Recreational Mathematics (数学パズル)

  • Cryptograms (暗号文)
  • Dissection (裁ち合わせ)
  • Folding (ペーパーフォールディングパズル)
  • Games (ゲーム)
  • Illusions (錯覚)
  • Magic figures ()
  • Mathematical art ()
  • Mathematical humor ()
  • Mathematical records ()
  • Mathematics in the arts ()
  • Number guessing ()
  • Numerology ()
  • Puzzles ()
  • Sports ()

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