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Retrograde analysis is a technique employed to determine which events occurred leading up to a given situation.

26 votes
3 answers
5k views

A Checkmate of Dubious Legality

Full-size image Black has just delivered checkmate in the above position - but is the position legal? If no, explain why. If yes, give Black's mating move. FEN: 3r4/2r4b/8/8/8/3Kp3/5k2/8 w - - 0 …
Brandon_J's user avatar
  • 9,397
6 votes
4 answers
510 views

Backwards pawns

Part One: Reach the above position from the starting position Part Two: Find the fastest way to get to this position. Answering part one will get you an upvote, answering part two gets the checkmar …
Brandon_J's user avatar
  • 9,397