This puzzle is the puzzle I submitted to Round 1 of Agent's Puzzle Agency Championship(PAC).
Rules:
Normal Sudoku Rules apply.
Killer(Knapp Daneben): Digits in cages must sum to one less or one greater than the number in the top-left corner of the cage. Digits in cages may not repeat.
XY-Difference Pairs (Knapp Daneben): A pair of horizontally connected cells separated by a diamond has a difference of one less than or one greater than the leftmost digit in its row. A pair of vertically connected cells separated by a diamond has a difference of one less than or one greater than the topmost digit in its column. Not all diamonds are necessarily given.
Play the puzzle on SudokuPad.
Solution code: Box 8
on 8. October 2025, 16:33 by glum_hippo
This was very lovely. Knapp Daneben XY-Differences have a lot of potential!
on 24. August 2025, 14:58 by Silverbyte
I think this puzzle is very elegantly clued , quite beautiful and also very fun to solve. Recommended
on 24. August 2025, 10:30 by Agent
Fun puzzle with a good logical flow!