Author: Pete Galati
Date: 22:31:12 04/13/00
Go up one level in this thread
On April 13, 2000 at 18:00:21, José de Jesús García Ruvalcaba wrote:
>[D]r1b2rk1/5pbp/p7/1P1P2q1/2B1pp2/N7/PP2QPPP/R4R1K b - - 1 19
>
> Black played 19... Qxg2+?, winning an exchange but giving up a dangerous and
>promising attack.
> Which programs are able to avoid this mistake?
>José.
At the search depths that I was able to reach, Crafty did Qxg2+, but Amy avoided
it for some reason, maybe with a deeper search Amy would have taken the pawn
with the Queen too. I'm trying to figure out why not 19....f3 forking white's
Queen and the pawn blocking the King, is there a reason the programs hate that
idea?
Pete
Amy version Winboard Version 0.7, Copyright (C) 2000 Thorsten Greiner
Amy comes with ABSOLUTELY NO WARRANTY; for details type 'warranty'
This is free software, and you are welcome to redistribute it
under certain conditions; type 'distribution'
Multiprocessor support (1 CPUs).
$Id: score.c,v 1.44 2000/03/21 15:18:58 thorsten Exp $
$Id: search.c,v 1.57 2000/03/22 10:19:02 thorsten Exp $
Hashtable sizes: 16384 k, 2048 k, 2048 k
Found 4-men endgame table bases.
White(1): White(1): TC: 60 moves in 300 secs
TL: 4/16
GamePhase: Opening
It Time Score principal Variation
1 0.0 -0.080 1. Na3
1 0.0 +++ 1. Nc3
1 0.0 +0.160 1. Nc3
1 0.0 +0.160 1. Nc3
2 0.7 --- 1. Nc3
2 0.7 -0.096 1. Nc3 Nf6
2 0.8 -0.096 1. Nc3 Nf6
3 0.8 +++ 1. Nc3
3 0.8 +0.160 1. Nc3 Nf6 2. Nf3
3 0.9 +0.160 1. Nc3 Nf6 2. Nf3
4 0.9 --- 1. Nc3
4 0.9 -0.096 1. Nc3 Nf6 2. Nf3 Nc6
4 1.0 -0.096 1. Nc3 Nf6 2. Nf3 Nc6
5 1.1 +0.096 1. Nc3 Nf6 2. Nf3 Nc6 3. e4
5 1.2 +0.096 1. Nc3 Nf6 2. Nf3 Nc6 3. e4
6 1.4 -0.096 1. Nc3 Nf6 2. Nf3 Nc6 3. e4 e5
6 2.0 -0.096 1. Nc3 Nf6 2. Nf3 Nc6 3. e4 e5
7 2.7 +0.112 1. Nc3 Nf6 2. Nf3 Nc6 3. d4 d5 4. Bf4
7 3.7 +0.112 1. Nc3 Nf6 2. Nf3 Nc6 3. d4 d5 4. Bf4
8 5.7 -0.096 1. Nc3 Nf6 2. Nf3 Nc6 3. d4 d5 4. Bf4 Bf5
8 10.0 +++ 1. e3
8 10.3 -0.080 1. e3 Nf6 2. Nf3 Nc6 3. Be2 d5 4. O-O e5
8 11.7 -0.080 1. e3 Nf6 2. Nf3 Nc6 3. Be2 d5 4. O-O e5
9 21.8 +0.032 1. e3 Nc6 2. Nf3 e5 3. Nc3 Nf6 4. d4 e4 5. Ng5
9 25.1 +++ 1. Nc3
9 28.0 +0.080 1. Nc3 Nf6 2. Nf3 Nc6 3. e4 e6 4. e5 Nd5 5. Nxd5
9 35.4 +0.080 1. Nc3 Nf6 2. Nf3 Nc6 3. e4 e6 4. e5 Nd5 5. Nxd5
10 1:11 -0.064 1. Nc3 Nc6 2. e4 e6 3. d4 Bb4 4. a3 Bxc3+ 5. bxc3 Nf6 6.
Bd3
10 2:26 +++ 1. d4
10 2:56 +0.000 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Bd6 5. O-O O-O
10 3:03 +0.000 1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Bd6 5. O-O O-O
11 5:56 +0.048 1. d4 Nf6 2. Nf3 e6 3. Nbd2 Nc6 4. e4 Be7 5. Bb5 Bb4 6.
c3
11 6:45 +++ 1. Nc3
11 8:38 +0.128 1. Nc3 d5 2. Nf3 d4 3. Nb5 Nc6 4. e3 e5 5. exd4 exd4 6.
Bc4
11 10:46 +++ 1. Nf3
11 10:59 +0.144 1. Nf3 Nf6 2. e3 d5 3. Be2 Nc6 4. O-O Bf5 5. Nc3 d4 6.
Nb5
11 11:08 +0.144 1. Nf3 Nf6 2. e3 d5 3. Be2 Nc6 4. O-O Bf5 5. Nc3 d4 6.
Nb5
Nodes = 8381706, QPerc: 69 %, time = 836.51 secs, 10.0 kN/s
Extensions: Check: 95030 DblChk: 27 DiscChk: 203 SingReply: 4955
Recapture: 57676 Passed Pawn: 0 Zugzwang: 0
Hashing: Trans: 110480/2568919 = 4 % Pawn: 4145759/4556964 = 90 %
Eval: 1255804/5812768 = 21 %
EGTB Hits/Probes = 0/0
Hashtable 1: entries = 1048576, use = 296073
White(1):
I'll be back.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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