Logic Masters Deutschland e.V.

This puzzle was set about a year ago based on a conversation with damasosos92 determining whether this type of break-in was possible with a Quattroquadri grid. As it turns out, it is!

Ratings, comments, and feedback are much appreciated! Please feel free to reach out to me on Discord if you have any comments or questions. Please also feel free to try my other puzzles here.

Rules:

• Quattroquadri sudoku: Place the digits 1 to 9 once each into the 3x3 boxes. Digits may not repeat in the same row, column, or box of the 6x6 grid.
• Anti-diagonal: Each of the two marked diagonals contains only 3 distinct digits.
• Arrow: Digits along an arrow must sum to the value in that arrow's circle.
• Killer: Digits in cages must not repeat, and sum to the small number in the top left corner of the cage.

SudokuPad: https://sudokupad.app/zroqrn8dgg

Note: In SudokuPad, the killer calculator may not give all valid options for cages due to limitations of the software. Solver beware!