Doppelblock [DOPP-2-002P]Sorted PuzzlerMarch 11, 2022Arithmetic/Math Puzzle (PDF) Solve Online Solution (PDF) Example Puzzle: Solution: Want more Doppelblock puzzles? Get the puzzle book! If you liked this puzzle, you might also like these books: Previous Post Clouds [CLOU-2-002P] Next Post Classic Sudoku [SUDO-5-005P]