Author: Tord Romstad
Date: 13:04:04 12/03/03
Go up one level in this thread
On December 03, 2003 at 15:30:17, Art Basham wrote:
>[D]3r1rk1/pp3bpp/1q1b1p2/3p4/QP2p1B1/2P1P3/P2N1PnP/RN3K1R b - - 0 1
>
>Today in a game on the internet I played ....Nxe3+ and went on to win.
>
>Is this a "good test move" or what..??
>
>Maybe I was just "lucky"...:-)
>
>I wonder if any of your fast chess programs out there find this one... Thanks...
>If so, what was the ply? So far, none of my programs can find it.
I don't know about fast programs, but my very slow Gothmog (which loves
to sacrifice) chooses Nxe3 at ply 1, rejects it a ply 2, and switches back
to Nxe3 and keeps it at ply 3 after 0.03 seconds on a Pentium IV 2.4 GHz.
According to Gothmog, Nxe3 is clearly winning. The score is +4.34 for black
already at ply 3, and climbs to +5.06 after 12 plies:
1 4.64 0.00 92 Nxe3+ fxe3 Qxe3
2 3.70 0.01 1659 f5 Kxg2 fxg4
3 4.34 0.03 3093 Nxe3+ fxe3 Qxe3 Be2
4 4.16 0.07 5806 Nxe3+ fxe3 Qxe3 Be2
5 4.33 0.19 18696 Nxe3+ fxe3 Qxe3 Be2
6 4.27 0.45 48388 Nxe3+ fxe3 Qxe3 Rg1 Bxh2 Rg2
7 4.30 0.90 117098 Nxe3+ fxe3 Qxe3 Be2
8 3.78 4.48 763387 Nxe3+ fxe3 Qxe3 Be2 Bg6 Ke1
9 4.08 10.08 1717562 Nxe3+ fxe3 Qxe3 Be2 f5 Ke1 d4 Nf1 Qc1+
Qd1 Qxd1+ Bxd1 dxc3 Nxc3 Bxb4
10 4.19 26.59 4408110 Nxe3+ fxe3 Qxe3 Be2 f5 Ke1 d4 Nf1 Qc1+
Qd1 Qb2
11 4.69 1:02 10776553 Nxe3+ fxe3 Qxe3 Be2 f5 Ke1 d4 Nf1 Qc1+
Qd1 Qb2
12 5.06 4:07 40885049 Nxe3+ fxe3 Qxe3 Qd1 f5 Bf3 d4 Qe2 Be5 a4
exf3 Qxe3 dxe3
Tord
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