A tetromino is a 4-polyomino. There are five free tetrominoes, seven one-sided tetrominoes, and 19 fixed tetrominoes. The free tetrominoes are known
as the T-tetromino, L-tetromino,
skew tetromino, square
tetromino, and straight tetromino, respectively.
The shapes were popularized in the game Tetris, developed by Alexey Pajitnov in June 1985.
See also
Polyomino
Explore with Wolfram|Alpha
References
Gardner, M. "Mathematical Games: About the Remarkable Similarity between the Icosian Game and the Towers of Hanoi." Sci. Amer. 196,
150-156, May 1957.Gardner, M. "Polyominoes." Ch. 13 in
Hexaflexagons
and Other Mathematical Diversions: The First Scientific American Book of Puzzles
and Games. New York: Simon and Schuster, pp. 124-140, 1959.Hunter,
J. A. H. and Madachy, J. S. Mathematical
Diversions. New York: Dover, pp. 80-81, 1975.Referenced on
Wolfram|Alpha
Tetromino
Cite this as:
Weisstein, Eric W. "Tetromino." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Tetromino.html
Subject classifications
