Normal sudoku rules apply. Digits in a circle appear at least once each in the four surrounding cells. From left to right, top to bottom, the following lines have the following properties: Whisper (green): Adjacent digits differ by 5 or more. Thermo (gray): Digits increase from the bulb to the end. Renban (purple): The line contains a set of consecutive digits (not necessarily in order). Between (gray): Digits on the line are between the values in the circled ends. Region Sum (blue): Digits on the line have the same sum in each box the line is in. 10 Line (gray): The line consists of one or more contiguous groups of cells, each of which sums to 10. Groups cannot overlap. Nabner (yellow): No two digits may be consecutive. Parity (red): Adjacent digits alternate between odd/even parity. Modular (black): Every set of three sequential digits contains one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}. Entropic (orange): Every set of three sequential digits contains one digit from {1,2,3}, one from {4,5,6}, and one from {7,8,9}.