Logic Masters Deutschland e.V.

This puzzle is a homage to the best puzzle video game on this planet: the witness. To solve the sudoku puzzle, you first must solve a witness puzzle.

The rules

Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.

Killer-Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage.

Draw a one-cell-wide snake from one diamond to the other that never crosses itself and and only moves orthongonally along odd rows and odd columns (never over colored squares).

This snake must separate the grid in regions in a way that never a red and a green cell share a region (like in "the witness").

Additionally, the line acts as a entropic lines: Any set of three sequential cells along an entropic line must contain a low digit (123), a middle digit (456), and a high digit (789).

play on sudokupad