Logic Masters Deutschland e.V.

Rules:

• Standard 6x6 sudoku rules apply.
• Draw non-overlapping cages around groups of orthogonally connected cells. The sum of a cage is represented by "??" on its upper leftmost cell (the leftmost of the cells in the uppermost row). Each cage has a unique number of cells and a unique sum, and each cage sum is a 2-digit prime number. Digits may repeat within a cage.
• The sum of the digits along the negative diagonal is also a prime, and is not equal to any of the cage sums.
• Cells separated by Vs sum to 5. Not all Vs are necessarily given.

Play on sudokupad here: https://sudokupad.app/wd1usnlb4x