My Little Blitz Tourney

[Edsel Apostol]

GUI: Arena 2.01
Time Control: 1'+1"
Opening: Noomen Test Suite 2006 + 2008 (with colors alternating)
Hardware: Intel Q8200
OS: Win XP 32 bit
Hash: 128 Mb each
Number of CPU's: 1
Result:

Code: Select all

   Engine              Score                                                                    Ry                                                                   St                                                                   Cy                                                                   T2    S-B
1: Rybka v2.2n2.mp.w32 23.0/40 ···································································· 00=1=1=1=1110                                                        0011111=1=1==1                                                       ===001==00=01                                                         439.50
2: Stockfish_14_ja     21.5/40 11=0=0=0=0001                                                        ···································································· =0101=111100=                                                        1=110111=010==                                                        407.50
3: Cyclone xTreme Rage 18.0/40 1100000=0=0==0                                                       =1010=000011=                                                        ···································································· 001111=011=1=                                                         359.00
4: T20090922           17.5/40 ===110==11=10                                                        0=001000=101==                                                       110000=100=0=                                                        ····································································  372.50

80 of 720 games played
Name of the tournament: Arena tournament new2
Site/ Country: **************
Level: Blitz 1/1
Hardware: Intel(R) Core(TM)2 Quad  CPU   Q8200  @ 2.33GHz4x  2333 MHz with 2,048 MB Memory
Operating system: Microsoft Windows XP Professional Service Pack 2 (Build 2600)
PGN-File: D:\chess\tests\arena201\Tournaments\Arena tournament new2.pgn
Website: 
E-Mail Address: 

-----------------Cyclone xTreme Rage-----------------
Cyclone xTreme Rage - Rybka v2.2n2.mp.w32 : 4.0/14 2-8-4 (1100000=0=0==0                                                      )  29%  -156
Cyclone xTreme Rage - Stockfish_14_ja     : 5.5/13 4-6-3 (=1010=000011=                                                       )  42%   -56
Cyclone xTreme Rage - T20090922           : 8.5/13 7-3-3 (001111=011=1=                                                       )  65%  +108
-----------------Rybka v2.2n2.mp.w32-----------------
Rybka v2.2n2.mp.w32 - Cyclone xTreme Rage : 10.0/14 8-2-4 (0011111=1=1==1                                                      )  71%  +156
Rybka v2.2n2.mp.w32 - Stockfish_14_ja     : 8.0/13 6-3-4 (00=1=1=1=1110                                                       )  62%   +85
Rybka v2.2n2.mp.w32 - T20090922           : 5.0/13 2-5-6 (===001==00=01                                                       )  38%   -85
-----------------Stockfish_14_ja-----------------
Stockfish_14_ja - Cyclone xTreme Rage     : 7.5/13 6-4-3 (=0101=111100=                                                       )  58%   +56
Stockfish_14_ja - Rybka v2.2n2.mp.w32     : 5.0/13 3-6-4 (11=0=0=0=0001                                                       )  38%   -85
Stockfish_14_ja - T20090922               : 9.0/14 7-3-4 (1=110111=010==                                                      )  64%  +100
-----------------T20090922-----------------
T20090922 - Cyclone xTreme Rage           : 4.5/13 3-7-3 (110000=100=0=                                                       )  35%  -108
T20090922 - Rybka v2.2n2.mp.w32           : 8.0/13 5-2-6 (===110==11=10                                                       )  62%   +85
T20090922 - Stockfish_14_ja               : 5.0/14 3-7-4 (0=001000=101==                                                      )  36%  -100

Twisted Logic is playing anti-Rybka here, though it's losing badly against tactically better engines like Stockfish and xTreme Rage.

