Logic Masters Deutschland e.V.

Its my birthday today!
So to celebrate here's a puzzle themed on the third day of the third month.

Rules:

Fill the grid with the digits 1-7 such that every row and column contains exactly three 3s and one of every other digit.
Fill each box with up to 3 unique digits.

Excluding 3s, digits in a cage sum to the given total; 3s do not contribute to the cage sum. Digits may repeat within a cage.

Play on SudokuPad

Have fun solving!