Author: Pete Galati
Date: 23:10:38 04/13/00
Go up one level in this thread
On April 14, 2000 at 01:55:07, Jeremiah Penery wrote:
>On April 14, 2000 at 01:31:12, Pete Galati wrote:
>
>>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
>>
[snip]
>
>This search looks like it was run from the initial position, not the given
>position...
You're right! I'm sorry, I have no idea how to explain what I did wrong.
Thanks, this search at least considered 19...f3 that I was talking about but
gave it up.
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): Black(1): TC: 60 moves in 300 secs
TL: 4/16
GamePhase: Opening
It Time Score principal Variation
1 0.0 --- 1. .. axb5
1 0.0 -2.304 1. .. axb5
1 0.7 +++ 1. .. Qg6
1 0.7 -2.192 1. .. Qg6
1 0.7 +++ 1. .. f3
1 0.7 -2.064 1. .. f3
1 0.7 -2.064 1. .. f3
2 0.8 -1.968 1. .. f3 2. gxf3
2 1.0 -1.968 1. .. f3 2. gxf3
3 1.1 -1.968 1. .. f3 2. gxf3 exf3
3 1.3 -1.968 1. .. f3 2. gxf3 exf3
4 1.4 -1.968 1. .. f3 2. gxf3 exf3 3. Qc2
4 2.3 -1.968 1. .. f3 2. gxf3 exf3 3. Qc2
5 2.7 -1.968 1. .. f3 2. gxf3 exf3 3. Qxf3 axb5 4. Rg1
5 3.0 +++ 1. .. Bg4
5 3.3 -1.904 1. .. Bg4 2. Qc2 axb5 3. Nxb5 Qe7
5 4.9 +++ 1. .. Qe5
5 5.5 -1.840 1. .. Qe5 2. Rfb1 Bb7 3. bxa6 Bxd5
5 6.5 -1.840 1. .. Qe5 2. Rfb1 Bb7 3. bxa6 Bxd5
6 8.1 -1.984 1. .. Qe5 2. bxa6 Qxb2 3. Nc2 Bf5 4. Kg1
6 8.8 +++ 1. .. Bg4
6 9.6 -1.968 1. .. Bg4 2. Qc2 axb5 3. Nxb5 f3 4. g3
6 11.4 +++ 1. .. Qxg2+
6 11.9 -1.008 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Bxe2 axb5 5. Rg1
6 12.5 -1.008 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Bxe2 axb5 5. Rg1
7 13.5 -0.960 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Rd8 5. Rac1 a5
7 16.2 -0.960 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Rd8 5. Rac1 a5
8 18.5 -0.768 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rgb1
Rd8 6. Bxe2
8 23.6 -0.768 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rgb1
Rd8 6. Bxe2
9 30.6 -0.672 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rab1
Bd4 6. Bxe2 Bxf2
9 42.6 -0.672 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rab1
Bd4 6. Bxe2 Bxf2
10 56.3 -0.704 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rab1
Bd4 6. Bxe2 Bxf2 7. Rgc1
10 1:40 -0.704 1. .. Qxg2+ 2. Kxg2 f3+ 3. Kh1 fxe2 4. Rg1 Kh8 5. Rab1
Bd4 6. Bxe2 Bxf2 7. Rgc1
Nodes = 1230527, QPerc: 68 %, time = 116.35 secs, 10.6 kN/s
Extensions: Check: 36171 DblChk: 41 DiscChk: 1017 SingReply: 7309
Recapture: 5374 Passed Pawn: 3 Zugzwang: 0
Hashing: Trans: 18923/389847 = 4 % Pawn: 480932/495514 = 97 %
Eval: 345138/840652 = 41 %
EGTB Hits/Probes = 0/0
Hashtable 1: entries = 1048576, use = 62064
Black(1):
I'll be back.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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