Puzzles

Short logic and lateral-thinking puzzles, each with a hidden assumption or constraint worth catching.

• Portrait

  A five-clue syllogism about a mysterious Major Perkins — and the unstated assumption that breaks it.

• Long Distance

  A seven-move forced checkmate built around three queens confined to a single file.

• The Five Regiments

  Route five regiments across a shared road network so that no two ever cross paths.

• Around the Block

  An ant, a cube's vertices and face centers, and a walk that turns out to be impossible.

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