Normal sudoku rules apply, and digits increase along thermometers from the bulb. Each thermo shown (the three passing through the centre are straight lines) has a bulb at one end, though for some of them that bulb is not shown.
Normal sudoku rules apply, and digits increase along thermometers from the bulb. Each thermo shown (the three passing through the centre are straight lines) has a bulb at one end, though for some of them that bulb is not shown.