Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How long to find White's winning move?

Author: John Merlino

Date: 08:40:18 01/03/02

Go up one level in this thread


On January 03, 2002 at 04:41:30, Uri Blass wrote:

>On January 03, 2002 at 03:44:24, William Sprague wrote:
>
>>On January 02, 2002 at 19:51:17, John Merlino wrote:
>>
>>>On January 02, 2002 at 18:29:56, Roy Eassa wrote:
>>>
>>>>How long does it take your program/engine to find White's winning move (and to
>>>>achieve a score that shows the program understands that White is winning)?
>>>>
>>>>[D] r4b1k/pp3Ppp/n1p5/2q1B3/2r5/6RP/PP2Q1P1/5R1K w - - 0 1
>>>
>>
>>
>>John - I found it on CM-8000 using a P4 @ 1.3 gig
>>
>>Time	Depth	Score	Positions	Moves
>>0:00	1/3	-2.31	2167		1. Rd3 Rc2 2. Qe1 Nb4
>>0:00	1/3	-2.14	2753		1. Re3 Rc2 2. Qd3 Nb4
>>0:00	1/4	-2.07	15833		1. Re3 Rc2 2. Qd3 Nb4 3. Qb3
>>0:00	1/4	-1.99	32362		1. Rb3 Rc2 2. Qe4 b6 3. Rd3
>>0:00	1/4	-1.78	38779		1. Rg5 Rc2 2. Qd3 Rxb2 3. Bxg7+
>>					Bxg7 4. Rxc5 Nxc5
>>0:00	1/5	-1.78	63783		1. Rg5 Rc2 2. Qd3 Rxb2 3. Bxg7+
>>					Bxg7 4. Rxc5 Nxc5
>>0:01	1/5	-0.56	143809		1. Re3 Rb8 2. Bxb8 Nxb8 3. Re8 Nd7
>>0:01	1/6	-0.65	189549		1. Re3 Rb8 2. Bxb8 Nxb8 3. Rb3
>>					Rc2 4. Qe6
>>0:02	1/6	-0.60	333708		1. Rg5 Rc2 2. Qd1 Rf2 3. Bxg7+
>>					Bxg7 4. Rxc5 Rxf1+ 5. Qxf1 Nxc5
>>0:05	1/7	-0.37	600219		1. Rg5 Rc1 2. Bxg7+ Bxg7 3. Rxc5
>>					Rxf1+ 4. Qxf1 Nxc5 5. Qc4 b6
>>0:07	1/7	0.00	869620		1. Re3 Rb8 2. b3 Rb4 3. Bxb8 Nxb8
>>					4. a3 Rd4 5. Re8
>>0:14	1/8	0.42	1845104		1. Re3 Rb8 2. Rf5 Rc2 3. Bxg7+
>>					Bxg7 4. Rxc5 Rxc5 5. Re8+ Bf8 6.
>>					Qg4 Rc1+ 7. Kh2
>>0:31	1/9	0.30	4295215		1. Re3 Rc1 2. Bxg7+ Bxg7 3. Re8+
>>					Bf8 4. Rxa8 Rxf1+ 5. Qxf1 Kg7 6.
>>					Qf4 Nb4 7. Rb8 Qe7 8. a3 Nd5
>>1:38	1/9	2.36	13147444	1. b4 Rxb4 2. Rg5 h6 3. Qh5 Qxe5
>>					4. Rxe5 Rd8 5. Re8 Rbd4 6. Qe2
>>					Nc5 7. Rxd8 Rxd8
>>
>>Bill
>
>It seems that John marlino always insist to use the the default personality that
>is not good for solving test suites.
>
>I believe based on experience that bigger selectivity is better for chessmaster
>in most of the cases when tactics is involved and this is the reason that I
>always use ss=10 in chessmaster6000(I have not chessmaster8000 and I cannot
>increase the selectivity for more than 10 in chessmaster6000).
>
>Uri

You are correct; I do always use the default personality (with the exception of
using a 32MB hash table). This is easier for me, and is also easier for other CM
users to duplicate (or test their processor/favorite personality against).

If I used a custom personality, I would feel obliged to also post that
personality's settings (as I wish other people would do when they post their CM
findings), and I am just too lazy to do that every time. ;-)

jm



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.