A Retrograde Analysis Puzzle- description and story in comments : r/chess
Por um escritor misterioso
Descrição
Looking back – Christmas puzzles
How to Solve Difficult Problems by Using the Simple Retrograde Analysis Technique.
The Chess Mysteries of Sherlock Holmes (Raymond Smullyan, 1979)
Masterworks of Retro Analysis
The Entertainer Scientific American
A tricky retrograde analysis problem. What was white's first bishop move of this game? Only one correct answer exists! : r/chess
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Retrograd puzzle: Is it possible to reach this position in exactly four moves? : r/chess
Rex Parker Does the NYT Crossword Puzzle: SUNDAY, July 20, 2008 – Barry C. Silk (ANCIENT GREEK COINS/NATIONAL FLOWER OF MEXICO)
logical deduction - Skyscrapers in Sudoku!!! - SS#10 - Puzzling Stack Exchange
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