Logic Masters Deutschland e.V.

In all puzzles, normal 4x4 Sudoku rules apply.

Line Rules:
 - Renban: Digits on the line form a consecutive non-repeating set
 - Same Difference: Consecutive digits on the line always have the same difference
 - Thermo: Digits increase from the bulb end



1. Good Coordination

LINES - Each line obeys *exactly one* line rule (the lines could obey the same rule).

COORDINATES - Read from the bulb end, XYZ on a line indicates that row X column Y is Z.




2. Bad Coordination

LINES - Draw a straight 3-cell line eminating from each bulb (they might overlap).
Each line obeys *exactly two* of the line rules (the lines could obey the same rules).

FAULTY COORDINATES - Read from the bulb end, XYZ on a line indicates row X column Y is *not* Z. The lines cannot refer to the same cell.




3. Coordinated Coordination

LINES - Each line obeys *exactly one* line rule (different lines could obey the same rule).

MUTUAL COORDINATES - Read from the bulb end, XYZ on a line indicates that row X column Y is Z in the *other* grid.