The Math of Sudoku
The Math of Sudoku
The Math of Sudoku
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Gerechte designsIntroduced by the German statistician W.U. Behrens in 1956.A gerechte design is an n × n table filled with n different symbols andpartitioned into n regions, each containing n small squares <strong>of</strong> the grid,in such a way that :each symbol occurs exactly once in each row, each column,and eachregion.Example: two gerechte designs <strong>of</strong> order 9:
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