![]() Physical limitations of computer hardware aside, in principle it is possible to solve any game under the condition that the complete state is known and there is no random chance. While endgame tablebases exist for other board games, such as checkers, nine men's morris, and some chess variants, the term endgame tablebase is usually assumed to refer to chess tablebases. Tablebases also facilitate the composition of endgame studies. Initially, some exceptions to the fifty-move rule were introduced, but when more extreme cases were later discovered, these exceptions were removed. ![]() This caused the fifty-move rule to be called into question, since many positions were discovered that were winning for one side but drawn during play because of this rule. Some positions which humans had analysed as draws were proven to be winnable in some cases, tablebase analysis found a mate in more than five hundred moves, far beyond the ability of humans, and beyond the capability of a computer during play. Tablebases have profoundly advanced the chess community's understanding of endgame theory. ![]() As of 2023, work is still underway to solve all eight-piece positions. By August 2012, tablebases had solved chess for almost every position with up to seven pieces, with certain subclasses omitted due to their assumed triviality these omitted positions were included by August 2018. By 2005, tablebases for all positions having up to six pieces, including the two kings, had been created. Tablebases are generated by retrograde analysis, working backward from checkmated positions. Because every legal move in a covered position results in another covered position, the tablebase acts as an oracle that always provides the optimal move. a win for White, a win for Black, or a draw) and the number of moves required to achieve that result, both assuming perfect play. For each position, the tablebase records the ultimate result of the game (i.e. Tablebases are typically exhaustive, covering every legal arrangement of a specific selection of pieces on the board, with both White and Black to move. Tablebases are used to analyse finished games, as well as by chess engines to evaluate positions during play. In chess, an endgame tablebase, or simply tablebase, is a computerised database containing precalculated evaluations of endgame positions. ![]() Database of precalculated chess analysis A typical interface for querying a tablebase ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |