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Subject: Re: morphy's 17.QxB sac

Author: Dann Corbit

Date: 18:33:25 07/12/00

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By the way, that position is a standard test position from BS2830 and was
already a CAP data element:

[D] 4r1k1/p1pb1ppp/Qbp1r3/8/1P6/2Pq1B2/R2P1PPP/2B2RK1 b - - acd 16; acn
1566812955; ce 242; pv Qxf3 gxf3 Rg6+ Kh1 Bh3 Qd3 f5 Rd1 Bg2+ Kg1 Bxf3+ Kf1 Bxd1
Bb2 Rg4 h3 Rf4 Kg2 Rxf2+ Kg3 f4+ Kh4 Bb3 Ra3 Be6; pm Qxa6; bm Qxf3; id
"BS2830.01";

Crafty has found the answer here (although I don't know how long it spent to
find it but 1.5 billion nodes were examined).  Here is the aftermath position:

[D] 4r1k1/p1pb1ppp/Qbp1r3/8/1P6/2P2q2/R2P1PPP/2B2RK1 w - - acd 15; acn
165363242; ce -230; pv gxf3 Rg6+ Kh1 Bh3 Qd3 f5 Rd1 Bg2+ Kg1 Bxf3+ Kf1 Bxd1 Ra1
Be2+ Qxe2 Rg1+ Kxg1 Rxe2 d4 Rc2 Be3 Rxc3 h3 Rc2; pm gxf3; id "C.A.P. 1477824";

It's obviously much easier to find the right answer after the brilliancy has
already been executed.



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