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Subject: Re: find the sac

Author: John Merlino

Date: 09:01:49 03/08/05

Go up one level in this thread


On March 08, 2005 at 00:13:51, Jon Dart wrote:

>From a recent Arasan game on ICC:
>
>[D] r1bb1rnk/1pq2ppp/p3p3/4P3/2nNBB2/2N3Q1/P1P3PP/3R1R1K w - -
>
>Bxh7 wins.

CMX Yoda v25 finds Bxh7 in 0:27 on a P4-2.4, but it needs over four minutes to
see that it leads to anything more than a draw:

Time	Depth	Score	Positions	Moves
0:00	1/4	-0.35	14164		1.Rf2 Be7 2.Qh3 h6
0:00	1/4	-0.25	15382		1.Bd3 Nb2 2.Qh3 Nxd3 3.Rxd3
0:00	1/4	-0.22	24143		1.Rde1 Be7 2.Bd3 Bd7
0:00	1/4	-0.20	25286		1.Nce2 Be7 2.Qh3 h6
0:00	1/5	-0.14	39535		1.Nce2 Be7 2.Qh3 h6 3.Qc3 Bh4
0:00	1/6	-0.21	105060		1.Nce2 h6 2.Qc3 Ne7 3.Nb3 Nf5
0:02	1/7	0.00	408963		1.Nce2 Be7 2.Qh3 h6 3.Qc3 Rd8 4.Nc6
					Rxd1 5.Rxd1
0:06	1/8	-0.08	1051928		1.Nce2 h6 2.Qc3 Ne7 3.Nb3 Nd5 4.Bxd5
					exd5 5.Rxd5 Be6
0:20	1/9	-0.10	3762621		1.Nce2 Re8 2.Qh3 h6 3.Qc3 Ne7 4.Nc6
					Nxc6 5.Qxc4 Kg8
0:27	1/9	0.00	4992802		1.Bxh7 Kxh7 2.Ne4 Nh6 3.Nf6+ Kh8
					4.Bxh6 gxh6 5.Qh3 Kg7 6.Qg3+ Kh8
0:48	1/10	0.00	9112273		1.Bxh7 Kxh7 2.Ne4 Nh6 3.Nf6+ Kh8
					4.Bxh6 gxh6 5.Qh3 Kg7 6.Qg3+ Kh8
4:25	1/11	1.56	52073612	1.Bxh7 Kxh7 2.Ne4 Qe7 3.Qd3 Kh8
					4.Qxc4 Qh4 5.Nd6 Bb6 6.Qb4 Qd8
					7.Bg5

jm



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