Logic Masters Deutschland e.V.

Rules:

Normal Sudoku rules apply.

Draw two one-cell-wide loops of orthogonally connected cells. Each loop cannot touch itself, not even diagonally. The loops overlap at '+' indicators (either by meeting at right angles or by passing through each other), and cannot overlap in any other cells in the rest of the grid.

Thermo-Loop: One of the loops is a Thermo-Loop. Whenever a Thermo-Loop travels vertically, the northern digit is greater than the southern digit. Whenever a Thermo-Loop travels horizontally, the eastern digit is greater than the western digit.

German Loop: One of the loops is a German Loop. Adjacent digits along a German Loop must differ by at least 5.

Circles: Cells containing a circle cannot be on the Thermo-Loop (but may or may not be on the German Loop) and count the number of Thermo-Loop cells they touch (both orthogonally and diagonally).

Squares: Cells containing a square cannot be on the German Loop (but may or may not be on the Thermo-Loop) and count the number of German Loop cells they touch (both orthogonally and diagonally).

Diamonds: Cells containing a diamond cannot be on either loop and count the total number of loop cells they touch (both orthogonally and diagonally). If a diamond touches a cell which both loops pass through, that cell counts twice for the diamond total.

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