Author: Erik Madsen

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Banks 71st Amateur Series Division 7

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MadChess 2.2 participated in Graham Banks’ 71st amateur tournament in division 7. Orio Bets Topp Lozz Jumb Rook MadC Talt Dros Jone Romi Ares 1. Orion 0.5 64-bit #### 11=0 =1== 000= 1011 0=1= 1=11 0==1 ==11 111= =1=1 =11= 65% 28.5 ( 942.0, 594.0) 2. Betsabe II 1.84 00=1 #### 10=1 1==0 =110 ===1 011= 1=1= 0101 11=1 0111 10== 61% 27.0 ( 948.0, 573.0) 3. Topple 0.2.1 =0== 01=0 #### 11=1 0=10 =000 ==01 0111 0011 011= 1=11 1111 58% 25.5 ( 954.0, 520.0) 4. Lozza 1.18 64-bit 111= 0==1 00=0 #### 0=0= ==11 0=1= 0111 1011 11=1… Continue Reading

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MadChess 3.0 Beta Build 039 (Bitboards)

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For the last month or so, in the evenings and on the weekends, I’ve been writing a new version of MadChess. For this 3.0 version, I’m writing code using bitboards instead of the mailbox board representation I used in MadChess 1.x and 2.x. I considered using C++ and even went as far as purchasing Bjarne Stroustrup’s The C++ Programming Language book and reading the first four chapters. But in the end I decided to stick with C#, the programming language with which I’m most familiar, for a few reasons. Microsoft has been adding high-performance features to C# in recent editions,… Continue Reading

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Banks 70th Amateur Series Division 7

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MadChess 2.2 participated in Graham Banks’ 70th amateur tournament in division 7. 1 2 3 4 5 6 7 8 9 0 1 2 1 Bagatur 1.5e 64-bit **** 11½½ 0½½½ ½½11 0½½1 1011 ½1½½ 01½½ ½001 01½1 ½110 1½1½ 26.5/44 574.00 2 MadChess 2.2 64-bit 00½½ **** ½½00 1½1½ ½0½1 1011 1½0½ 1½½1 111½ 1½1½ ½½½1 110½ 26.5/44 554.25 3 Drosophila 1.5.1 64-bit 1½½½ ½½11 **** 1000 ½100 ½½0½ ½½10 01½½ 111½ 0½11 ½110 ½½11 25.0/44 4 Lozza 1.18 64-bit ½½00 0½0½ 0111 **** 1011 101½ 10½½ ½0½1 1½½1 00½1 11½½ ½0½1 24.0/44 515.75 5 Shallow r694 64-bit 1½½0… Continue Reading

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Drawing Lost Games

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Play against MadChess starting from a slightly disadvantageous position. Select a game where a slight advantage was reached and the stronger side successfully converted it to a win. Use a clock. Set to rapid time control (not bullet or blitz). This allows time to think about each move (rather than simply react). Set MadChess rating to 100 points below personal rating. Play the weaker side. Attempt to draw the game. Continue Reading

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Winning Won Games

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Play against MadChess starting from a winning position. Select a game where a winning position was reached. But the stronger side failed to convert it to a win. And the game ended in a draw or loss. Do not review computer analysis that shows winning continuations. Use a clock. Set to rapid time control (not bullet or blitz). This allows time to think about each move (rather than simply react). Set MadChess rating to 100 points above personal rating. Play the stronger side. Attempt to win the game. Continue Reading