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Subject: Re: Test position (null-move)

Author: John Merlino

Date: 11:35:01 06/27/04

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On June 27, 2004 at 14:01:35, Mike Byrne wrote:

>On June 27, 2004 at 13:47:57, Ernst Walet wrote:
>
>>On June 27, 2004 at 12:43:58, John Merlino wrote:
>>
>>>On June 27, 2004 at 10:03:15, Vincent Lejeune wrote:
>>>
>>>>a position from the crafty mailing-list
>>>>
>>>>[d]8/3p4/3P2p1/7p/3B3k/3q1P2/4N1P1/7K w - -
>>>>1.Bf6 g5 2.Kh2! win material by forced mate !
>>>
>>>CM_SKR on a P4-2.4 shows the win in 0:22.
>>>
>>>Time	Depth	Score	Positions	Moves
>>>0:00	1/5	-1.77	14372		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Bh6 Qd5 6.Kh2
>>>0:00	1/6	-1.75	27142		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Be7 Kg6 6.Kh2 Qe3
>>>0:00	1/7	-1.76	51813		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Bh6 h4
>>>					7.g4+ hxg3ep+ 8.Kxg3
>>>0:00	1/8	-1.76	86499		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Bh6 h4
>>>					7.g4+ hxg3ep+ 8.Kxg3
>>>0:00	1/9	-1.72	156046		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Kg6 6.Bf6 Qd5
>>>					7.Be7 Qe5+ 8.g3 Kf5
>>>0:01	1/10	-1.77	341708		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Kg6 6.Be7 Qe3
>>>					7.Bg5 Qd4 8.Be7
>>>0:02	2/11	-1.75	670073		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Be7 Kg6
>>>					7.Kg1 Qe5 8.g3 Qb2 9.Kf1
>>>0:05	3/12	-1.78	1348532		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Be7 Kg6
>>>					7.g3 Qa2+ 8.Kh3 Qe2 9.Ng5 Qf1+
>>>					10.Kh2
>>>0:10	4/13	-1.75	2813590		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Be7 Kg6
>>>					7.Bf6 Qf7 8.Kg3 Kf5 9.Kh4 Qg6 10.Bg5
>>>0:22	5/14	3.42	6225385		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>>					4.gxf3 Kf5 5.Ng3+ Kg5 6.Ne4+ Kf5
>>>					7.Kg3 Ke5 8.Kh4 Kf4 9.Kxh5 Kxf3
>>>					10.Nc5
>>>0:38	6/15	3.77	11134857	1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>>					4.gxf3 Kf5 5.Ng3+ Kf4 6.Ne4 Kxf3
>>>					7.Nf6 Kf4 8.Nxd7 Kf5 9.Nc5 Kf6
>>>					10.Kg3
>>>1:10	7/16	3.83	21377081	1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>>					4.gxf3 Kf5 5.Ng3+ Ke5 6.Ne4 Kf4
>>>					7.Kg2 h4 8.Kh3 Kxf3 9.Nc5 Kf4 10.Nxd7
>>>					Kg5 11.Ne5
>>>
>>>jm
>>
>>
>>The King 3.33 personal settings (ss=14, ks=150) 8 seconds on a AthlonXP@2200
>>needs 8 seconds.
>>
>>Time	Depth	Score	Positions	Moves
>>0:00	3/9	-1.81	163868		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Kh3 Kg6
>>					7.g4 hxg4+ 8.Kxg4
>>0:00	3/10	-1.77	306736		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Be7 Qe5+
>>					7.g3 Qb5 8.Kg2 Qe2+ 9.Nf2
>>0:01	3/11	-1.79	649818		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>					4.Bxg5+ Kf5 5.Kh2 Qb5 6.Be7 Kg6
>>					7.Ng5 Qe5+ 8.g3 Qe2+ 9.Kh3 Qf1+
>>					10.Kh2
>>0:03	4/12	-1.78	1364264		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>>					4.Bxg5+ Kf5 5.Kh2 Qb5 6.Be7 Kg6
>>					7.Ng5 Qe5+ 8.g3 Qe2+ 9.Kh3 Qf1+
>>					10.Kh2 Kf5
>>0:08	5/13	3.27	3219782		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>					4.gxf3 Kf5 5.Ng3+ Kf4 6.Nxh5+ Ke5
>>					7.f4+ Kxd6 8.f5 Ke5 9.f6 Ke6 10.Kg3
>>0:13	6/14	3.35	5956526		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>					4.gxf3 Kf5 5.Ng3+ Kf6 6.Nxh5+ Ke5
>>					7.Kg3 Kxd6 8.Kf4 Kc5 9.Nf6 d5 10.Ke3
>>0:26	7/15	3.56	11834085	1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>					4.gxf3 h4 5.Kh3 Kf5 6.Nc3 Kf4 7.Ne4
>>					Kxf3 8.Nf6 Kf4 9.Nxd7 Kg5
>>0:52	8/16	3.75	24465448	1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>					4.gxf3 h4 5.Kh3 Kf5 6.Nc3 Kf4 7.Ne4
>>					Kxf3 8.Nf6 Kf4 9.Nxd7 Kg5 10.Ne5
>>1:45	9/17	4.15	50644505	1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>>					4.gxf3 h4 5.Kh3 Kf5 6.Nc3 Kf4 7.Ne4
>>					Kxf3 8.Nf6 Kf4 9.Nxd7 Kg5 10.Ne5
>>					Kh5
>>
>>Ernst.
>
>Cm10K with standard CM9K settings needs 1 second
>
>Time	Depth	Score	Positions	Moves
>0:00	2/3	-3.98	1838		1.Bf6+ g5 2.Nd4 Kg3 3.Be5+ Kf2
>0:00	2/3	-3.84	2568		1.Bf2+ Kg5 2.Nd4 Qf1+ 3.Bg1 Qc4
>0:00	3/4	-3.75	5103		1.Bf2+ Kg5 2.Ng3 Kf4 3.Ne4 Ke5
>0:00	3/4	-3.39	11119		1.Bf6+ g5 2.Nc3 Qd2 3.Ne4 Qe1+
>					4.Kh2
>0:00	3/5	-1.85	16934		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>					4.Bxg5+ Kf5 5.Bh6 Qd5
>0:00	3/6	-1.82	36114		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Bh6
>0:00	4/7	-1.88	84014		1.Bf6+ g5 2.Nc3 Kg3 3.Ne4+ Kf4
>					4.Bxg5+ Kf5 5.Kh2 Qd5 6.Bh6 h4
>0:01	5/8	3.07	200150		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>					4.gxf3 Kf5 5.Kg3 Ke5 6.Nf4 Kxd6
>					7.Nxh5
>0:02	6/9	3.16	406917		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>					4.gxf3 Kf5 5.Kg3 Ke5 6.Kh4 Kxd6
>					7.Kxh5
>0:04	7/10	3.18	872756		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>					4.gxf3 Kf5 5.Ng3+ Ke5 6.Ne4 Kf4
>					7.Nf6 Ke5 8.Nxd7+ Kxd6
>0:10	8/11	3.18	1968275		1.Bf6+ g5 2.Kh2 Qxf3 3.Bxg5+ Kxg5
>					4.gxf3 Kf5 5.Ng3+ Ke5 6.Ne4 Kf4
>					7.Nf6 Ke5 8.Nxd7+ Kxd6

Confirmed. On my machine, the CM9 version sees it in 0:08, but the CMX version
sees it in 0:04. Very nice! Chalk one up for the new engine.... :-)

jm



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