List of impossible puzzles

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Topics Brain teaser Dilemma Enigma Optical illusion Packing problem Paradox Problem solving Puzzlehunt Syllogism Thinking outside the box

Lists List of impossible puzzles List of maze video games List of Nikoli puzzle types List of puzzle topics List of puzzle video games

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This is a list of puzzles which have been proven impossible. An impossible puzzle is a puzzle that cannot be solved by following the directions or criteria for that puzzle.

• Mutilated chessboard problem
• Some variations of Fifteen puzzle
• Three-colouring the edges of the Petersen graph
• Seven Bridges of Königsberg
• Water, gas, and electricity
• Three cups problem

See also

• Impossible Puzzle
• -gry

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