Author: Robert Hyatt
Date: 08:18:34 05/16/04
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On May 16, 2004 at 03:43:58, Gilles Garrigues wrote: >Bob : I am looking into your .tbs files from your EGTB directory but I still >have to figure out what a "broken position" is. It is a "hold-over" from early table applications. Such a position is not possible. IE say king vs king with both kings on the same square. The so-called "Godel number" is basically two 6-bit values combined into one 12 bit number. Doing so means every possible square on the board with every possible square on the board, giving positions where two (or more) pieces occupy the same square. Etc.. >Maybe this has to do that english is not my native language :) > >Also what is the best place listing (glossary) the meaning of DTM, DTC (...) >Those words are used in many EG stats and programs like Wilhelm but not always >defined for EGTB beginners like me ? I'm not sure there is such a thing, although there might be. DTM = Distance to Mate. IE raw absolute number of moves required to force checkmate, even if it might violate the 50-move rule and end in a draw. DTC = Distance to Conversion, which is the distance to the next capture or promotion into a different table, but that starts the 50-move counter over. I'm not sure that all DTC efforts reset the 50-move counter on pawn pushes, leaving a hole if they don't. > >Thanks in advance. > >G. Garrigues (ELO 2105) >President, Dunkerque Chess Club (France)
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