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Subject: Re: Mate in 10

Author: William Sprague

Date: 11:08:50 01/19/02

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On January 19, 2002 at 03:50:40, Matthias Gemuh wrote:

>
>How long does your program take?
>Yace, Goliath Light, Nimzo, Comet and CM8000 need only seconds !!
>What of Shredder, Tigers, Junior, Hiarcs and Fritz?
>
>[D]5r2/r3Npkp/3pn1p1/qbnNp2P/1p2P3/5P2/PP1QB1P1/1KR4R w - - 0 1
>
>HyLogicChess needs 51 minutes :( on an Athlon 1.4 GHz, 32 MB Hash.
>Looks like I must go optimizing extensions again.
>
>[1] (0.90)  1.Bxb5 (00h:00m:00s)
>[2] (0.91)  1.h6 Kh8 2.Bxb5 (00h:00m:00s)
>[3] (0.91)  1.h6 Kh8 2.Bxb5 Qxb5 (00h:00m:00s)
>[4] (1.30)  1.h6 Kh8 2.Bxb5 Qxb5 3.Rhd1 (00h:00m:00s)
>[5] (0.77)  1.b3 Bxe2 2.Qxe2 Raa8 3.g3 (00h:00m:01s)
>[6] (-0.54)  1.h6 Kh8 2.Nxb4 Bxe2 3.Qxe2 Rxe7 4.Nc6 Nd4 (00h:00m:12s)
>[7] (0.24)  1.b3 Nxb3 (00h:00m:32s)
>[8] (0.90)  1.Bc4 Nxe4 2.h6 Kh8 3.fxe4 Bxc4 4.Nxb4 d5 5.exd5 (00h:01m:07s)
>[9] (0.66)  1.Nxb4 Bxe2 2.Qxe2 Rxe7 3.Nd5 Rd7 4.b4 Nd4 5.bxa5 (00h:02m:38s)
>[10] (2.03)  1.Bc4 gxh5 2.Qxb4 Qxb4 3.Nf5 Kg8 4.Nxb4 Bxc4 5.Rxc4 Rd8
>(00h:10m:26s)
>[11] (6.39)  1.Bc4 Kh8 2.Qh6 (00h:33m:53s)
>[12] (+Mate in 10)  1.Qh6 Kxh6 2.hxg6 Kg5 3.Rh5 Kxh5 4.f4 Bxe2 5.Nf6 Kh6 6.Rh1
>Bh5 7.Rxh5 Kg7 8.Ne8 Rxe8 9.Rxh7 Kf6 10.Rxf7 (00h:51m:14s)
>
>Regards,
>Matthias.

CM-8000 running on a P4 at 1.3 gig with 1 meg hash found the mate in 10 in 3
seconds.

Time	Depth	Score	Positions	Moves
0:03	1/8	Mate10	380052		1. Qh6+ Kxh6 2. hxg6+ Kg5 3. Rh5+
					Kxh5 4. f4+ Bxe2 5. Nf6+ Kh6 6.
					Rh1+ Bh5 7. Rxh5+ Kg7 8. Ne8+ Rxe8
					9. Rxh7+ Kf6 10. Rxf7#
0:13	1/9	Mate10	962301		1. Qh6+ Kxh6 2. hxg6+ Kg5 3. Rh5+
					Kxh5 4. f4+ Bxe2 5. Nf6+ Kh6 6.
					Rh1+ Bh5 7. Rxh5+ Kg7 8. Ne8+ Rxe8
					9. Rxh7+ Kf6 10. Rxf7#

I realize that some Athlons maybe faster but I am well please with this result
on this 1.3 machine.

Bill




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