Genre of chess problem concerned with determining previously played moves
This article uses algebraic notation to describe chess moves.
In chess problems, retrograde analysis is a technique employed to determine which moves were played leading up to a given position. While this technique is rarely needed for solving ordinary chess problems, there is a whole subgenre of chess problems in which it is an important part; such problems are known as retros.
Retros may ask, for example, for a mate in two, but the main puzzle is in explaining the history of the position. This may be important to determine, for example, if castling is disallowed or an en passant capture is possible. Other problems may ask specific questions relating to the history of the position, such as, "Is the bishop on c1 promoted?". This is essentially a matter of logical reasoning, with high appeal for puzzle enthusiasts.
Sometimes it is necessary to determine if a particular position is legal, with "legal" meaning that it could be reached by a series of legal moves, no matter how illogical. Another important branch of retrograde analysis problems is proof game problems.
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uses algebraic notation to describe chess moves. In chess problems, retrogradeanalysis is a technique employed to determine which moves were played leading...
Look up retrograde in Wiktionary, the free dictionary. Retrograde may refer to: Retrograde (2004 film), a film by Christopher Kulikowski Retrograde (2022...
was published in 1843 by Julius Mendheim. Castling is common in retrogradeanalysis problems. By chess problem convention, if a player's king and rook...
that always provides the optimal move. Tablebases are generated by retrogradeanalysis, working backward from checkmated positions. By 2005, tablebases...
opening and closing of lines, both for white and black.": 106 By retrogradeanalysis convention, a pawn may be captured en passant only if it can be proven...
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is...
algebraic notation to describe chess moves. A proof game is a type of retrogradeanalysis chess problem. The solver must construct a game starting from the...
generated, a deterministic algorithm, such as backward induction or retrogradeanalysis can be used. Randomized algorithms and minmax algorithms such as...
in a process called backward induction. In chess, it is called retrogradeanalysis, and it is used to generate table bases for chess endgames for computer...
problem, castling is assumed to be allowed unless it can be proved by retrogradeanalysis (see below) that the rook in question or king must have previously...
also: L. B. Stiller (1991). "Some Results from a Massively Parallel RetrogradeAnalysis". ICCA Journal. Convekta Ltd. "Lomonosov Endgame Tablebases". Archived...
which the final position is the one given by the composer. A kind of retrogradeanalysis. pure mate A mating position in which each of the king’s potential...
Chess Mysteries of Sherlock Holmes ISBN 0394737571 – introducing retrogradeanalysis in the game of chess (1980) This Book Needs No Title ISBN 0671628313...
Retrogradation is the landward change in position of the front of a river delta with time. This occurs when the mass balance of sediment into the delta...
called backward search or backward chaining. In chess, it is called retrogradeanalysis. In game theory, a variant of backward induction is a method used...
Retrograde inversion is a musical term that literally means "backwards and upside down": "The inverse of the series is sounded in reverse order." Retrograde...
game Dynamic inconsistency Glossary of game theory Minimax theorem Retrogradeanalysis Solution concept Bellman's principle of optimality Osborne, M. J...
magazine devoted to chess puzzles, and composed at least one brilliant retrogradeanalysis study. Heart disease cut short Breyer's promising chess career. He...
Larry returns from his adventure in the desert. Mathematics used: Retrogradeanalysis and Crowd flux dynamics 117 15 "Growin' Up" Rob Morrow Robert Port...
correlation is mediated by an immune system overload in the context of retrograde menstruation, in which it fails to detect and kill cells that come outside...
threemovers, moremovers, helpmates, selfmates, fairy problems, or retrogradeanalysis. Moreover, composers have their own preferred style of composing...
– Joke chess problem – Combinatorial game theory Solving chess – Retrogradeanalysis – Chess aesthetics Chess in the arts Chess game collections Chess...
this research, entitled "Solving the Game of Awari using Parallel RetrogradeAnalysis" was published in IEEE Computer, Oct. 2003 and received worldwide...
king can win one of the knights). Also, a complete computational retrogradeanalysis revealed that they can force checkmate only on the edge of the board...
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