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Subject: Re: Interesting position from Guenther Simon's RWBC

Author: Anthony Cozzie

Date: 16:42:51 02/20/04

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On February 20, 2004 at 16:59:44, Tim Foden wrote:

>Here is a position that occured between ZCHess 2.22 and Deep Sjeng 1.5 (ZChess
>was white).
>
>Most engines (well the one's we tested anyway!) don't like white here, but
>ZChess went on to win.
>
>[D]2r3k1/R4p2/1p2p1pp/1b1nQ3/3P3P/3q1PN1/5BP1/6K1 w - - 0 1
>
>The plan for white of Ne4 Kh2! Be1! Bd2 looks to win every time.  Any other
>engines see the win for white here?
>
>(for the game see Guenther's site http://home.t-online.de/home/g.simon.rgbg/)
>Cheers, Tim.

It takes a while, but here you go.  Zappa prefers Be3-d2 over Be1-d2, but
otherwise it is the correct plan, and with a reasonable plus score as well.
Branching factor of *7* from 13->14 ply though :(

1. Ng3-e4 Rc8-f8 2. Kg1-h2 h6-h5 3. Bf2-g3 Qd3-c2 4. Bg3-f4 Bb5-f1 5. Bf4-d2
Qc2-b2 6. Kh2-g1 Qb2-b1 7. Bd2-h6 Bf1-e2 8. Kg1-h2
 = (-0.50)	Depth: 13/27	00:01:54.32	108306kN
1. Ng3-e4++
 + (-0.25)	Depth: 14/28	00:05:14.44	300698kN
1. Ng3-e4 Qd3-f1 2. Kg1-h2 Bb5-e8 3. Bf2-e3 Rc8-c2 4. Be3-d2 Rc2xd2 5. Ne4xd2
Qf1-f2 6. Ra7-a8 Qf2xh4 7. Kh2-g1 Qh4-e7 8. Nd2-c4 f7-f6 9. Qe5-d6
 = (0.51)	Depth: 14/28	00:15:18.86	884816kN
1. Ng3-e4 Qd3-f1 2. Kg1-h2 Bb5-e8 3. Bf2-e3 Rc8-c2 4. Be3-d2 Rc2xd2 5. Ne4xd2
Qf1-f2 6. Ra7-a8 Qf2xh4 7. Kh2-g1 Qh4-e7 8. Nd2-c4 f7-f6 9. Qe5-b8 Nd5-c7
 = (0.66)	Depth: 15/30	00:26:44.89	1547890kN

anthony



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