Author: Les Fernandez
Date: 20:32:36 03/06/05
If I place a restriction that the chess positions involved in my coding scheme are guaranteed to lead to mate for the side to move then I can store a large number of chess positions with an average of very few bits. In fact never, regardless of what is on the board, will it take more then Approx. 200 bits to store. What is even more interesting is that entering 1 chess position with a guaranteed mate into my utility I can generate a slew of new mate positions and then store them into my encoding scheme. In fact the output below is from my utility called "Mate Cruncher". I dont know currently what use it may offer but as you will see it is a good compression. Perhaps some of you out here may find some use for it and I would be interested in hearing about them. Oh and BTW if you think this is good wait until I finish working on a similar thing that will potentially take 1 position and turn it into approx. 1500 very useful EPD's. At the moment I prefer not to mention why they will be useful but STAY TUNED. The following continuous 225 bit string stores all the epd strings you see at the bottom. This works out to an average of 2.6 bits/position. 110110010100101101100101001000111101000100000100100100100111000110010000011 011000000011001011101001111100101011010001111000100010100100110100001000101 100000000100000110111100001100000110000010000001111000111100011111001000000 In the above binary exists all the information you see here (88 epd positions) 2kn4/2pr4/pp3Q2/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr1Q2/pp6/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn1Q2/2pr4/pp6/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp4Q1/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr3Q/pp6/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/6Q1/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/7Q/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P2Q1/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P1Q2/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2P2Q1P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2P4P/PP3QP1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2P4P/PP4P1/4RQK1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3PQ3/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2PQ3P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2P4P/PPQ3P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/8/3P4/2P4P/PP4P1/1Q2R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/4Q3/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/3Q4/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/2Q5/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/1Q6/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp6/Q7/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 2kn4/2pr4/pp2Q3/8/3P4/2P4P/PP4P1/4R1K1 w - - pv Qf5; ce 32754; 4nk2/4rp2/2Q3pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/2Q1rp2/6pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 2Q1nk2/4rp2/6pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/1Q4pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/Q3rp2/6pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/1Q6/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/Q7/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/1Q2P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/2Q1P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P1Q2P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P4P2/1PQ3PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P4P2/1P4PP/1KQR4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/3QP3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P3QP2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P4P2/1P3QPP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/8/4P3/P4P2/1P4PP/1K1R2Q1 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/3Q4/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/4Q3/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/5Q2/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/6Q1/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/6pp/7Q/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4nk2/4rp2/3Q2pp/8/4P3/P4P2/1P4PP/1K1R4 w - - pv Qc5; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP3q2/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP6/2PR1q2/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP6/2PR4/2KN1q2 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP4q1/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP6/2PR3q/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/6q1/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/7q/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p2q1/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p1q2/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p2q1p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp3qp1/2p4p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4rqk1/pp4p1/2p4p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3pq3/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2pq3p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/ppq3p1/2p4p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 1q2r1k1/pp4p1/2p4p/3p4/8/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/4q3/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/3q4/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/2q5/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/1q6/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/q7/PP6/2PR4/2KN4 b - - pv Qf4; ce 32754; 4r1k1/pp4p1/2p4p/3p4/8/PP2q3/2PR4/2KN4 b - - pv Qf4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/2q3PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/6PP/2q1RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/6PP/4RP2/2q1NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/1q4PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/6PP/q3RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/1q6/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/q7/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/1q2p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/2q1p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p1q2p2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1pq3pp/p4p2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1kqr4/1p4pp/p4p2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/3qp3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p3qp2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p3qpp/p4p2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r2q1/1p4pp/p4p2/4p3/8/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/3q4/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/4q3/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/5q2/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/6q1/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/7q/6PP/4RP2/4NK2 b - - pv Qc4; ce 32754; 1k1r4/1p4pp/p4p2/4p3/8/3q2PP/4RP2/4NK2 b - - pv Qc4; ce 32754; Thanks, Les
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