Lime Sudoku Puzzles by KrazyDad

Here are hundreds of free Lime Sudoku puzzles suitable for printing.

Lime Sudoku is my version of Minesweeper Sudoku, also published as Mine Sudoku and Blueberry Trio. It is a cross between Sudoku and the 1990s game Minesweeper.

These puzzles come in three difficulty levels, Easy, Medium, and Hard. You'll also find a Jigsaw variation, and a set of Variety books which contain 6 different varieties per book (classic, center-dot, x sudoku, windows, jigsaw, and jigsaw+windows).

The rules are pretty simple:

1. The puzzle has three limes in each container (row, column, and block).
2. The numbers on the puzzles indicate the number of LIMES adjacent to that cell. Cells with clue numbers do not have limes in them.
3. Each puzzle has a unique solution, which can be found without guessing nor making use of trial-and-error.

Each set of 100 books is sorted roughly by difficulty — the puzzles get more difficult as you progress from book 1 to 100. Regardless of the difficulty level, there is always a single unique solution that abides by all of above rules.

Want to save some trees? Try the interactive version of these puzzles.

I have been using this puzzle variety to teach puzzle construction in Python, in a series of instructional YouTube videos.