OpenChess

Ladder matches #7 and #8 finished.

IvanHoe 57 drew 6-6 with IvanHoe 52, and so 57's challenge fails.
Houdini 1.03a reached 6 points, with 2 games left, so defending the challenge from version 1.02.

Ratings updated. Covers 674 games with a time control of 90 minutes each side. Zip and 7z compressed game files available. Know sample size is small.

Ratings updated. Covers 756 games with a time control of 90 minutes each side. Principal variation included in game output. 7-Zip file can be downloaded (compressed, but still 5MB). Know sample size is small.

Knockout event started with ten engines. Stockfish 2.0.1 has already defeated version 1.9.1 in the first preliminary-round match.

brinan wrote:Knockout event started with ten engines. [...]

Fire 1.31 wins event, beating Saros 2.3gs in final.

Houdini 1.5 knocked out by Saros.

IvanHoe 47 challenges Houdini 1.5 for number one spot.

First game drawn.

Use Silversuite files to provide set openings.

IvanHoe 47 tops ladder after beating Houdini 1.5 by 6.5-5.5.

Details

    * 90 minutes each
    * Both use 2 hardware threads
    * 64-bit engines
    * Ponder on
    * 256MB hash table
    * 32MB pawn hash for IvanHoe
    * Large Page support NOT implemented
    * Openings
          o Engines play both sides of randomly-chosen, set openings
          o Obtained from Silver Suite files
          o Merged file contains 50 non-gambit openings, and 25 gambits
    * File names
          o Houdini_15_x64.exe
          o \Mode_Game_Play\x86-64\IvanHoe999947c.exe
    * GUI is Arena 3

Is this running on 2 different hardware, or single with 2 cores per engine?

kingliveson wrote:[...]
Is this running on 2 different hardware, or single with 2 cores per engine?

One laptop, with CPU having 2 cores and 4 hardware threads. Each engine gets two hardware threads.

Deep Rybka 4 moves to third on ladder after finishing 6.5-2.5 ahead of Stockfish 2.0.1.