Author: Claudio Bollini
Date: 09:20:09 02/18/00
Hi, chess friends!
I've just finished an endgame test for three "knowledgeable" progs:
Junior 6, Hiarcs 7.32 and Shredder 4. Initially, my intention
was to find out which one performs better. Additionally, I want to
check the (presumable) boost with TBs.
I used a huge set of 1258 assorted endgame positions. I took it (I
believe) from a Rebel epd database (mes.epd). Anyway, you can
download it from Dann Corbit's FTP site: ftp://38.168.214.175/pub
Confirming my assumptions, H732 got the best score, although with
a very narrow margin. *But* incidentally I saw that TB didn't improve
that much their performances.
(BTW, I had to deactivate manually TBs use in "chssbase.ini". Engine
option from J6 menu seemed to ignore my request and kept using them).
As shown below, differences are negligible, if any (Shredder 4 case).
I still believe that TBs *should* increase endgame performance, but I
cannot explain what happened here. Any idea?
Best regards,
Claudio Bollini
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File: "mes.epd": 1258 endgame positions.
PII 266, 64Mb RAM, 1' per move, 8Mb Hash.
TB: from ChessBase (150Mb), files for 3 and 4 men. Most important:
KPK,KPPK,KPKP,KNKP,KNPK,KBKP,KRKP,KRKN,KRKB,KQKP,KQKN,KQKB,KQKR
*With* TableBase *Without* TableBase
hits % average hits % average
time time
H732 1044 (82.99%) 3" 1047 (83.23%) 4"
J6 1040 (82.67%) 4" 1021 (81.16%) 4"
S4 1024 (81.40%) 4" 1022 (81.24%) 3"
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