Logic Masters Deutschland e.V.

Rules:

Place the digits 1-9 once each into every row, column, and box.

The grid is covered in fog. Correctly placed digits will clear fog from the surrounding cells. No guessing is required.

A digit N on a circle counts the number of digits in the up to 8 surrounding cells that are greater than or equal to N.

A digit N on a square counts the number of digits in the up to 8 surrounding cells that are less than or equal to N.

All possible circles and squares are given.

Play on SudokuPad

Have fun solving!