n^d game

A n^d game (or n^k game) is a generalization of the game Tic-tac-toe to higher dimensions.^[1]^[2]^[3] It is a game played on a n^d hypercube with 2 players.^[1]^[2]^[4]^[5] If one player creates a line of length n of their symbol (X or O) they win the game. However, if all n^d spaces are filled then the game is a draw.^[4] Tic-tac-toe is the game where n equals 3 and d equals 2 (3,2).^[4] Qubic is the (4,3) game.^[4] The (n>0,0) or (1,1) games are trivially won by the first player as there is only one space (n⁰=1 and 1¹=1). The game with d=1, n>1 cannot be won because an opponents piece will block the one-dimensional line.^[5]

There are a total of ((n + 2)^d - n^d)/2 winning lines in a n^d game.^[2]^[6]

References

^ ^a ^b "Mathllaneous" (PDF). Retrieved December 16, 2016.
^ ^a ^b ^c Beck, József (2008-03-20). Combinatorial Games: Tic-Tac-Toe Theory. Cambridge University Press. ISBN 9780521461009.
^ Tichy, Robert F.; Schlickewei, Hans Peter; Schmidt, Klaus D. (2008-07-10). Diophantine Approximation: Festschrift for Wolfgang Schmidt. Springer. ISBN 9783211742808.
^ ^a ^b ^c ^d Golomb, Solomon; Hales, Alfred. "Hypercube Tic-Tac-Toe" (PDF). Retrieved December 16, 2016.
^ ^a ^b Shih, Davis. "A Scientific Study: k-dimensional Tic-Tac-Toe" (PDF). Retrieved December 16, 2016.
^ Epstein, Richard A. (2012-12-28). The Theory of Gambling and Statistical Logic. Academic Press. ISBN 9780123978707.

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[:0-1] "Mathllaneous" (PDF). Retrieved December 16, 2016.

[:1-2] Beck, József (2008-03-20). Combinatorial Games: Tic-Tac-Toe Theory. Cambridge University Press. ISBN 9780521461009.

[3] Tichy, Robert F.; Schlickewei, Hans Peter; Schmidt, Klaus D. (2008-07-10). Diophantine Approximation: Festschrift for Wolfgang Schmidt. Springer. ISBN 9783211742808.

[:2-4] Golomb, Solomon; Hales, Alfred. "Hypercube Tic-Tac-Toe" (PDF). Retrieved December 16, 2016.

[:3-5] Shih, Davis. "A Scientific Study: k-dimensional Tic-Tac-Toe" (PDF). Retrieved December 16, 2016.

[6] Epstein, Richard A. (2012-12-28). The Theory of Gambling and Statistical Logic. Academic Press. ISBN 9780123978707.

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v t e Tic-tac-toe
Variants	3D tic-tac-toe Gomoku Notakto Treblecross Number Scrabble Order and Chaos Pente Quantum tic-tac-toe Renju SOS Ultimate tic-tac-toe Wild tic-tac-toe
Related concepts	m,n,k-game n^d game Kaplansky's game Harary's generalized tic-tac-toe Hales–Jewett theorem Strategy-stealing argument Futile game Paper-and-pencil game
Similar games	Nine men's morris Score Four Tic-Stac-Toe Gobblet Quarto Three men's morris Nine Holes Achi Connect Four Connect6 OXO Toss Across Pentago

See also

References