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The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of similar shapes in slightly different configurations.
Original – The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures. It depicts two arrangements of shapes, each of which apparently forms a 13×5 right-angled triangle, but one of which has a 1×1 hole in it.
MU puzzle – Transform the string MI to MU according to a set of rules. [3] Mutilated chessboard problem – Place 31 dominoes of size 2×1 on a chessboard with two opposite corners removed. [4] Coloring the edges of the Petersen graph with three colors. [5]
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This is a list of games in the 2017 version of British game show The Crystal Maze, sorted by zone. The coloured backgrounds denote the type of game: - Mental - Mystery - Physical - Skill ALIS - Automatic Lock-in Situation Aztec Zone Name of game Explanation Time ALIS Balancing scales Use a raft to retrieve sandbags and balance a set of scales to release the crystal 3:00 None Word wheel Turn ...