Logic Masters Deutschland e.V.

This is a hybrid of Sudoku and Minesweeper. You need both Sudoku rules and the fact that adjacent digits share the mine count on their common edge.

Sudoku with digits 1–4: each row, column, and 2×2 box contains each of 1–4 exactly once.

Each digit equals the total number of mines on that cell's four edges (top, bottom, left, right). Each edge holds 0 or 1 mine.

Pre-painted edges around given clues:
• blue = 0 mines
• red = 1 mine

Unpainted edges are not given — deduce and mark them. (Pen tool under Settings ⚙).

Online play: https://sudokupad.app/2l5l74hihl

Mind the Edge ! #1: 000UYM.

Mind the Edge ! #2: 000UZC.

Mind the Edge ! #3: 000V0U.

Other interesting puzzles:

Magic 30: 000UVI.

7x7 clover sudoku 4: 000UMX.