Logic Masters Deutschland e.V.

• Normal sudoku rules apply.
• Any three consecutive cells along the dark teal (modular) line must contain one digit of each residue class modulo 3, i.e, the sets {147}, {258} and {369}.
• The 3x3 boxes split the blue line into connected components with the same sum.
• Adjacent digits along the red line must have different parity.
• Adjacent digits along the yellow line must have a difference of at least 2.
• Adjacent digits along the orange line must have a difference of at least 4.
• Any set of three consecutive cells along a grey (entropic) line must contain a low digit (123), a medium digit (456), and a high digit (789).

Online in Sudokupad

For reference, the blue loop covers r4c34 r5c34 r6c25 r7c1256 r8c123456.