number game: Quick Facts

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Facts

Also Known As	mathematical puzzle • mathematical recreation • mathematical game • math game • math puzzle

Photos and Videos

Square numbers shown formed from consecutive triangular numbers

Oblong numbers formed by doubling triangular numbers

Odd numbers shown as gnomons

Diagram of a golden rectangle subdivided into progressively smaller colored squares, with white quarter-circle arcs forming an inward logarithmic spiral.

Impossible figures

The endless stair

Van Koch's snowflake curve

A space-filling curve

Sierpinski curve

Examples of mazes

See an explanation on Zeno's Achilles paradox, an infinite series concept used in finance to pay off mortgages

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Topics

lion in the well problem smudged faces problem ticktacktoe paradox tangram brakeman-fireman-engineer puzzle Instant Insanity pebbles dissection flexagon electronic game fantasy sport card game logic puzzle crossword puzzle children’s game Catan chess bridge poker

Key People

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Sam Loyd

American puzzlemaker

Marble statue of Fibonacci in a hooded robe with one hand extended, set against a brick wall and mural in Camposanto cemetery, Pisa, Italy.

Fibonacci

Italian mathematician

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Robert Recorde

Welsh mathematician

Cardano, Girolamo

Girolamo Cardano

Italian physician and mathematician