Logic Masters Deutschland e.V.

Rules: Place digits 1-9 such that each row, column, and box contains each digit exactly once.

Color exactly 9 squares, such that every box, row, and column contains exactly one colored square.

The numbers next to a row or column indicate the sum of the digits along that row or column, starting from the cell closest to the number, up to but not including the colored square on that row or column. However, 4 of the numbers outside the puzzle have been mistyped and are incorrect.

Cells separated by a white dot have a difference of exactly 1.

Adjacent cells along a green line have a difference of at least 5.

Play the puzzle online here!