Logic Masters Deutschland e.V.

• Normal sudoku rules apply.
• The grid is toroidal: each edge of the grid is considered to be adjacent/orthogonal to its opposite edge. Lines wrap around opposite sides of the grid.
• Adjacent digits along the green line must have a difference of at least 5.

Online in Sudokupad

See also:

• homotopically 3/4
• on elliptic hyperboles
• the three utilities problem