Logic Masters Deutschland e.V.

Thanks to Scojo's weekly puzzle prompt and Zetamath's puzzle MIA for inspiration for this puzzle.Thanks to all my testers for their time and feedback.

Puzzle trivia: Wurtzite is a naturally-occuring crystal which is harder than diamond.

Rules:

Normal Sudoku rules apply (place digits 1-9 once each in every row, column, and 3x3 box).

Draw some cages in the grid. A cage is an orthogonally-connected group of cells such that each cage:

• contains exactly one cage total
• touches at least one white dot
• does not overlap any other cage

Digits in a cage may not repeat and sum to the cage total. Small values in cell corners are cage totals (a '?' can be any value). Cage totals can appear in any cell of a cage (not necessarily the top-left cell).

Each side of every dot belongs to a cage, and the two sides of each dot belong to different cages. Cells separated by a white dot are consecutive.

All white dots separating cages are given:

• if consecutive cells in are in different cages, they will always be separated by a white dot
• otherwise, consecutive cells will never be separated by a white dot

Comments are always welcome. I'd love to hear your thoughts about the puzzle. Have fun!

Streamers have permission to use this puzzle. Recommended betting cell for streaming is r7c9.

Play in SudokuPad