Some X-Sums

Some X-Sums

Rules:

  • Classic Sudoku:

    Every row, column and 3x3 box must contain every number from 1 to 9.

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  • X-Sums:

    A clue outside the grid indicates the sum of the first X digits of its row or column, where X is the digit placed in the first cell in that direction.

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Play it online in SudokuPad.

This puzzle is also on Logic Masters Germany.