Author: Christophe Theron
Date: 10:48:38 12/11/00
Go up one level in this thread
On December 11, 2000 at 07:45:46, Enrique Irazoqui wrote:
>[D]1r4qk/4Q1p1/5p1p/4pP2/pP5P/8/1P4P1/3R2K1 w
>
>Analyzing this position posted by Chen, Gambit Tiger sees the drawing b5 at ply
>13, -0.22, but 2 iterations later it switches to Rd7 even if it evaluates this
>move as -1.10, worse than b5. I have seen this other times too. Why is Gambit
>Tiger doing that?
>
>Enrique
>
>00:00:00.3 -0,34 7 123745 Rd7 Re8 Qc5 Qb3 Qc3 Qxc3 bxc3 Rc8
>00:00:00.5 -0,34 8 169859 Rd7 Re8 Qc5 Qb3 Qc3 Qxc3 bxc3 Rc8 Ra7 Rxc3 Rxa4
>00:00:01.0 -0,60 9 500265 Rd7 Re8 Qc5 Qb3 Ra7 Qxb2 Rxa4 Qb1+ Kh2 Qxf5
>00:00:06.4 -0,60 10 1645814 Rd7 Re8 Qc5 Qb3 Ra7 Qxb2 Rxa4 Qb1+ Kh2 Qxf5 Ra7
>00:00:09.5 -0,58 10 2530646 Qc7 Rc8 Qd7 Qc4 Qe6 Qc2 Ra1 Rd8 Qe7 Rd2
>00:00:12.7 -0,86 11 3461939 Qc7 Rc8 Qd7 Qc4 Qb7 Kh7 Rd7 Qc1+ Kh2 Qf4+ Kh3 Qxf5+
>g4 Qf1+ Qg2
>00:00:13.6 -0,82 11 3722276 Rd7 Re8 Qc5 Qb3 Ra7 Qxb2 Rxa4 Qb1+ Kh2 Qxf5 b5 Rc8
>00:00:26.5 -0,96 12 7284762 Rd7 Re8 Qc5 Qb3 Ra7 Qd1+ Kh2 Qg4 g3 Rd8 Qc2 Qxb4
>Rxa4
>00:01:23.6 -1,06 13 22947585 Rd7 Re8 Qd6 Qa2 Qd2 Qb1+ Kh2 Qxf5 b5 Qg4 g3 Rb8 Rd5
>Rb6
>00:03:17.0 -0,22 13 54439711 b5 Qb3 Rd8+ Rxd8 Qxd8+ Kh7 Qe8 Qe3+ Kh1 Qc1+ Kh2
>Qf4+ Kg1 Qxf5 h5 Qb1+ Kh2 Qxb2
>00:04:42.9 -0,22 14 78462887 b5 Qb3 Rd8+ Rxd8 Qxd8+ Kh7 Qe8 Qe3+ Kh1 Qc1+ Kh2
>Qf4+ Kg1 Qxf5 h5 Qb1+ Kh2 Qxb2
>00:07:34.9 -1,10 15 126099869 Rd7 Re8 Qd6 Qc4 Rc7 Qxh4 b5 Qd4+ Qxd4 exd4 b6 d3
>Rd7 Rb8 b7 d2 Rxd2 Rxb7 Kf2
Well... I don't know! Apparently b5 has a fail-low at ply depth 15, and Rd7 is
chosen instead.
I am investigating this, maybe I'll post about this later...
Christophe
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