Logic Masters Deutschland e.V.

Rules:

Place the digits 1-9 once each into each row, column, and box within the main 9x9 grid.

Place a digit into every cell outside the grid. A digit outside a row or column is placed into the Nth cell in that row or column, where N is the first digit in that row or column.

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.
Digits outside the grid are counted.

Play on SudokuPad

Have fun solving!