Advances and Applications in Discrete Mathematics
Volume 4, Issue 2, Pages 115 - 126
(October 2009)
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TWO REMARKS ON TORUS LIGHTS OUT PUZZLE
Masato Goshima (Japan) and Masakazu Yamagishi (Japan)
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Torus Lights Out puzzle, and a
criterion for the solvability of
Torus Lights Out puzzle. Both the
method and the criterion are easy to memorize.