Place the digits 1-9 once each in every row, column, and 9 cell orthogonally connected region. The location of each region must be determined. Along a thermometer, digits must increase from bulb to tip. The digit in the bulb of a thermometer indicates how many thermometer bulbs contain that digit. Additionally, the digit in the bulb of a thermometer indicates how many times that thermometer crosses a border between regions. A digit in a square indicates how many cells in its region are on a thermometer. A V shape between two digits points to the lower digit.