Logic Masters Deutschland e.V.

This puzzle is the direct sequel to Chaos Destruction. The inspiration for this puzzle was a simple question: what if Chaos Destruction had negative constraints? It is the second puzzle I ever set using my Destruction ruleset, and it is a considerable step in difficulty.

The rules are as follows:

• Place the digits 1-9 once in every row, column, and marked diagonal.
• Chaos Destruction: All given regions must be "destroyed" by making sure they do not contain all the digits 1-9. The grid also consists of nine hidden, orthogonally connected regions that each do contain all the digits 1-9. Digits in circles represent how many of its orthogonally and diagonally adjacent cells, including itself, belong to both the given and hidden regions where the circle resides (i.e., where they overlap).
• Proper Destruction: All circles have been given. Additionally, every region is destroyed by a unique digit (i.e., no two regions may share the same repeating digit).


The puzzle is available on SudokuPad with answer check on only the sudoku digits but also available on Penpa+ with answer check on sudoku digits and hidden region boundaries using the Green Edge tool (mark the perimeter/border). Have fun destroying!