Fixed Parity Thermos
by FullDeck and Missing a Few Cards Open on SudokuPad
GAS
- Thermometers
- Same-class lines
- Thermo
The brief
Standard sudoku rules apply: every row, column, and box must contain a complete set of the digits 1-9. On thermos, digits must increase from bulb to tip. In addition, on each thermometer all of the digits have the same parity (even or odd). Different thermos may have different parity.