List of Impossible Puzzles

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 K√∂nigsberg
  • Water, gas, and electricity
  • Three cups problem

Famous quotes containing the words list of, puzzles, list and/or impossible:

    My list of things I never pictured myself saying when I pictured myself as a parent has grown over the years.
    Polly Berrien Berends (20th century)

    Nothing puzzles me more than time and space; and yet nothing troubles me less, as I never think about them.
    Charles Lamb (1775–1834)

    Religious literature has eminent examples, and if we run over our private list of poets, critics, philanthropists and philosophers, we shall find them infected with this dropsy and elephantiasis, which we ought to have tapped.
    Ralph Waldo Emerson (1803–1882)

    It is impossible, as impossible as to raise the dead, to restore anything that has ever been great or beautiful in architecture. That which I have ... insisted upon as the life of the whole, that spirit which is given only by the hand and eye of the workman, can never be recalled.
    John Ruskin (1819–1900)