Sujiken - Medium

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About Sujiken

Sujiken is a Sudoku variant invented by George Heineman (USA). The puzzle consists of a triangular grid with cells. The goal is to fill the empty cells with the digits from 1 to 9 so that no digit is repeated in a column, row or diagonal. Also, no digit may be repeated in any of the sub-squares or any of the triangular areas.