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:
“A man’s interest in a single bluebird is worth more than a complete but dry list of the fauna and flora of a town.”
—Henry David Thoreau (1817–1862)
“Lastly, his tomb
Shall list and founder in the troughs of grass
And none shall speak his name.”
—Karl Shapiro (b. 1913)
“Politics in a literary work, is like a gun shot in the middle of a concert, something vulgar, and however, something which is impossible to ignore.”
—Stendhal [Marie Henri Beyle] (1783–1842)
“Nothing puzzles me more than time and space; and yet nothing troubles me less, as I never think about them.”
—Charles Lamb (1775–1834)