The chess mystery, solved Fabulous adventures in coding

Happy St. Valentine's Day all. To solve the Smullyan retrograde chess puzzle posted yesterday, the first question to ask is "is the black king actually in check, or not?" In a great many retro problems the first task is to determine who is to move, and knowing that one or the other side is in…

[Arturo Perez-Reverte, Margaret Jull Costa] on . *FREE* shipping on qualifying offers. The Flanders Panel

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