Matchstick puzzles are transport puzzles in which a number of matchsticks are arranged as squares, rectangles or triangles.
The problem to solve is usually formulated as : move n (some specified number) matchsticks to make m (another specified number) squares (or triangles, or rectangles).
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... promote the channel through their ordinary channels BBC1 and BBC2, using terrestrial signals, and this is seen by some as influential (to a certain limited extent) in ...