Save your brain power and find all possible candidates for a Calculdoku block with our calculator! Just select the size of your grid, the number of cells in the block, the operator and the target sum, hit Go, and voila – all the numbers you could put in the block will be shown for your puzzle solving pleasure. If you don't know why this is useful, our Calcudoku tutorial will help.
Need more Calcudoku puzzles? Look no further! Get 120 puzzles spread over seven levels of difficulty. One-per-page for maximum space. Click the cover to find out more...