00:00
89.Nd6 Kg5
  +-  (1.84)   Depth: 5/12   00:00:00
89.Nd6 Kg5 90.b5 g3 91.b6
  +-  (1.88)   Depth: 5/12   00:00:00
89.Nd6 Kg5 90.Nf5 Kxf5 91.Kd3 c1Q
  +-  (1.63)   Depth: 6/9   00:00:00
89.Nd6 Kg5 90.Nf5 Kxf5 91.Kd3 c1Q
  ±  (1.13)   Depth: 6/9   00:00:00
89.Nd6 Kg5 90.Nf7+ Kf5 91.Nd8 g3 92.e6
  ²  (0.47)   Depth: 6/12   00:00:00
89.Nd6 c1N
  ±  (0.80)   Depth: 7/14   00:00:00  11kN
89.Nd6 Kg5 90.b5 g3 91.e6 g2 92.e7 g1Q 93.Ne4+ dxe4
  ±  (0.80)   Depth: 7/15   00:00:00  13kN
89.Nd6 Kg5 90.b5 g3 91.e6 g2 92.e7 g1Q 93.Ne4+ dxe4
  ²  (0.55)   Depth: 8/14   00:00:00  19kN
89.Nd6 Kg5 90.b5 g3 91.e6 g2 92.e7 g1Q 93.Ne4+ dxe4
  =  (0.05)   Depth: 8/15   00:00:00  21kN
89.Nd6 Kg5 90.Nf7+ Kf5 91.Nd6+ Kg5 92.Nf7+ Kf5 93.Nd6+ Kg5 94.Nf7+
  =  (0.01)   Depth: 8/15   00:00:00  26kN
89.Nd6 Kg6 90.b5 g3 91.e6 g2 92.e7 Kf6 93.e8Q Bh5 94.Qxh5
  =  (0.00)   Depth: 9/17   00:00:00  68kN
89.Nd6 Kg6 90.b5 g3 91.e6 Kf6 92.Nf5 Kxf5 93.Ke1 c1Q
  =  (-0.25)   Depth: 10/21   00:00:01  86kN
89.Nd6 Kg6 90.b5 g3 91.e6 Kf6 92.Nf5 Kxf5 93.Ke1 c1Q
  µ  (-0.75)   Depth: 10/21   00:00:01  90kN
89.Nd6 Kg6 90.b5 g3 91.e6 Kf6 92.e7 Be2
  µ  (-0.75)   Depth: 10/23   00:00:01  109kN
89.Nd6 Kg6 90.b5 g3 91.e6 Bh5 92.e7 Kg5 93.e8R Bxe8 94.Kc1 g2 95.Ne4+ dxe4
  µ  (-1.00)   Depth: 11/20   00:00:01  165kN
89.Nd6 Kg6 90.e6 Kf6 91.Nf5 Kxe6 92.Ne3 g3 93.b5 Bf3 94.Nxc2
  µ  (-1.28)   Depth: 11/28   00:00:01  215kN
89.e6 g3 90.e7 Bh5 91.Nc3 g2 92.Ne2 Bxe2 93.e8Q c1Q+ 94.Kxc1 g1Q+ 95.Kd2 Qxd4+
96.Kxe2 Qg4+ 97.Kf2 Qg3+ 98.Kxg3
  µ  (-1.27)   Depth: 11/28   00:00:02  296kN
89.e6 g3 90.e7 Bh5 91.Nc3 g2 92.Ne2 Bxe2 93.e8Q c1Q+ 94.Kxc1 g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qxd4+ 98.Kxe2 Qg4+ 99.Kf2 Qf3+ 100.Kxf3
  µ  (-1.15)   Depth: 11/28   00:00:02  352kN
89.e6 g3 90.e7 Bh5 91.Nc3 g2 92.Ne2 Bxe2 93.e8Q c1Q+ 94.Kxc1 g1Q+ 95.Kd2 Qd1+
96.Ke3 Ba6
  µ  (-1.24)   Depth: 12/27   00:00:03  511kN
89.e6 g3 90.e7 Bh5 91.Nc3 g2 92.Ne2 Bxe2 93.e8Q c1Q+ 94.Kxc1 g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Bg4
  µ  (-1.04)   Depth: 13/29   00:00:04  890kN
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf4 Qxd4+ 98.Qe4 dxe4
  µ  (-1.29)   Depth: 14/31   00:00:06  1389kN
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qf3+ 98.Ke1 Ba6
  µ  (-1.36)   Depth: 14/31   00:00:08  1843kN
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qf3+ 98.Ke1
  µ  (-1.28)   Depth: 15/35   00:00:16  3767kN, tb=5
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qf3+ 98.Ke1
  µ  (-1.12)   Depth: 16/37   00:00:35  8472kN, tb=18
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qf3+ 98.Ke1 Qf1+ 99.Kd2
  µ  (-1.13)   Depth: 17/40   00:01:08  16088kN, tb=52
89.e6 g3 90.e7 c1Q+ 91.Kxc1 Bh5 92.Nc3 g2 93.Ne2 Bxe2 94.e8Q g1Q+ 95.Kd2 Qd1+
96.Ke3 Qd3+ 97.Kf2 Qf3+ 98.Ke1
  µ  (-1.12)   Depth: 18/42   00:02:30  35621kN, tb=165

(Blass, Tel-Aviv 23.02.2003)



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