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Subject: Re: Test Position - Avoid Nxa8

Author: Tom Likens

Date: 21:39:03 11/29/02

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On November 29, 2002 at 15:45:51, bobby palacios wrote:

>[D] r1b2b1r/ppNk3p/2n4q/3pp3/4n1pB/8/PPP2PPP/R2QKBNR w KQ - 0 13
>
>A very interesting position aroused between Aristarch 4.4 vs TheKing 3.12(game
>in 25).  After a wild opening, TheKing 3.12 went straight for Aristarch's king,
>at this critical point Aristarch took the rook at a8, instead of the pawn at d5,
>and was crushed.  How many programs avoid Nxa8 at a reasonable time?  (Aristarch
>played Nxa8 after 35 seconds)

Djinn (my own humble effort) gives this PV after a few seconds:

 2  00:00:00   3.28  1. Nxa8 Qxh4 2. Qxd5+H Nd6 <HT>
 3  00:00:00   3.28  1. Nxa8 Qxh4 2. Qxd5+ Nd6
 4  00:00:00   3.43  1. Nxa8 Qxh4 2. Qxd5+ Nd6 3. Bb5
 5  00:00:00   3.32  1. Nxa8 Qxh4 2. Qxd5+ Nd6 3. Bb5 Bg7
 6  00:00:00   -.--  1. Nxa8 Qxh4 2. Qxd5+ Nd6 3. Bb5 Bg7
 6  00:00:00   2.16  1. Nxa8 Bb4+ 2. c3H Nxc3H 3. Nb6+H Ke8H
                     4. bxc3H Bxc3+H 5. Ke2H Nd4+H 6. Kd3H axb6H
                     7. Kxc3H Qxh4 <HT>
 7  00:00:03   1.77  1. Nxd5 Nd4 2. Qxg4+ Kd6 3. Qxe4 Bf5 4. Bg5 Bxe4
                     5. Bxh6H Bxh6 <HT>
 8  00:00:05   1.18  1. Nxd5 Nd4 2. c3 Qxh4 3. g3 Qd8 4. Qxg4+ Kc6
                     5. Qxe4 Qxd5 6. Qxd5+ <HT>
regards,
--tom



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