Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: White to play and Win !!!!!

Author: Ricardo Gibert

Date: 23:40:18 11/23/04

Go up one level in this thread


On November 24, 2004 at 02:03:54, John Merlino 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
>>
>>What really is the best move !!!
>
>CMX_SKR on a P4-2.4 needs 2:42 to see that Qg3 draws:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/4	-2.01	1838		1.Qxb4 Rxb4 2.Rc7+ Kf8 3.Ra7 Rb2
>					4.Rxa4 Rxf2
>0:00	1/4	-1.96	4819		1.Rc7+ Kg8 2.Rc8+ Kf7 3.Rc7+ Ke6
>					4.Rc6+ Kd5 5.Qxb4 Rxb4 6.Rxh6
>0:00	1/5	-1.98	13854		1.Rc7+ Kf6 2.Rc6+ Ke7 3.Qxb4+ Rxb4
>					4.Rxh6 a3
>0:00	1/6	-1.97	48539		1.Rc7+ Kg8 2.Qxb4 Rxb4 3.Ra7 Rb2
>					4.Rxa4 Rxf2
>0:00	2/7	-1.83	129456		1.Rc7+ Kg8 2.Qa2+ Rb3 3.Qc2 Qd4
>					4.Qc6 Qe5+ 5.g3 a3
>0:01	2/8	-1.76	358626		1.Rc7+ Kg8 2.Qa2+ Qb3 3.Qd2 Qd1
>					4.Qa2+ Rb3 5.Ra7 a3 6.Ra8+ Kf7
>					7.Rxa3
>0:06	2/9	-1.39	1386329		1.Rc7+ Kg8 2.Rc8+ Kf7 3.Qg3 f4
>					4.Qg4 Qe7 5.Qh5+ Kf6 6.Qxh6+ Ke5
>					7.Qc6
>0:16	3/10	-1.46	3545586		1.Rc7+ Kf6 2.Rc6+ Ke5 3.Qa2 Rb3
>					4.Rxh6 a3 5.Rg6 Qc3 6.Rxg5 Ke6
>0:58	3/11	-1.14	12616738	1.Rc7+ Kg8 2.Qg3 Rd1 3.Rc8+ Kf7
>					4.Qc7+ Qe7 5.Qc4+ Kg6 6.Rc7 Rd7
>					7.Rc6+ Kh7 8.Qb5 f4 9.Qxa4
>1:07	3/11	-0.68	14690259	1.Qg3 f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Qd7+
>					Qe6 8.Qxa4
>1:20	3/12	-0.77	17531800	1.Qg3 f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Rc5+
>					Kf6 8.Qh8+ Kf7 9.Rc8
>2:42	4/13	0.00	35290881	1.Qg3 f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Qe7
>					Qe6 8.Qh7+ Qg6
>
>>So what we really need to know whats the best move for Black in the position
>>below.
>>
>>[D]2R5/6k1/7p/5pp1/pq2p3/6QP/5PPK/1r6 b - - 5 1
>
>f4 is clearly the best move, but it still loses:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/4	-2.42	6210		1...f4 2.Qc3+ Qxc3 3.Rxc3 Rb2 4.Ra3
>0:00	1/5	-2.30	18398		1...f4 2.Qc3+ Qxc3 3.Rxc3 Rb2 4.Ra3
>					Rxf2 5.Rxa4
>0:00	1/6	-2.12	59278		1...f4 2.Qg4 Qe7 3.Qf5 Rf1 4.Rc2
>0:00	2/7	-2.37	125126		1...f4 2.Rc7+ Kf6 3.Rc6+ Ke5 4.Qg4
>					Qe7 5.Qc8 h5
>0:00	2/8	-2.04	190354		1...f4 2.Rc7+ Kf6 3.Rc6+ Ke5 4.Qg4
>					Qe7 5.Rxh6 Rb2 6.Qd1
>0:01	2/9	-2.08	342335		1...f4 2.Rc7+ Kf6 3.Rc6+ Ke5 4.Qg4
>					Qe7 5.Rxh6 Rb2 6.Qd1 a3
>0:05	3/10	-0.90	1232047		1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Qd7+
>					Qe6 8.Qxa4
>0:09	3/11	-0.98	2320553		1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Rc5+
>					Kf6 8.Qh8+ Kf7 9.Qe5
>0:26	3/12	0.00	5852295		1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Qe7
>					Qe6 8.Qh7+ Qg6
>1:00	4/13	0.00	13640620	1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					Rb6 5.Qh8+ Kf5 6.Qh7+ Qg6 7.Qe7
>					Qe6 8.Qh7+ Qg6
>4:23	5/14	1.10	55358106	1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					f3+ 5.g3 Rb2 6.Qh8+ Ke6 7.Qxh6+
>					Kd5 8.Qxg5+ Ke6 9.Qg6+ Ke5 10.Qg7+
>					Ke6 11.Qxb2 Qxc7 12.Qa2+ Kf5 13.Qxa4
>13:49	6/15	1.61	170989158	1...f4 2.Rc7+ Kf6 3.Qg4 Qd6 4.Qc8
>					f3+ 5.g3 Rb2 6.Qh8+ Ke6 7.Qxh6+
>					Kd5 8.Qxg5+ Ke6 9.Qg6+ Ke5 10.Qe8+
>					Kd5 11.Rd7 Rxf2+ 12.Kg1 Rg2+ 13.Kf1
>					Qxd7 14.Qxd7+ Ke5
>
>jm

Ruffian concurs. An interesting position. Black would be better off with the e5
pawn removed from the board when Black could draw very easily.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.