Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Digits in cages sum to the small corner clue.

Sandwich clues outside the grid sum the digits between 1 and 9 in that row/column and must be deduced by the solver ('??' represents a total greater than ten).

When the grid is complete the units digit of each sandwich clue must be taken out of its row/column so that the cages and sandwiches sum to their correct totals. All constraints must be valid after these digits have been removed.

(For example: if the r5 sandwich clue is '23' the 3 in r5 will be taken out of that row.)