• Combinatorial Games@ (13)
• For Kids@ (29)
• Games and Puzzles (72)
• Magic Square (42)

• Ambigrams@ (19)
• Flexagons (4)
• Polyominoes (90)
• Specific Numbers (181)
• Tessellations (46)

• Competitions (117)
• Conway's Game of Life@ (26)
• Famous Problems (21)

See also:

• Arts: Crafts: Paper: Origami: Geometry and Modulars (13)
• Games: Puzzles (656)
• Recreation: Humor: Science: Mathematics (24)
• Science: Math: Chaos and Fractals: Fractal Art (129)
• Science: Math: Geometry: Sculpture and Art (15)

• Table of Numbers Problem
  alpertron.com.ar
  Given a m * n rectangle, place all numbers from 1 to mn that minimizes the sum of the products of rows and columns (both in Spanish and English).
• Fast Arithmetic Tips
  cut-the-knot.org
  Three categories: defensive - know to check an answer, offensive - fast mental calculations, and math magic.
• Mathematical Induction
  math.cl
  A page of uncommon problems, most closely connected with number theory.
• SimonSingh.net
  simonsingh.net
  Home of Simon Singh: author, journalist and TV producer, specialising in science and mathematics. Cryptography is one of his specialties, and his site has a lot of educational and fun content about codes and codebreaking.
• The Nine Digits Page
  worldofnumbers.com
  Puzzles and problems connected with numbers using the digits 1-9.
• Maze Classification and Algorithms
  astrolog.org
  A short description of mazes and how to create them. Definition of different mazetypes and their algorithms.
• Cryptarithms Online
  geocities.com
  70 brain-teasers; a Primer on Cryptarithmetic; books and links to alphametics on the Web.
• Famous Curves Index
  www-groups.dcs.st-and.ac.uk
  Curves you've heard of and curves you haven't, from Astroid to the Witch of Agnesi.

• CuriousMath
  curiousmath.com
  Include news, math tricks, methods, facts, trivia, mostly posted by users.
• Mathmos
  mathmos.net
  Includes puzzles, jokes, quotations, poetry, and FAQs.
• Fibonacci numbers and the Pascal triangle
  milan.milanovic.org
  The relation between Fibonacci numbers and Pascal's triangle. English/German/Serbian.
• Mathematik
  mathematik.com
  Individual pages on different topics in Mathematics. Examples : group theory, dynamical systems theory, geometry or number theory.
• Mathematical Problems - Problem Solving
  mathres.kevius.com
  Mathematics Hots (Problems) by Bruno Kevius
• Eric's Scientific Book List: Recreational Mathematics
  ericweisstein.com
  Book list from Eric Weisstein including titles, authors, publishers, prices, page count and some have links to Amazon.com.
• Critical Math
  gwywyr.com
  Articles and images on recreational math from fractals and magic squares to mathemorchids and Galois.
• Mathematics in Art and Architecture
  math.nus.edu.sg
  An interdisciplinary course on mathematics in art and architecture.
• Geometric Packing Problems
  york.cuny.edu
  By Joseph Malkevitch: "Given one shape X how and when can one pack identical copies of this shape into another shape Y?"
• Roman Numerals
  novaroma.org
  Includes a introduction to Roman numerals including a translation of the digits used and a converter which can convert decimal to Roman numerals and vice versa.
• Sir Roger Penrose
  worldofescher.com
  An article about him and his interests and contributions to recreational mathematics.
• Stunning Friends with Math Magic
  cut-the-knot.org
  A collection of card tricks, number guessing games, paper and glue magic, and other math exercises.

• Usenet rec.puzzles - news: - Google Groups

See Also:

• Science: Math: Recreations
• Science: Math: Recreations: Flexagons
• Science: Math: Recreations: Polyominoes
• Science: Math: Recreations: Magic Square
• Science: Math: Recreations: Competitions

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