[Edsel Apostol]

Code: Select all

   Engine              Score                                                                    St                                                                   Ry                                                                   Cy                                                                   T2    S-B
1: Stockfish_14_ja     44.5/78 ···································································· 11=0=0=0=00011101011011=11                                           =0101=111100=10011=0101===                                           1=110111=010===1==010=101=                                            1649.7
2: Rybka v2.2n2.mp.w32 42.5/78 00=1=1=1=11100010100100=00                                           ···································································· 0011111=1=1==1===111101=1=                                           ===001==00=010====11===101                                            1590.2
3: Cyclone xTreme Rage 36.0/78 =1010=000011=01100=1010===                                           1100000=0=0==0===000010=0=                                           ···································································· 001111=011=1=11=1=1=011100                                            1391.5
4: T20090922           33.0/78 0=001000=101===0==101=010=                                           ===110==11=101====00===010                                           110000=100=0=00=0=0=100011                                           ····································································  1365.0

156 of 720 games played
Name of the tournament: Arena tournament new2
Site/ Country: ******************
Level: Blitz 1/1
Hardware: Intel(R) Core(TM)2 Quad  CPU   Q8200  @ 2.33GHz4x  2333 MHz with 2,048 MB Memory
Operating system: Microsoft Windows XP Professional Service Pack 2 (Build 2600)
PGN-File: D:\chess\tests\arena201\Tournaments\Arena tournament new2.pgn
Website: 
E-Mail Address: 

-----------------Cyclone xTreme Rage-----------------
Cyclone xTreme Rage - Rybka v2.2n2.mp.w32 : 7.5/26 3-14-9 (1100000=0=0==0===000010=0=                                          )  29%  -156
Cyclone xTreme Rage - Stockfish_14_ja     : 11.5/26 8-11-7 (=1010=000011=01100=1010===                                          )  44%   -42
Cyclone xTreme Rage - T20090922           : 17.0/26 14-6-6 (001111=011=1=11=1=1=011100                                          )  65%  +108
-----------------Rybka v2.2n2.mp.w32-----------------
Rybka v2.2n2.mp.w32 - Cyclone xTreme Rage : 18.5/26 14-3-9 (0011111=1=1==1===111101=1=                                          )  71%  +156
Rybka v2.2n2.mp.w32 - Stockfish_14_ja     : 11.5/26 9-12-5 (00=1=1=1=11100010100100=00                                          )  44%   -42
Rybka v2.2n2.mp.w32 - T20090922           : 12.5/26 6-7-13 (===001==00=010====11===101                                          )  48%   -14
-----------------Stockfish_14_ja-----------------
Stockfish_14_ja - Cyclone xTreme Rage     : 14.5/26 11-8-7 (=0101=111100=10011=0101===                                          )  56%   +42
Stockfish_14_ja - Rybka v2.2n2.mp.w32     : 14.5/26 12-9-5 (11=0=0=0=00011101011011=11                                          )  56%   +42
Stockfish_14_ja - T20090922               : 15.5/26 11-6-9 (1=110111=010===1==010=101=                                          )  60%   +70
-----------------T20090922-----------------
T20090922 - Cyclone xTreme Rage           : 9.0/26 6-14-6 (110000=100=0=00=0=0=100011                                          )  35%  -108
T20090922 - Rybka v2.2n2.mp.w32           : 13.5/26 7-6-13 (===110==11=101====00===010                                          )  52%   +14
T20090922 - Stockfish_14_ja               : 10.5/26 6-11-9 (0=001000=101===0==101=010=                                          )  40%   -70

[Christopher Conkie]

Could you say a little more about the anti-rybka stuff that you implemented please Edsel?

What kind of things are working for you?

Christopher

[Edsel Apostol]

Could you say a little more about the anti-rybka stuff that you implemented please Edsel?

What kind of things are working for you?

Christopher

It's not really anti-Rybka, but the playing style of TL seems to counter that of the free Rybka. I noticed that in most games Rybka would have a big advantage in board control having high score but in a few more moves the score would suddenly turn in favor of TL as TL attacks the Rybka king while Rybka just take it for granted until it's too late.

Then in some positions Rybka underestimates connected passed pawns in favor of a piece like a rook for example. I think it relies mostly on some static material heuristic that favors the pieces/rook over pawns but it sometimes doesn't take into account the dynamics of the position. I have a feeling that Rybka's eval is very minimal, it is very fast NPS wise and the strength is in the search. I was talking about the free Rybka though, I'm not sure about the Rybka 3 version.