Logic Masters Deutschland e.V.

Larry the Lizard is back, and today he is going to wander through some ruins, full of broken walls and warm rocks on which to bask! The ruins are dappled with light and shade, though, and he can get neither too cold nor too hot...

Solve in SudokuPad

Sudoku:

• Normal sudoku rules apply.

Compass:

• The digits 1 through 8 represent directions, starting at 1 and going clockwise around the compass. For example, if 1 were south-east, then 2 would be south, 3 south-west and so on round to 8 being east.
• You must determine the compass' orientation. The same compass applies to every clue in the puzzle.

Larry the Lizard:

• Larry the Lizard takes a path consisting of steps, which forms a closed loop and must pass through the cell in which he is shown, travelling in the direction of the arrow.
• Each step starts from the cell on which the previous step ended.
• Each step moves Larry one cell in the direction indicated by the digit in the cell from which the step starts.
• Larry's path may not visit a cell more than once, nor may it cross over itself.
• Larry's path may not pass straight through any cell edge fully or partially covered by a wall (thick lines on cell edges), nor may it pass diagonally through pillars (rectangles on cell corners).

Light and Shade:

• Shade some cells in the grid so that all shaded cells form a single orthogonally-connected area and all unshaded cells form a single orthogonally-connected area.
• No 2x2 region is entirely unshaded, nor is any 2x2 region entirely shaded.
• Cells connected by a square have the same shading; either both are shaded or both are unshaded.
• Cells connected by a diamond have different shadings; the larger (hotter) of these two digits must be unshaded and the smaller (colder) shaded.
• All cells on Larry's path warm him up or cool him down. Cells on the path which are larger than the previous cell are not shaded. Cells on the path which are smaller than the previous cells are shaded. Cells which are equal to the previous cell may be either.