Author: Koundinya Veluri
Date: 08:40:53 11/06/03
Go up one level in this thread
On November 06, 2003 at 04:51:38, José Carlos wrote:
> This position is easy, but interesting:
>
>[D]r2qk2r/pp3ppp/2pbpn2/4Nb2/PnBP2P1/2N1P3/1P3P1P/R1BQ1RK1 b kq g3 0 1
>
> Black plays Ng4 with big advantage.
> Anubis (complex qsearch) finds it in iteration 8, while Averno (simple
>qsearch) needs 12. Studying what the program was searching in qsearch in this
>position has been very interesting for me.
> How does your program here?
King of Kings finds it at ply 2. It just does the usual checks in qsearch with
some see pruning, nothing special. I think the eval might be helping here. My
eval is probably biased for Nxg4.
1 -294 3 18 a6 gxf5
1 -293 4 36 [+=] g6 gxf5 gxf5
1 -272 4 55 g6 gxf5 gxf5
1 -271 4 119 [+=] b5 gxf5 bxc4 fxe6
1 -74 4 167 b5 gxf5 bxc4 fxe6
1 -73 4 322 [+=] Bxe5 dxe5
1 57 4 332 Bxe5 gxf5
1 57 4 380 Bxe5 gxf5
2 5 4 735 Bxe5 gxf5 Bd6 fxe6
2 6 6 995 [+=] Nxg4 Nxg4
2 108 6 1096 Nxg4 Nxg4 Qh4
2 108 6 1587 Nxg4 Nxg4 Qh4
3 131 6 2333 Nxg4 Nxg4 Qh4 h3 Qxh3
3 131 7 4154 Nxg4 Nxg4 Qh4 h3 Qxh3
4 131 7 6255 Nxg4 Nxg4 Qh4 h3 Qxh3
4 131 9 9380 Nxg4 Nxg4 Qh4 h3 Qxh3
5 108 11 14260 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5
5 108 14 23996 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5
6 132 18 37340 Nxg4 Nxg4 Qh4 h3 Nc2 Ra2 Qxh3
6 132 23 55920 Nxg4 Nxg4 Qh4 h3 Nc2 Ra2 Qxh3
7 129 34 88024 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Rd8
7 129 53 145694 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Rd8
8 125 81 230626 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Bg4
Ne4
8 125 153 455002 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Bg4
Ne4
9 135 206 620427 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Bg4
Be2 Kf7
9 135 300 895669 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 Nf3 Bg4
Be2 Kf7
10 117 495 1496423 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 Qh4 Be2 f6
e4 Bxe4 Nxe4 Qxe4
10 117 1000 3011320 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 Qh4 Be2 f6
e4 Bxe4 Nxe4 Qxe4
11 164 1353 4154934 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 e4 fxe5
exf5 exd4 f4 e5 Ne4
11 164 1664 5117537 Nxg4 Nxg4 Qh4 h3 Qxh3 Ne5 f6 e4 fxe5
exf5 exd4 f4 e5 Ne4
Regards,
Koundinya
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