Logic Masters Deutschland e.V.

[This puzzle was set on my stream with lots of input and help from my chat. Thanks for all the suggestions everyone!]

Non-standard Sudoku Rules: Into each non-gray cell place a digit from 1-9. Digits cannot repeat within a row, column, or box.

Ten Clumps: Every digit in the puzzle is part of an orthogonally connected clump of digits that sums to 10. Digits may repeat within clumps if allowed by other rules. Clumps do not overlap with other clumps.

Circles: A circled cell gives the number of clumps in the up to 9 surrounding cells (including itself).

A sample of what this might look like for a small part of the grid is shown below:

Clarifications: -) Gray cells will not contain digits in the completed solution. -) The boxes in which digits cannot repeat are the same as the normal 3x3 sudoku boxes.

Have fun, leave a comment if you enjoy the puzzle!

Play this puzzle on SudokuPad

PS: I stream solving sudoku like puzzles three days a week. You can check out the channel, as well as some videos I have made about setting puzzles, at my YouTube channel here.