Normal sudoku rules apply. The digits X, Y and Z in pill shapes (reading left to right) signify that rXcY = Z. Eg, if a pill read [825], then the cell in row 8 column 2 would have to be the digit 5. Digits along the negative diagonal (thin blue line) must not repeat. Any set of three sequential cells along the thick teal line must contain one digit from [1,4,7], one digit from [2,5,8] and one digit from [3,6,9]. Cells separated by an X sum to 10. Not all Xs are given.