title = {O Sudoku trochu inak},
author = {Trenkler, Marián},
journal = {Obzory matematiky, fyziky a informatiky},
year = {2005},
volume = {34},
number = {4},
pages = {1--8},
issn = {1335-4981},
abstract = {The mathematical brain-twister SUDOKU (Number Place in the U.S.) has
recently gained great popularity. We point out a relationship between SUDOKU and
4-dimensional Latin cubes. Namely, we assign the cells 4-tuples of numbers – coordinates
in 4-dimensional space and then consider the game plan as a 4-dimensional cube.
We also mention some variants of SUDOKU.},