Open Source Blitz: DoubleCheck 2.5

[lucasart]

Just released a new version of my engine DoubleCheck 2.5. Essentially it fixes a time bug, and introduces a simplistic notion of king attacks.

I tested it against v2.4 and it scored +70 elo after 200 games in 30"+0.5", but when tested in a rating list against a varied population of engine (v2.4 and v2.5 under samt conditions), it didn't add much elo (approx +15-20 elo)

Morality
1/ i should play more games in testing
2/ self testing sucks!

Anyway, here's the list with the addidtion of DC 2.5, and I also removed all the games of 2.4 to not create any rating distortion (cf explanation on CCRL page)

Code: Select all

Rank Name                  Elo    +    - games score oppo. draws 
   1 Critter 1.4          3242   33   32   350   74%  3044   34% 
   2 IvanHoe 999946h      3185   31   31   350   64%  3061   37% 
   3 Stockfish 2.2.1      3166   31   30   400   66%  3015   32% 
   4 Protector 1.4        2913   34   34   350   46%  2949   22% 
   5 Umko 1.2             2859   28   28   500   50%  2870   24% 
   6 Toga 1.4.1           2836   26   26   600   55%  2813   22% 
   7 Daydreamer 1.75      2734   27   27   450   60%  2660   29% 
   8 Fruit 2.1            2700   25   24   550   52%  2683   27% 
   9 Crafty 23.4          2653   27   27   500   38%  2760   24% 
  10 Cheng3 1.07          2643   66   62    80   70%  2508   30% 
  11 GNU Chess 5.07.173b  2642   26   26   500   47%  2666   27% 
  12 Arasan 13.4          2633   29   29   400   44%  2675   23% 
  13 Rodent 0.10          2624   29   28   400   55%  2589   25% 
  14 Pepito 1.59          2588   26   26   500   53%  2561   21% 
  15 Sloppy 0.2.2         2538   23   23   680   44%  2579   23% 
  16 Greko 9.0            2491   23   23   700   44%  2542   21% 
  17 Pawny 0.3.1          2469   26   26   500   50%  2469   19% 
  18 DoubleCheck 2.5      2421   30   30   400   48%  2436   15% 
  19 Olithink 5.3.0       2376   33   33   300   46%  2401   20% 
  20 EXchess 6.0.2        2353   31   32   350   41%  2424   19% 
  21 Sungorus 1.4         2343   29   30   400   37%  2445   22% 
  22 Jazz 501             2328   33   34   300   40%  2409   20% 

Note that the list contains a provisional rating of Cheng3 1.07 too (match still running)

[abik]

Thanks Lucas. DoubleCheck 2.5's binary for ARM-based Android devices available at UCI and XBoard Engines for Android.

[mar]

Just released a new version of my engine DoubleCheck 2.5. Essentially it fixes a time bug, and introduces a simplistic notion of king attacks.

I tested it against v2.4 and it scored +70 elo after 200 games in 30"+0.5", but when tested in a rating list against a varied population of engine (v2.4 and v2.5 under samt conditions), it didn't add much elo (approx +15-20 elo)

Morality
1/ i should play more games in testing
2/ self testing sucks!

Anyway, here's the list with the addidtion of DC 2.5, and I also removed all the games of 2.4 to not create any rating distortion (cf explanation on CCRL page)

Code: Select all

Rank Name                  Elo    +    - games score oppo. draws 
   1 Critter 1.4          3242   33   32   350   74%  3044   34% 
   2 IvanHoe 999946h      3185   31   31   350   64%  3061   37% 
   3 Stockfish 2.2.1      3166   31   30   400   66%  3015   32% 
   4 Protector 1.4        2913   34   34   350   46%  2949   22% 
   5 Umko 1.2             2859   28   28   500   50%  2870   24% 
   6 Toga 1.4.1           2836   26   26   600   55%  2813   22% 
   7 Daydreamer 1.75      2734   27   27   450   60%  2660   29% 
   8 Fruit 2.1            2700   25   24   550   52%  2683   27% 
   9 Crafty 23.4          2653   27   27   500   38%  2760   24% 
  10 Cheng3 1.07          2643   66   62    80   70%  2508   30% 
  11 GNU Chess 5.07.173b  2642   26   26   500   47%  2666   27% 
  12 Arasan 13.4          2633   29   29   400   44%  2675   23% 
  13 Rodent 0.10          2624   29   28   400   55%  2589   25% 
  14 Pepito 1.59          2588   26   26   500   53%  2561   21% 
  15 Sloppy 0.2.2         2538   23   23   680   44%  2579   23% 
  16 Greko 9.0            2491   23   23   700   44%  2542   21% 
  17 Pawny 0.3.1          2469   26   26   500   50%  2469   19% 
  18 DoubleCheck 2.5      2421   30   30   400   48%  2436   15% 
  19 Olithink 5.3.0       2376   33   33   300   46%  2401   20% 
  20 EXchess 6.0.2        2353   31   32   350   41%  2424   19% 
  21 Sungorus 1.4         2343   29   30   400   37%  2445   22% 
  22 Jazz 501             2328   33   34   300   40%  2409   20% 

Note that the list contains a provisional rating of Cheng3 1.07 too (match still running)

Congrats Lucas. With 1.05 i got a negative improvement if i remember so +15 to +20 is actually ok

Martin