Author: Stuart Cracraft
Date: 11:20:41 01/19/98
Go up one level in this thread
On January 19, 1998 at 00:05:42, Robert Hyatt wrote:
>Here's an interesting test position. This happened in a game on ICC
>tonite between Crafty and a human player (actually Halcion running
>Crafty if you try to find the game.)
>
>In this position, Bxe7 seems pretty natural, tactically. See if your
>program can find out in time that it is bad. This was a blitz game
>and Crafty didn't. Bxe7 fails to Nc4, although Crafty sees the entire
>line almost instantly, there is a tiny flaw at the end that makes this
>fall apart completely.
>
>here's the fen:
>
>2r3k/ppq1ppbp/3nb1p1/4p1B1/6P1/1NP2P2/PP1Q3P/K2R3R w - -
>
>to avoid losing this game, you'd have to play this in 10 seconds or
>so, as it was a 5 0 game I believe... I certainly can't do it...
I can't avoid playing Bxe7 within 3 minutes, let alone 5-10 seconds.
white
. . r . . . k .
p p q . p p b p
. . . n b . p .
. . . . p . B .
. . . . . . P .
. N P . . P . .
P P . Q . . . P
K . . R . . . R
Phase = Middlegame, Target search time = 180 sec, Root score = 82
5& 0.8 103 21456 Bxe7 Qxe7 Qxd6 Qxd6 Rxd6 Bxb3 axb3 Bh6
5. 1.6 103 37293 Bxe7 Qxe7 Qxd6 Qxd6 Rxd6 Bxb3 axb3 Bh6
6& 3.5 79 79060 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
Rg1
f4
6. 6.8 79 129070 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
Rg1
f4
7& 10.8 76 203224 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
h3
f4 Bh4
7. 20.1 76 370954 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
h3
f4 Bh4
8& 32.1 69 602307 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
g5
Bd5 Rf1 Ne3
8. 65.3 69 1239913 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
g5
Bd5 Rf1 Ne3
9. 180.0 69 3336179 Bxe7 Nc4 Qd8+ Rxd8 Rxd8+ Qxd8 Bxd8 f5
g5
Bd5 Rf1 Ne3
My move is : Bxe7
Time = 180.0 Rate=18533 Nodes=[2213602/1122577/3336179]
Eval=1668137 RptCnt=230 NullCut=113523
Extensions: Check=62570 Recapture=41841 Pawn=950 PassedPawn=0
OneMove=0 Threat=0 DeepSearch=0 Mate=0
Material=[3100/2900] Worst=[-641/-371]
Hash: Success=5% Collision=60%
Hash Counts: ReadHits=135078, ReadProbes=2354232, WriteColl=273885,
WriteTries=452288
Pawn Hash: Success=96% Collision=57%
Pawn Counts: ReadHits=3230582, ReadProbes=3336274, WriteColl=60440,
WriteTries=105692
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