| 翻訳と辞書 | List of impossible puzzles| List of impossible puzzles  : ウィキペディア英語版 | 
 
 This is a list of puzzles which have been proven impossible to solve. An impossible puzzle is one that cannot be solved by following its directions or criteria.
 * 15 puzzle for half of the starting positions
 * Five room puzzle
 * MU puzzle
 * Mutilated chessboard problem
 * Coloring the edges of the Petersen graph with three colors
 * Seven Bridges of Königsberg
 * Three cups problem
 * Water, gas, and electricity
 ==See also==
 
 * Impossible Puzzle
 * -gry
 
 
 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』
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