GNUchess & Hashtable setting

[Pete Galati]

A while back I had posted the pgnres printout of a short tournament that I had run to help judge Dragon's strength. But they were only 5 minute games. I was surprised at how bad GNU did, these are the results:
No. Name Win Draw Loss Unf. Score Games %
----------------------------------------------------------------------
1 AnMon427 +14 =1 -1 *0 14.5 16 90.6%
2 Chop +9 =0 -7 *0 9.0 16 56.2%
3 Zchess +8 =2 -6 *0 9.0 16 56.2%
4 Dragon311 +6 =1 -9 *0 6.5 16 40.6%
5 GNUChess +0 =2 -14 *0 1.0 16 6.2%
Total Games: 40
White Wins: 25 (62.5%)
Black Wins: 12 (30.0%)
Draws: 3 (7.5%)
Unfinished: 0 (0.0%)
From Zchess.ini, it looks like everything was left at default settings:
VERSION=120
;100x version number
[HashTables]
SIZE_HT=8
; Size in MByte for the HashTables
; Default : 8
[HashPawns]
SIZE_HP=2
; Size in MByte for the HashPawns
; Default : 2
LambChop was held to only 5mb of hash:
\"Chop -xboard -hash 5\" /fd=c:\\Chop710
\"Chop -xboard -hash 5\" /sd=c:\\Chop710
AnMon got 8mb hash, AnMon.ini:
SIZE_HT = 8 ;was 32
PATH_TB = "c:\Programme\Winboard\!TB_Alt"
DRAW_VALUE = 0
ENABLE_RESIGN = TRUE
ENABLE_BOOK = TRUE
GNUchess was default settings
So I finally got around to running the games with GNUchess over again, this time with smaller than default hashtable settings, this is the line in the winboard.ini file: \"GNUchess -T 175000\" /fd=c:\\winboard if I'm correct that gives GNU 4mb hashtable, here's the results:
No. Name Win Draw Loss Unf. Score Games %
----------------------------------------------------------------------
1 AnMon427 +14 =1 -1 *0 14.5 16 90.6%
2 Zchess +7 =2 -7 *0 8.0 16 50.0%
3 Dragon311 +6 =1 -9 *0 6.5 16 40.6%
4 Chop +6 =0 -10 *0 6.0 16 37.5%
5 GNUchess +4 =2 -10 *0 5.0 16 31.2%
Total Games: 40
White Wins: 26 (65.0%)
Black Wins: 11 (27.5%)
Draws: 3 (7.5%)
Unfinished: 0 (0.0%)
Note that GNUchess still came in last place, but the standings for the other programs changed because GNU has now won 4 of those games. Changing the hashtable settings on _only_ that one program completely changed the standings of all but the top program (AnMon).
Pete