Matchstick puzzle

Matchstick puzzles are rearrangement puzzles in which a number of matchsticks are arranged as squares, rectangles or triangles. The problem to solve is usually formulated as: "move n matchsticks to make m squares, triangles, or rectangles". Some match stick problems are solved with planar topological graphs.[1]

A matchstick puzzle ("Move 1 matchstick to make the equation 6+4=4 valid") and its solution, below

Other matchstick puzzles require lateral thinking and are not just about making geometric shapes.

Different three-dimensional matchstick arrangements are also possible[2] as puzzles held together with friction.

References
  1. Weisstein, Eric W. "Match Problem". Retrieved 21 December 2021.
  2. Delft, Pieter van (1978). Creative puzzles of the world. New York: H.N. Abrams. ISBN 0810921529.
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