Citter 0.80 x64 - chess960 testing underway

[Ray]

Chess960 tests should be completed within the next 24hrs and the ratings list updated.

Initial results after 400 games to date put Critter in 3rd place on the list, behind Rybka and Stockfish. It should hold this position.

[Ray]

Results so far

CCRL 404FRC main list:
Critter 0.80 64-bit is #3 with rating of 3152 ELO points (+26 -26),
based on 500 games: 178 wins, 179 losses and 143 draws
Score: 49.9%, Average opponent: +0.6, Draws: 28.6%


Pairwise results:
Opponent ELO Score LOS Perf
- Rybka 4 C13510 64-bit 3302 37.5-62.5 (+25-50=25) 0.0 +60
- Stockfish 1.8 64-bit 3240 32.0-68.0 (+17-53=30) 0.0 -34
- Naum 4.2 64-bit 3125 55.0-45.0 (+39-29=32) 96.1 +6
- Shredder 12 3120 56.0-44.0 (+42-30=28) 98.3 +12
- Deep Sjeng WC2008 64-bit 1CPU 2976 69.0-31.0 (+55-17=28) 100.0 -43

CCRL 404FRC Rating List - All engines, best versions only
72400 games played by 79 programs, run by 1 testers
Ponder off, 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 4 minutes on Athlon 64 X2 4600+ (2.4 GHz)
Computed on July 26, 2010 with Bayeselo based on 72'400 games
Tested by CCRL team, 2005-2010, http://computerchess.org.uk/ccrl/404FRC/

Rank Engine ELO + - Score AvOp Games
1 Rybka 4 C13510 64-bit 3302 +25 -24 73.1% -184.0 700
2 Stockfish 1.8 64-bit 3240 +20 -20 67.4% -139.3 1000
3 Critter 0.80 64-bit 3152 +26 -26 49.9% +0.6 500
4 Naum 4.2 64-bit 3125 +15 -15 56.5% -50.9 1700
5 Shredder 12 3120 +16 -16 52.7% -22.7 1500
6 Hiarcs 13.1 2998 +18 -18 44.3% +46.3 1300
7 Deep Sjeng WC2008 64-bit 1CPU 2976 +12 -12 50.2% -1.5 3000
8 Cyclone xTreme Fear 2927 +14 -14 48.1% +13.0 2100

Final batch of games and the web site update this evening UK time.

[Ray]

Web site updated

Entire database
http://www.computerchess.org.uk/ccrl/404FRC/index.html

Pure database
http://www.computerchess.org.uk/ccrl/40 ... _pure.html

Critter played flawlessly, no chess960 castling problems, a feat not many engine authors achieve first time out.

[zezius]

Hi... this is my 1st post here.

Well, where can i download this Citter or Critter 0.80 x64 ?

thank you

[Graham Banks]

Hi... this is my 1st post here.

Well, where can i download this Citter or Critter 0.80 x64 ?

thank you

http://critterchess.sourceforge.net/

Cheers,
Graham.

[Ray]

No you can't download from there by the looks of it - that is only the earlier open source versions

The direct download is here

http://www.mediafire.com/?jkjpnzk5yg5p0e3