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A matchstick puzzle ("Move 1 matchstick to make the equation 6+4=4 valid") and its solution below. Matchstick puzzles are rearrangement puzzles in which a number of matchsticks are arranged into shapes or numbers, and the problem to solve is usually formulated as moving a fixed number of matchsticks to achieve some specific other arrangement.
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A special class of stick puzzles are 'matchstick puzzles', where all parts used are sticks (usually matchsticks) rather than polysticks. Some trick puzzles can only be solved when one assumes that the sticks actually have measurements in more than one dimension. Three-dimensional arrangements like tetrastix can also be made from matchsticks [1].
It is held every second Tuesday in 50+ cities around the world, [1] with every location using the same puzzles. The global monthly attendance exceeds 3000. It follows the pattern of a conference-room style puzzle hunt, with teams receiving packets of 4-5 puzzles, usually with the answers feeding into a final metapuzzle. There is no prize. [2]
Computer puzzle game; Cross Sums; Crossword puzzle; Cryptic crossword; Cryptogram; Maze. Back from the klondike; Ball-in-a-maze puzzle; Mechanical puzzle. Ball-in-a-maze puzzle; Burr puzzle; Word puzzle. Acrostic; Daughter in the box; Disentanglement puzzle; Edge-matching puzzle; Egg of Columbus; Eight queens puzzle; Einstein's Puzzle; Eternity ...
The apparent triangles formed from the figures are 13 units wide and 5 units tall, so it appears that the area should be S = 13×5 / 2 = 32.5 units. However, the blue triangle has a ratio of 5:2 (=2.5), while the red triangle has the ratio 8:3 (≈2.667), so the apparent combined hypotenuse in each figure is actually bent.
Mathematical puzzles require mathematics to solve them. Logic puzzles are a common type of mathematical puzzle. Conway's Game of Life and fractals, as two examples, may also be considered mathematical puzzles even though the solver interacts with them only at the beginning by providing a set of initial conditions. After these conditions are set ...
A partially completed Eternity II edge-matching puzzle. An edge-matching puzzle is a type of tiling puzzle involving tiling an area with (typically regular) polygons whose edges are distinguished with colours or patterns, in such a way that the edges of adjacent tiles match.