Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Within the grid lies a single snake of orthogonally connected cells which does not touch itself (even diagonally).
The snake begins at the given 9 and also ends with a 9 in a cell to be determined.

Digits in a circle must appear in at least one of the four surrounding cells. Additionally, once placed, each clued digit must show the number of snake cells in the surrounding 9 cells (including itself if it is on the snake).
Digits may repeat around circles if allowed by other rules. If a clued digit repeats only one needs to show the number of surrounding snake cells.

6x6 example SudokuPad

6x6 example f-puzzles - solution shown below

Solve the 9x9 on SudokuPad

Solve the 9x9 on f-puzzles

EXAMPLE: