Author: Erik Madsen

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MadChess 1.4 Released

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I’ve added features to improve MadChess’ value as a sparring partner and analysis tool. I spent a lot of time implementing an algorithm that reduces the playing strength of MadChess. In chess GUIs that support the feature, MadChess will automatically adjust its playing strength to match the user. See the User Guide for details. Source code and EXEs available on the Downloads page. Added UCI_LimitStrength and UCI_Elo options. Added chess personalities from young child to expert. Added MultiPV (display multiple principal variations). Enabled PVS search for MultiPV or when ScoreError > 0. Do not reduce search horizon of pawn pushes.… Continue Reading

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Banks 45th Amateur Series Division 6

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MadChess 1.3 participated in Graham Banks’ 45th amateur tournament in division 6. 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 1 RomiChess P3L 64-bit ** 0½ 1½ 00 11 1½ 11 11 11 ½0 1½ 11 11 11 ½0 11 22.0/30 2 Sjakk 2.0 64-bit 1½ ** ½1 11 01 ½0 10 ½0 ½1 ½½ 1½ 11 ½1 ½1 11 11 21.0/30 3 OliThink 5.3.2 64-bit 0½ ½0 ** 01 01 11 ½1 ½½ 11 11 0½ ½½ 11 ½0 ½½ 11 18.5/30 4 Myrddin 0.86 64-bit 11 00 10 ** 10… Continue Reading

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MadChess Playing on Internet Chess Club (ICC)

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I registered a computer account on the Internet Chess Club (ICC). I’m using the WinBoard GUI to play MadChess against human opponents. I know the ratings of computer chess engines are not well calibrated to the ratings of human players. However, MadChess is exceeding my expectations, winning its first twenty games and counting. In case you’re wondering, I am not violating ICC rules. I registered MadChess as a computer account. All ICC players have the option of blocking computer players, if they wish to play only human opponents. See ICC Help : Computers for details. See Versus Human Ratings for… Continue Reading

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Banks 44th Amateur Series Division 7

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MadChess 1.3 participated in Graham Banks’ 44th amateur tournament in division 7. 1 2 3 4 5 6 7 8 9 0 1 2 1 Maverick 0.51 64-bit **** 001½ 1½11 ½010 00½1 1½11 1010 01½½ 1½½½ 1½11 1011 1011 27.5/44 2 Gibbon 2.57a 64-bit 110½ **** ½101 01½1 1½½1 ½1½0 1½00 ½100 ½1½½ ½101 ½½½1 1110 26.0/44 3 Absolute Zero 2.4.0.0 0½00 ½010 **** 1000 1½01 1100 11½1 11½1 1111 01½1 0½01 1010 24.5/44 4 Bagatur 1.3a 64-bit ½101 10½0 0111 **** 0011 0½01 0½01 101½ 110½ 011½ ½½10 10½1 24.0/44 518.50 5 FireFly 2.6.0 64-bit 11½0 0½½0 0½10… Continue Reading

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Madsen Bullet Swiss Edition 1

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Fritz 13 GUI2 min/game + 1 sec/move Fritz 13 opening book 128 MB cache Nalimov and Gaviota tablebases Intel i7 960 64 bit CPU @ 3.20 GHz 1 2 3 4 5 6 7 8 9 10 1 Komodo 5.1r2 64-bit +1 -1 -1 +½ -1 +1 +1 -½ +½ -½ 8.0/10 26 35 4 2 8 3 11 6 5 7 2 Critter 1.6a 64-bit -½ +1 +1 -½ +1 +½ -1 -½ +1 +½ 7.5/10 16 28 9 1 5 4 7 3 15 6 3 Rybka 4.1 SSE42 x64 -1 +1 -½ +1 +1 -0 -½ +½… Continue Reading