Normal sudoku rules apply, and digits increase along thermometers from the bulb to the end. Clues outside the grid total the digits between the 1 and the 9 in that row/column, and the value of the letters used are to be deduced.
Normal sudoku rules apply, and digits increase along thermometers from the bulb to the end. Clues outside the grid total the digits between the 1 and the 9 in that row/column, and the value of the letters used are to be deduced.