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Children:
Recreational mathematics
Show body
Body
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Problem Solving Through Recreational Mathematics
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Projective Set (game)
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Pseudo-polyomino
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Repdigit
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Rithmomachia
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Rope-burning puzzle
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Simple magic cube
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Soma cube
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Str8ts
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Taking Sudoku Seriously
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Tangram
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The Game of Logic
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The Lady's and Gentleman's Diary
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The Man Who Counted
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The spider and the fly problem
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Toy problem
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Two-cube calendar
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Vanishing puzzle
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Von Neumann's elephant
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Water pouring puzzle
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60