OpenChess

An amazing match between Rybka 4 and Houdini is ongoing -- close to completion. Rybka 4 was up by I think 18 games after about 150 games and now after 260 games Houdini is up by one game!!!
The time control was 0+4s using 150 positions from klo suite. 4 cpu ponder=off quad Q6600 32 bit 3gb ram. 128Hash each .

Before this match , I had run a smaller match here are the results of that one:
same conditions as above but using 20 position Nunn suite instead. These 2 matches ran in parallel.
It seemed at this time control not much diff betw the two R4 settings, and Houdini had a slight lead against both

It seems to me that both engines are almost equal in strength --

I will post all the games when the big match is finished (Houdini 1.02 vs R4 [default settings] ) ...its an incredible battle!

The 300 game match is complete tc=+4s p=off


Houdini_w32_4CPU_1.02 - Rybka 4 w32 : 150.5/300 76-75-149 (00101=====0===11==1=0===01==0=0===1=11====01010====01100=1=1==1=000001100=0===01==1==0==000=00==010===10==0==1=101=110===100=10===01011=10====0==00=0==010====000==1=11=01==0=111=0====111011===11===011==111==0=0=1====001=001=01=01=11==001==1=11==10====11===========01==0===10=10===1===0=11110100==0===) 50%

And another incredible match, this time between Ivanh57a4 and R4:


IvanHoe_57a2_w32_SSE2_JR - Rybka 4 w32 : 52.0/100 24-20-56 (====1=1=0111=110=1=10=01====00=10====11=0======00=0====0=01=0==1===1========1=1===0==01000==1==11101)52%



Here is the file for all the games in all 3 matches


http://www.mediafire.com/?hmgynw5tja2