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Top Android UCI Engine Tournament

After this previous tournament , I conducted a tournament between various versions of the top engines under the same settings with more games. The results are shown below. Congrats to the stockfish team for winning this tournament!                            1 Stockfish 2.0           323.5/500 2 Stockfish 2.1           316.5/500 3 RobboLito 0.085e4l      250.5/500 4 RobboLito 0.085g3l      240.0/500 5 IvanHoe-Beta v999947c   196.5/500 6 Komodo32 1.3 JA         173.0/500

Perft for Checkers for Depth 24

I computed the perft number for 8x8 checkers for depth 24 with the same distributed implementation I used earlier for depths up to 23. Below you see the perft breakdown per move (called "divide") from the initial position for depths 22, 23, and 24. move         divide(22)       divide(23)        divide(24) ---------------------------------------------------------- 12-16:  243598269855110 1123463594881857  5192042148594780 11-16:  246743868125768 1131373985922218  5248615918291379 11-15:  209016678583301  984253557821317  4602138522979438 10-15:  215412869777867 1000606302770349  4643700995955222 10-14:  184865466345796  856779998157523  3988937724259353  9-14:  213736468971938 1003310451936358  4712325943133747  9-13:  288999100078322 1337748969176591  6263620622082081 ----------------------------------------------------------        1602372721738102 7437536860666213 34651381875296000

Chess for Android 2.9

I just released version 2.9 of Chess for Android, available from the Android market or as direct download . New features include: + built-in engine improvements (thanks to Attila for reporting) + various UCI improvements        engine tournament feature (with resume option)        option settings saved per engine        more flexible uninstall or clear options window        added robbobases support

Android UCI Engine Tournament

I conducted a full tournament between 17 currently available UCI engines for Android as well as the simple built-in Java engine. The tournament consisted of pair-wise matches between all engines for 10 games with random book opening play, one second-per-move, 32MB hash, and 8MB tablebases cache with the 3- and 4-piece Nalimov, Gaviota, Scorpio, Robbobases endgames on SD card. The 1530 games lasted about two days running full time on a Nexus One phone (without a single crash!). The results are shown below. 1  Stockfish 2.0                   157.5/170 2  RobboLito 0.085g3l              152.5/170 3  IvanHoe-Beta version 999947c    145.0/170 4  Komodo32 1.3 JA                 137.0/170 5  Toga II 1.4.1SE                 130.5/170 6  Pepito v1.59                    104.0/170 7  Daydreamer 1.75 JA              100.5/170 8  Rotor 0.6a                       98.0/170 9  gaviota v0.80.0.107              87.5/170 4647.75 10 GNU Chess 5.07.170.7b            87.5/170 4455.25 11 RedQuee

More Android Test Tournaments

A test tournament between different versions of Miguel Ballicora's Gaviota and Michel Van den Bergh's GNU chess.                          1          2          3          4          5           1 GNU Chess 5.07.170.7b ********** 000½10011½ 11½1110110 1100½01001 0111101111 24.0/40 2 gaviota v0.80.0.107   111½01100½ ********** ½010110100 0100½11110 ½101000011 20.5/40 3 GNU Chess 5.07.153.3b 00½0001001 ½101001011 ********** 0101010½01 0111111½10 20.0/40 4 gaviota v0.82-beta2   0011½10110 1011½00001 1010101½10 ********** 00110001½0 19.0/40 5 gaviota v0.83         1000010000 ½010111100 1000000½01 11001110½1 ********** 16.5/40 And another test tournament between different versions of Jan Brouwer's Rotor and Ben-Hur Carlos Vieira Langoni Jr.'s RedQueen.                     1          2          3          4          5           1 Rotor 0.6a        ********** ½111111011 1011111101 111½111111 11½1111111 35.5/40 2 RedQueen 0.9.8    ½000000100 ********** 1½01½½010½ 11½