Normal sudoku rules apply. Most of the grid is obscured by fog. Placing a correct digit will remove the fog surrounding that cell. Each letter from A-J uniquely represents one of the digits 0-9. A two-letter clue represents a two-digit number which does not begin with 0. A clue outside the grid represents the sum of the digits in the first X cells seen from that clue, where X is the first cell seen. (Eg if r1c5 is a 5 then the IF clue is summing the first 5 cells in its column.) Digits in a cage do not repeat and sum to the cage total, which is given in the leftmost cell of the highest row of the cage.
If you prefer to play directly in sudokupad then click below.
