@ARTICLE {, 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.}, }