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
Famous quotes containing the words list of, list, impossible and/or puzzles:
“The advice of their elders to young men is very apt to be as unreal as a list of the hundred best books.”
—Oliver Wendell Holmes, Jr. (1841–1935)
“Feminism is an entire world view or gestalt, not just a laundry list of women’s issues.”
—Charlotte Bunch (b. 1944)
“When once—which every body must be—you are convinced of the wickedness and deceit of men, it is impossible to preserve untainted your own innocence of heart. Experience will prove the depravity of mankind, and the conviction of it only serves to create distrust, suspicion—caution—and sometimes causelessly.”
—Frances Burney (1752–1840)
“Nothing puzzles me more than time and space; and yet nothing troubles me less, as I never think about them.”
—Charles Lamb (1775–1834)