Bi-Diagonal Sudoku

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Bi-Diagonal Sudoku

Fill in the grid so that every every 3x3 box contains the digits 1 through 9. Moreover all 18 diagonals of 9 cells (marked in the coloured diagrams with the same color) contain the digits 1 through 9.

Diagrams with 18 diagonals

It is allowed that numbers in a row or in a column are equal.

Bi-Diagonal Sudoku

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