Author: Guido
Date: 03:14:45 11/13/01
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On November 13, 2001 at 03:22:13, derrick gatewood wrote: >How much time and space would it take to compile the tablebase for an endgame >where each side had 3 pawns? would this be possible or it simple to large? It >seems like it would be so large since pawns dont have much movement. Has this >already been performed so I dont have to waste my time? The "Little Game" as it >is called on chess.net is my nemesis and I really want to figure out this game >and that tablebase would be all I would need to study it in depth. Thank you.. >as far as time goes, my system is 1.575 ghz athlon, with 512 megs of PC2100 >ram To answer to this question I should modify my program, but I can give you the RAM needs for the kpppkpp ending: Program: gafs - Version: 1.1 Ending: kpppkpp - Dimension: 30924210240 byte/table x 2 = 58984 Mb Ending: kpppkqp - Dimension: 81527463360 byte Ending: kpppkrp - Dimension: 81527463360 byte Ending: kpppkbp - Dimension: 81527463360 byte Ending: kpppknp - Dimension: 81527463360 byte Ending: kpppkp - Dimension: 1405645920 byte Ending: kqppkpp - Dimension: 122291195040 byte Ending: krppkpp - Dimension: 122291195040 byte Ending: kbppkpp - Dimension: 122291195040 byte Ending: knppkpp - Dimension: 122291195040 byte Ending: kppkpp - Dimension: 2108468880 byte Generation of kpppkpp ending requests 839842 Mb + 2 Mb without option -z Generation of kpppkpp ending requests 526828 Mb + 2 Mb with option -z Option -z refers to the possibility of disallocate and reallocate files (those requested for capture or promotion) when the program computes endings when White/Black moves, because not the same files are necessary in the 2 cases. The dimension are computed ordering the pieces in this sequence: wk+bk, wp, bp, wq, wr, wb, wn, bq, br, bb, bn, while 2 Mb is about the memory for the program. This is not the worst case with 7 men because kqrpkqp occupies 10 times more than kpppkpp. Obviously I have not tried .... Guido
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