Normal sudoku rules apply. Each of the letters B, C, D, J, K, O, S, T, and U represent a distinct digit from 1-9. Shaded regions with the same shape have identical digits in the same positions, without rotation or reflection. Digits in a large green circle must appear in the four cells surrounding the clue. If a digit appears more than once in the clue, it must appear at least that many times in the four surrounding cells. Digits separated by a smaller white dot must have the difference indicated by the dot.