Logic Masters Deutschland e.V.

Play the sudoku here:

Solve on SudokuPad

Rules:

1. Normal Sudoku Rules
Place the digits 1–9 such that each appears exactly once in every row, column, and 3×3 box.

2. Anti-Knight Rule
Cells a knight’s move apart (as in chess) may not contain the same digit.

3. Black Kropki Dots
A black dot between two cells indicates the digits are in a 1:2 ratio. Not all possible black dots are given.

4. White Kropki Dots
A white dot between two cells indicates the digits are consecutive. Not all possible white dots are given.

5. Killer Cages
Digits inside a cage must be distinct and must sum to the total shown in the top-left of the cage.

6. Odd Circles
Digits inside grey circles must be odd.

7. Maximum Cells
Grey cells with outward-pointing arrows represent maximums: the digit in the cell must be greater than all orthogonally adjacent digits.

8. Minimum Cells
Grey cells with inward-pointing arrows represent minimums: the digit in the cell must be less than all orthogonally adjacent digits.

Any feedback is welcomed!