Normal sudoku rules apply. Adjacent digits along the red line must alternate in parity (odd/even). Grey lines are thermometers. Digits along thermometers must increase from the bulb, which can be on either end, to be deduced. Digits separated by a white dot must be consecutive. Digits separated by an X must sum to 10. Cells in the same position within two 3x3 boxes cannot contain the same digit (disjoint sets).