Puzzle rules
Thermometers
Determine the mercury level in every thermometer. Mercury fills continuously from the round bulb toward the open end and cannot leave gaps. Numbers outside the grid show exactly how many cells contain mercury in each row and column. Any red pre-filled cells or grey striped empty thermometers are fixed hints.
How to solve
Complete rules
Goal: Determine how much mercury is contained in every thermometer. Rules: - Mercury fills each thermometer continuously from its round bulb toward the open end. - A thermometer may be completely empty, partially filled, or completely full. - Mercury cannot float above an empty section or leave gaps inside a thermometer. - Numbers outside the grid show exactly how many filled cells appear in each row and column. - Red cells are pre-filled mercury hints and must remain filled. - A grey striped thermometer marked 0 is revealed as completely empty. - Use all thermometer shapes and the row and column counts to determine the unique solution.