Logic Masters Deutschland e.V.

This one goes out to all you Tetris-heads out there! If you're wondering, the title is a reference to this. Comments and ratings are much appreciated, and please check out my other puzzles here. Enjoy!

Rules:

Each row and column contains the digits 0–7. Every cell belongs to a four-cell region ("tetromino"). No two regions of the same shape, including rotations and reflections, share an edge. Digits may not repeat in a tetromino. Clues in the top-left corner of a cell give the sum of the digits in that cell's tetromino. These clues appear in the uppermost row of the region.

Solve on SudokuPad

Puzzle: