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Rules of 'Equal Sum Sudoku'

Place numbers in the grid such that each row, column and 3x3 box contain the numbers 1 to 9. The given crosses mark groups of four cells in which two pairs of diagonally opposite numbers add up to the same sum.

EXAMPLE:


UNIQUE SOLUTION:

1 comment:

Rohan said...

This is an interesting variation, but not a very difficult one.