Puzzles
- 15 Puzzle
- Archimedes' Box
- Baguenaudier
- Book Stacking Problem
- Braced Polygon
- Braced Square
- Caesar's Method
- Card Stacking Problem
- Cigarettes
- Cipher
- Ciphertext
- Cube Dovetailing Problem
- Eternity
- Goat Problem
- God's Number
- Kobon Triangle
- Loculus
- Loculus of Archimedes
- Lost in a Forest Problem
- Lucas Correspondence
- Moat-Crossing Problem
- Nanpure
- Number Place
- Ostomachion
- Puzzle
- Railroad Track Problem
- Reve's Puzzle
- Rubik's Clock
- Rubik's Cube
- Sofa Constant
- Sofa Problem
- Soma Cube
- Spider and Fly Problem
- St. Ives Problem
- Stomachion
- Sudoku
- Sultan's Dowry Problem
- Syntemachion
- Tangram
- Tent Problem
- Tower of Hanoi
- Towers of Hanoi
- Two Trains Puzzle
- Zome