| http://www.w3.org/ns/prov#value | - A rectangular Sudoku uses rectangular regions of row-column dimension R??C. For R??1 (and 1??C), i.e. where the region is a row or column, Sudoku becomes a Latin square.Other Sudoku variants also exist, such as those with irregularly-shaped regions or with additional constraints (hypercube) or different (Samunamupure) constraint types.
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