Author: Dieter Buerssner
Date: 10:36:05 10/23/04
Go up one level in this thread
On October 22, 2004 at 16:17:19, Mihaly Szalai wrote:
>On October 22, 2004 at 13:49:53, Dieter Buerssner wrote:
>
>> 4R3/8/1P1p4/8/2p1kpP1/1r6/1P3K2/8 b - - 2 50
>
>Please, examine this variations:
>
>50... Kd4 51. g5 Rxb2+ 52. Kf3 Rxb6 53. g6 Rb7 54. Re4+ Kd3 (54... Kc3 55. Kxf4
And here, according to my engine, black is winning. After 54... Kc3 55. Kxf4 d5
I get:
8/1r6/6P1/3p4/2p1RK2/2k5/8/8 w - -
Engine: Yace (150 MB)
by Dieter Buerssner
13/29 0:15 -10.01 56.Re6 d4 57.Ra6 Rg7 58.Kg3 Kc2
59.Kf2 d3 60.Ra2+ Kb1 61.Ra6 d2
62.Ke2 c3 63.Rd6 c2 64.Rxd2 c1Q
65.Rd6 Rxg6 (2.988.740) 194
13/29 0:17 -10.01 56.Re6 d4 57.Ra6 Rg7 58.Kg3 Kc2
59.Kf2 d3 60.Ra2+ Kb1 61.Ra6 d2
62.Ke2 c3 63.Rd6 c2 64.Rxd2 c1Q
65.Rd6 Rxg6 (3.106.495) 178
14/33 0:33 -10.01 56.Re6 d4 57.Ra6 Rg7 58.Kf3 d3
59.Kf2 Kc2 60.Ra2+ Kb1 61.Ra6 d2
62.Ke2 c3 63.Rd6 c2 64.Rxd2 c1Q
65.Rd6 Rxg6 66.Rd7 (6.888.075) 204
14/33 0:36 -10.01 56.Re6 d4 57.Ra6 Rg7 58.Kf3 d3
59.Kf2 Kc2 60.Ra2+ Kb1 61.Ra6 d2
62.Ke2 c3 63.Rd6 c2 64.Rxd2 c1Q
65.Rd6 Rxg6 66.Rd7 (7.073.024) 192
15/33 0:48 -10.41-- 56.Re6 d4 57.Ra6 d3 58.Ke3 d2 59.Rd6 Re7+
60.Kf2 Kc2 61.Rc6 d1Q 62.Rxc4+ Kb3
63.Rf4 Qc2+ 64.Kf3 Qxg6 65.Kf2 Re3 (9.844.193) 204
15/33 1:02 -11.40 56.Re6 d4 57.Ra6 d3 58.Ke3 d2
59.Ra3+ Rb3 60.Ra2 d1Q 61.Kf4 Rb6
62.g7 Qd4+ 63.Kf5 Qxg7 64.Re2 (14.379.017) 228
15/33 1:10 -11.40 56.Re6 d4 57.Ra6 d3 58.Ke3 d2
59.Ra3+ Rb3 60.Ra2 d1Q 61.Kf4 Rb6
62.g7 Qd4+ 63.Kf5 Qxg7 64.Re2 (14.770.229) 208
16/34 1:29 -11.80-- 56.Re6 d4 57.Ra6 d3 58.Ke3 d2
59.Ra3+ Kb2 60.Ra6 d1Q 61.Ke4 c3
62.Ke3 c2 63.Ra5 c1Q+ 64.Kf2 (21.759.721) 243
16/37 2:32 -11.80 56.Re6 d4 57.Ra6 d3 (39.454.264) 259
16/37 2:49 -11.80 56.Re6 d4 57.Ra6 d3 (40.908.505) 240
17/39 4:22 -12.20-- 56.Re6 d4 57.Ra6 d3 58.Kf3 d2 59.Ke2 Rb1
60.Ra2 d1Q+ 61.Ke3 Rb6 62.g7 Rf6
63.Ra3+ Kb4 64.Rc3 Kxc3 65.g8N (74.136.801) 282
17/39 4:35 -13.20-- 56.Re6 d4 57.Ra6 d3 58.Kf3 d2 59.Ke2 Rb1
60.Ra2 d1Q+ 61.Ke3 Rb6 62.g7 Rf6
63.Ra3+ Kb4 64.Rc3 Kxc3 65.g8N (78.083.778) 283
17/42 6:30 -18.20-- 56.Re6 d4 57.Ra6 d3 58.Kf3 d2 59.Ke2 Re7+
60.Kf2 d1Q 61.Ra3+ Kb2 62.Rg3 c3
63.Kg2 c2 64.Rc3 Re2+ 65.Kg3 c1Q
66.Rf3 (143.567.185) 367
17/42 6:47 -18.20 56.Re6 d4 57.Ra6 d3 (145.027.458) 355
17/42 10:16 -18.19++ 56.Re1 d4 57.Rc1+ Kd2 58.Rxc4 Rb4
59.Rc7 d3+ 60.Kg5 Ke2 (183.495.125) 297
17/42 13:53 -16.39 56.Re1 Rg7 57.Re3+ Kd2 58.Rg3 c3
59.Ke5 Ke1 (262.705.854) 315
17/42 13:53 -16.39 56.Re1 Rg7 57.Re3+ Kd2 58.Rg3 c3
59.Ke5 Ke1 (262.705.856) 315
18/42 14:39 -16.79-- 56.Re1 Rg7 57.Re3+ Kd2 58.Rg3 c3
59.Ke5 c2 60.Kd4 c1Q 61.Rg2+ Kd1
62.Ke5 (280.444.177) 318
18/42 14:59 -17.79-- 56.Re1 Rg7 57.Re3+ Kd2 58.Rg3 c3
59.Ke5 c2 60.Kd4 c1Q 61.Rg2+ Kd1
62.Rg1+ Kc2 63.Ke5 (285.309.232) 317
18/43 16:16 -22.79-- 56.Re1 Rg7 57.Re3+ Kd2 58.Rg3 c3
59.Ke5 c2 60.Kd4 c1Q 61.Rg2+ Kd1
62.Rg1+ Kc2 63.Rg3 Qd2+ 64.Ke5 Qc3+
65.Kf5 Qxg3 66.Kf6 (342.864.438) 351
18/46 23:36 -22.81 56.Re1 Rg7 57.Re6 d4 58.Rd6 d3
59.Ke3 Rg8 60.Rc6 (544.439.174) 384
18/46 44:33 -22.80++ 56.Re3+ Kc2 57.Re6 d4 58.Rc6 Rg7
59.Rxc4+ Kb2 (1.312.385.490) 490
18/48 110:05 -17.20 56.Re3+ Kd4 57.Re6 c3 (3.900.741.056) 590
[depth 18 finished here]
Score is -17.2! I guess, TBs help quite a bit here. Yesterday, after some
backwards analysis, I had a score of +10 for black after 50... Kd4 51. g5.
Regards,
Dieter
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