Shape Division

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Rules[edit]

Shape Division Example.png Shape Division Example Solution.png

Divide the shape into the indicated number of congruent parts along the grid lines. (Congruent parts have the same shape and size but may be rotated and/or reflected.)

(Rules and example from PGP IB)

Rule variations[edit]

  • Diagonal lines are allowed.
  • Mirrored images are not allowed.
  • Each shape contains a given set of symbols.
  • Shape to dissect into is already given.
  • Diagonal Dissection from WPC 2013: the shape consists of cells connected by edge or diagonally.

History of the puzzle[edit]

One of the most well-known mathematical puzzles. "Crowns and Lions" is a 4-piece Shape Division puzzle with two symbols (rule variation #3) by Henry Ernest Dudeney (USA), first published in The Canterbury Puzzles in 1907.

Appearances in the past WPCs[edit]