Logic Masters Deutschland e.V.

Link to SudokuPad: https://sudokupad.app/urooueeutg



Rules: Normal sudoku rules apply. Digits cannot repeat along the marked diagonal.

Global mod-3: Every 2×2 square of cells must contain all three possible remainders modulo 3 (i.e. at least one digit from each of the sets {1,4,7}, {2,5,8}, and {3,6,9}).

E-SW path: Draw a path starting in the top-left corner cell and finishing in the bottom-right corner cell, visiting every 3×3 box at least once. In a single step, the path may move only east (→) or southwest (↙).

Modular region-renban line: Any three consecutive digits along the path must have three different remainders modulo 3. Box borders divide the path into segments; each segment is a renban, i.e. it must contain consecutive, non-repeating integers in any order.