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Subject: Re: morphy's 17.QxB sac

Author: John Merlino

Date: 10:22:03 07/13/00

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On July 12, 2000 at 19:39:37, walter irvin wrote:

>i was testing several programs in paulsen vs morphy  where morphy made the great
>sac 17.  QxB .i tested several programs ,hiarcs 7.32 1 min 23 sec was the best
>.crafty 16.6 did it in 3 min 50 sec ,strangly crafty 17.10 never found it in 10
>mins .junior 6 never found it in 18 mins!!fritz6 never found it in 3 min .all
>this was on a 300 mhz 64 meg hash .in the actual game morphy used 20 min .

Chessmaster 7000 finds it in less than 1 second on a P3-600. After giving it a
reasonable amount of time to evaluate the position (35 seconds), the eval is
-1.61 for Black and the PV is:

1...Qxf3 2.gxf3 Rg6+ 3.Kh1 Bh3 4.Qd3 f5 5.Rd1 Bg2+ 6.Kg1 Bxf3+ 7.Kf1 Bxd1 8.Qc4+
Kh8 9.d4 Bf3 10.Be3 Bd5 11.Qe2 Bxa2 12.Qxa2

After one more ply (3:42, up to depth 4/10), the eval and PV are the same as
above.

jm



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