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)
“Weigh what loss your honor may sustain
If with too credent ear you list his songs,
Or lose your heart, or your chaste treasure open
To his unmastered importunity.”
—William Shakespeare (1564–1616)
“Voyagers discover that the world can never be larger than the person that is in the world; but it is impossible to foresee this, it is impossible to be warned.”
—James Baldwin (1924–1987)
“Nothing puzzles me more than time and space; and yet nothing troubles me less, as I never think about them.”
—Charles Lamb (1775–1834)