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Subject: Re: White to play and Win (Gandalf 6.0)

Author: Odd Gunnar Malin

Date: 05:28:00 11/24/04

Go up one level in this thread


On November 24, 2004 at 06:56:04, Kurt Utzinger wrote:

>On November 24, 2004 at 01:25:02, Nolan Denson wrote:
>
>>Well it may not be a win for white but black being Tiger 2004 lost this game as
>>black.
>>
>>[D]2R5/6k1/7p/5pp1/pq2p3/Q6P/5PPK/1r6 w - - 4 1
>
>New game,
>2R5/6k1/7p/5pp1/pq2p3/Q6P/5PPK/1r6 w - - 0 1
>
>Analysis by Gandalf 6.0: (P4 1.8/56 MB hash)
>
>1.Rc7+ Kf8 2.Rc8+ Ke7 3.Qe3 Qd6+ 4.g3 a3
>  -+  (-3.23)   Depth: 5/21   00:00:00
>1.Qa2 Qb3 2.Rc7+ Kf6 3.Rc6+ Kf7 4.Rc7+ Ke8
>  -+  (-3.23)   Depth: 5/21   00:00:00
>  -+  (-3.00)   Depth: 5/21   00:00:00
>1.Qe3 Qd6+
>  -+  (-3.00)   Depth: 5/21   00:00:00
>1.Qa2 Qb3 2.Rc7+ Kf8 3.Rc8+ Ke7 4.Qd2 Qd3
>  -+  (-3.00)   Depth: 5/21   00:00:00
>  -+  (-3.20)   Depth: 6/24   00:00:00  53kN
>1.Qe3 Qd6+ 2.g3 Kg6 3.Rg8+ Kf7 4.Ra8 Ra1 5.Ra7+ Kf8 6.Ra8+ Kg7
>  -+  (-3.19)   Depth: 6/24   00:00:00  59kN
>  -+  (-2.65)   Depth: 6/24   00:00:00  81kN
>1.Qg3 f4
>  -+  (-2.65)   Depth: 6/24   00:00:00  95kN
>1.Qe3 Qd6+ 2.g3 Kg6 3.Rg8+ Kf7 4.Ra8 Qc6 5.Qa7+ Rb7 6.Qxa4 Qxa4 7.Rxa4 Rb2
>8.Ra7+ Ke6 9.Ra6+ Ke5 10.Kg2
>  -+  (-2.65)   Depth: 6/24   00:00:00  98kN
>  µ  (-1.18)   Depth: 12/41   00:00:29  7636kN
>1.Qg3 f4
>  µ  (-1.18)   Depth: 12/49   00:01:06  17072kN
>  ±  (0.73)   Depth: 15/54   00:21:28  314323kN, tb=76
>
>(Utzinger, MyTown 24.11.2004)

I did the same search in the CP gui with 400MB hash on a Pentiom centrino 2GHz.
and the score raise more. When the 15 ply are solved it have a score of 1.15.

00:00:00.8	-3,23	5	18312	Rc7+ Kf8 Rc8+ Ke7 Qe3 Qd6+ g3 a3
00:00:00.8	-3,23	5	21488	Qa2 Rb3
00:00:00.9	-3,00	5	31429	Qa2 Qb3 Rc7+ Kf6 Rc6+ Kf7 Rc7+ Ke8
00:00:00.9	-3,00	5	33489	Qe3 Qd6
00:00:00.9	-3,00	5	35879	Qa2 Qb3 Rc7+ Kf6 Rc6+ Kf7 Rc7+ Ke8
00:00:00.9	-3,20	6	53231	Qa2 Qb3 Rc7+ Kf8 Rc8+ Ke7 Qd2 Qd3
00:00:00.9	-3,19	6	59386	Qe3 Qd6
00:00:00.9	-2,65	6	81863	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Ra1 Ra7+ Kf8 Ra8+ Kg7
00:00:01.0	-2,65	6	95469	Qg3 f4+
00:00:01.0	-2,65	6	98839	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Ra1 Ra7+ Kf8 Ra8+ Kg7
00:00:01.1	-2,46	7	165461	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Ra1 Ra7+ Kg6
00:00:01.4	-1,95	8	322428	Qe3 Qd6+
00:00:01.6	-1,63	8	463393	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Ra1 Rxa4 Rxa4 Qb3+ Kf6
Qxa4
00:00:02.1	-1,50	9	752209	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Ra1 Qa7+ Qe7 Qd4 Qf6 Rxa4
Rxa4 Qxa4
00:00:03.8	-1,28	10	1800215	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Rb4 Qa7+ Qe7 Qa5 f4
Qf5+ Kg7 gxf4 gxf4 Qxf4
00:00:06.9	-1,21	11	3786430	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Qc6 Qa7+ Rb7 Qxa4 Qxa4
Rxa4 Rb2 Ra7+ Ke6 Kg2
00:00:12.6	-1,18	12	7378100	Qe3 Qd6+ g3 Kg6 Rg8+ Kf7 Ra8 Qc6 Qa7+ Rb7 Qxa4 Qxa4
Rxa4 Rb2 Ra7+ Ke6 Ra6+ Ke5 Kg2
00:00:26.3	-1,18	12	15609249	Qg3 f4+
00:00:29.5	-0,83	12	17604092	Qg3 Qd6+
00:00:33.2	-0,44	12	19885341	Qg3 Qd6+
00:00:40.6	0,00	12	24081617	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rf1 Rc6 Rxf2+ Kh1
Rf1+ Kh2 Rf2+
00:00:46.2	0,00	13	27653777	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rf1 Rc6 Rxf2+ Kh1
Rf1+ Kh2 Rf2+
00:01:29.9	0,00	14	53179237	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rf1 Qh8+ Kf5 Qh7+
Ke5 Re7+ Kd4 Qxe4+ Kc5 Qc2+ Kb6 Qb2+ Kc5 Qa3+ Kd5 Qxf3+ Kc5 Qc3+ Kb6
00:02:32.8	0,28	15	90085798	Qg3 f4
00:03:01.8	0,57	15	107830133	Qg3 Qb3
00:04:04.4	1,15	15	143364440	Qg3 Qb3
00:04:33.1	1,15	15	160589438	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rb2 Qh8+ Ke6
Qxh6+ Kd5 Qxg5+ Kd4 Qg7+ Kd5 Qf7+ Ke5 Re7+ Kd4 Rd7 Rxf2+ Kg1 Rg2+ Kf1 Qxd7 Qxd7+
Ke3 Qxa4 Rxg3
00:08:08.6	1,56	16	289819408	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rf1 Qh8+
00:21:33.8	2,14	17	772725322	Qg3 f4
00:31:35.7	2,20	17	1125815618	Qg3 f4 Rc7+ Kf6 Qg4 Qd6 Qc8 f3+ g3 Rb2 Qh8+ Ke6
Qxh6+ Kd5 Qxg5+ Kd4 Qg7+ Kd5 Qg8+ Kd4 Qc4+ Ke5 Rc5+ Kf6 Rc6 Rxf2+ Kg1 Rg2+ Kf1
Qxc6 Qxc6+ Ke5

Odd Gunnar



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