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Subject: Test position

Author: James Robertson

Date: 13:21:53 09/11/99


Today in a game with blik on FICS, my program reached the following position:

2r1r1k1/3p1p1p/p2Qp1p1/q1N2P2/Pn1B1P2/6P1/2P3bP/2KRR3 b - -

After about 3 seconds my program played ... Bf3?? which loses to Qe5. I ran my
program on the position after the game it only then did it realise that ...
Na2+! wins (and wins big).

It takes it 9.5 seconds to realise that, a little too slow for the game. Crafty
16.16 takes about 20 seconds to find ... Na2 (in the meantime it plays ... Rb8
which it says wins material) on the same hardware (P233, 4MB hash table).

Anyway, here is my program's output. What does your program say about the
position?

Depth  Score     Time       Nodes  PV
   1     -30        0         191  Qc7 Qxc7 Rxc7 fxe6 fxe6
   2     -30        0        1130  Qc7 Qxc7 Rxc7 fxe6 fxe6
   3       6       50        5768  Bf3 fxg6 Bxd1 Rxd1 hxg6 Qxd7
   4      19      220       22509  Bc6 Nxd7 Bxd7 Qxd7 Rxc2+ Kb1
   5>     70      660       66198  exf5 Rxe8+ Rxe8 Qxd7 Bc6 Qd6 Bxa4
   5      70      770       78189  exf5 Rxe8+ Rxe8 Qxd7 Bc6 Qd6 Bxa4
   6>     21     2800      301776  Bf3 Qe5 Na2+ Kb1 f6 Qxf6 Bxd1 Rxd1
   6      21     3620      392090  Bf3 Qe5 Na2+ Kb1 f6 Qxf6 Bxd1 Rxd1
   7>    168     9550     1062091  Na2+ Kb2 Qb4+ Kxa2 Bd5+ c4 Qxc4+ Kb1 Rb8+
				   Bb2 Qa2+ Kc1 Qxb2+
   7     168     9830     1099308  Na2+ Kb2 Qb4+ Kxa2 Bd5+ c4 Qxc4+ Kb1 Rb8+
				   Bb2 Qa2+ Kc1 Qxb2+
   8     260    12190     1392528  Na2+ Kb2 Qb4+ Kxa2 Bd5+ c4 Qxc4+ Kb1 Rb8+
				   Bb2 Qa2+ Kc2 Qxb2+ Kd3 Qxh2 fxg6 fxg6
   9     260    16260     1938555  Na2+ Kb2 Qb4+ Kxa2 Bd5+ c4 Qxc4+ Kb1 Rb8+
				   Bb2 Qa2+ Kc2 Qxb2+ Kd3 Qxh2 fxg6 fxg6
  10     390    31250     3854123  Na2+ Kb2 Qb4+ Kxa2 Bd5+ Qxd5 exd5 c3 Qc4+
				   Ka3 d6 Nb3 Rxe1 Rxe1 gxf5
  11     392    56680     7268592  Na2+ Kb2 Qb4+ Kxa2 Bd5+ Qxd5 exd5 c3 Qc4+
				   Ka3 Re2 Nb3 Rxh2 fxg6 hxg6 Re7




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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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