Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Easy mate to solve...

Author: F. Huber

Date: 10:42:27 09/02/03

Go up one level in this thread


On September 01, 2003 at 22:26:04, Slater Wold wrote:

>On September 01, 2003 at 22:25:48, Slater Wold wrote:
>
>>On September 01, 2003 at 17:25:11, leonid wrote:
>>
>>>On August 31, 2003 at 23:27:53, Slater Wold wrote:
>>>
>>>>Can you beat Ruffian's time?  (P4 3.06Ghz - 100MB HTs)  I am curious to see CM9k
>>>>results.
>>>>
>>>>[D]8/1P1bp1kp/3P1p2/R7/4Pb2/5P2/4KR2/6q1 b - - 0 44
>>>
>>>
>>>Above position is good but just too long to ponder for my program that have no
>>>cash and is run on slow computer. For those that do like, as me, to solve
>>>something simple and easy, please try my variation.
>>>
>>>This new position is the old one with few new pieces that jumped on board.
>>>
>>>[D]5r2/1PPbp1kp/3P1p1N/R1N4Q/2pBPbr1/n4P1B/4KR2/4n1q1 w - - 0
>>>
>>>Hahaha! Only now I found why my program was so slow. I missed the fact that
>>>before it was the blacks side that mate whites.
>>>
>>>Please indicate Your result for last position.
>>>
>>>Leonid.
>>
>>Ruffian 1.0.5 - P4 3.06Ghz - 200MB HTs
>>
>>00:00:00.0	8.74	1	99	b8Q Bxd6
>>00:00:00.0	9.06	1	204	fxg4
>>00:00:00.0	11.37	2	10969	fxg4 Nac2
>>00:00:00.1	11.29	3	54538	fxg4 Be8 Ne6+ Kh8 dxe7 Rg8 b8Q Bxh5 Qxg8#
>>00:00:00.1	11.95	3	63359	b8Q Rxb8 cxb8Q Bxd6 fxg4 Bxb8 Nxd7
>>00:00:00.1	11.95	4	93531	b8Q Rxb8 cxb8Q Bxd6 fxg4 Bxb8 Nxd7
>>00:00:00.3	15.08	4	212825	dxe7 Rg8 Bxf6+ Kxf6 Nxd7+ Kg7 b8Q Bxh6 Bxg4
>>00:00:00.8	19.96	5	965898	dxe7 Qxf2+ Kxf2 Bg3+ Kf1 Re8 Bxf6+ Kxf6 Nxd7+ Kxe7
>>Qf7+ Kd6 c8Q
>>00:00:01.1	23.61	6	1295605	dxe7 Qxf2+ Kxf2 Bg3+ Kf1 Rg8 Bxf6+ Kxf6 Nxd7+ Kxe7
>>Nxg8+ Rxg8 c8Q Rg6
>>00:00:01.5	23.96	7	1686134	dxe7
>>00:00:03.9	38.20	7	5422485	dxe7 Qxf2+ Kxf2 Nd3+ Nxd3 Rg2+ Bxg2 Bg3+ Kxg3 Be8
>>Qg4+ Bg6 exf8Q+ Kxf8 b8Q+ Kg7 c8Q cxd3
>>00:00:04.5	38.55	8	6254900	dxe7
>>00:00:05.5	 Mate in 9	8	7979316	dxe7 Qxf2+ Kxf2 Nd3+ Nxd3 Bg3+ Kf1 Be8 exf8Q+
>>Kxf8 Qxe8+ Kxe8 b8Q+ Ke7 Qd8+ Ke6 c8Q#
>>00:00:16.8	 Mate in 8	9	26602759	dxe7 Rf7 Qxf7+ Kxh6 Qxf6+ Kh5 Bxg4+ Qxg4 Nxd7+
>>Nb5 e8Q+ Qg6 Rxb5+ Bg5 Rh2#
>
>
>00:00:26.8	 Mate in 7	10	42593778	dxe7 Rf7 c8Q Bxh6 Qf8+ Rxf8 exf8Q+ Kxf8 b8Q+
>Ke7 Bxf6+ Kxf6 Qbe5#
>00:00:36.9	 Mate in 7	11	59836743	dxe7 Rf7 c8Q Bxh6 Qf8+ Rxf8 exf8Q+ Kxf8 b8Q+
>Ke7 Bxf6+ Kxf6 Qbe5#

Hi Slater,

there must be something wrong with Ruffians ´Mate in 7´ -
it is definitely only a mate in 8!

Here´s the analysis of Chest:

ChestUCI Ver.2.7  UCI:

CPU: Celeron 400MHz
FEN: 5r2/1PPbp1kp/3P1p1N/R1N4Q/2pBPbr1/n4P1B/4KR2/4n1q1 w - -
Search for Mate in 10 ...  (Hash=64MB)
Mate in 8 found !  (2 Solutions in 09:16)
D8  09:21  M8  d6xe7 Qg1xf2 Bd4xf2 Rf8g8 c7c8Q Bd7xc8 b7xc8Q Rg8xc8 Nc5e6 Kg7h8
e7e8Q Rc8xe8 Qh5xe8 Rg4g8 Nh6f7
D8  09:21  M8  b7b8Q Bd7c8 Nc5e6 Kg7h8 d6xe7 Bf4d6 e7xf8Q Bd6xf8 Qb8xc8 Qg1f1
Rf2xf1 Na3b1 Qc8xf8 Rg4g8 Qf8xg8

(Btw, with a faster CPU of today the solution time would be less than 2 min.)

Regards,
Franz.



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.