Puzzles

Puzzles have been in existence for thousands of years, intended to amuse and bemuse.

Some may tax your mind more than others, but they should always be fun.

Enjoy this collection, avoid frustration, and fight boredom.

Table of contents

Games

• Two-player games
• Bridge problems
• Chess problems
• Go problems

Graphical puzzles

• Bongard problems
• Subdivisions

Language puzzles

• Analogies
• Odd-one-out
• Riddles

Mathematical puzzles

• Action sequences
• Analytical puzzles
• Arithmetical puzzles
• Decision puzzles
• Geometric puzzles
• Logic puzzles
• Number sequences
• Set theory puzzles
• Statistical & combinatorics puzzles

Permutation puzzles

• Rubik's cube (3x3x3)
• Rubiks Revenge (4x4x4)
• Rubik's Professor (5x5x5)
• Fifteen puzzle

Real life problems

• How do you ... ?
• Lateral puzzles
• Non-scientific puzzles
• Physics puzzles

About puzzles

• Puzzles in science
• Solving puzzles

Puzzle resources

• Jim Loy's Puzzle Pages
• Riddles–Wu:Riddles
• Aha! Puzzles - Original creative puzzles by Lloyd King
• Puzzles from the Princeton undergraduate mathematics student society.
• rec.puzzles Archive
• ResultsAbout Riddles: Collection of links to other riddle web sites.
• Mathpuzzle: Puzzle blog of Ed Pegg Jr.
• PuzzlePicnic: Hundreds of deduction puzzles.
• Puzzles.com