Normal sudoku rules apply. Digits in cages must sum to the value shown in the upper left corner of the cage. Each line in the puzzle is EXACTLY TWO of modular, entropic, or parity. Modular Lines: Any set of three adjacent digits along a modular line has three different remainders when divided by 3. Entropic lines: Any set of three adjacent cells along an entropic line must contain a low digit (123), a middle digit (456), and a high digit (789). Parity Lines: Digits along parity lines alternate odd/even.