Normal 6x6 sudoku rules apply. Digits may not repeat along the blue diagonal. Circle one cell in each row, column, and box. Digits may not repeat in circled cells. Clues outside the grid indicate the sum of the first X digits in the corresponding direction, where X is the digit placed in the circled cell in that row or column. A question mark may represent any digit from 0 to 9, but for double digit numbers, the first digit may not be 0.
If you prefer to play directly in sudokupad then click below.
