SPECIAL THANKS to programmer Phil Bordelon, who helped program and debug these variations. You can use the formatting option on the download page to produce foldable booklets that conserve paper and ink. My puzzles are provided in 1-per-page format. All these puzzles have a single unique solution. The booklets are ordered by ascending difficulty - the puzzles in book 100 are much harder than the puzzles in book 1. If you find the puzzles are getting too hard, move up to Book #1 of the next volume, and they'll get easier again. Each booklet contains a collection of eight different puzzles, 1-per-page, with a page of answers in the back. You can report problems or mistakes with this website, suggest new features or new puzzles, get periodic announcements from me, or discuss the theory-of-puzzles and other deep thoughts. If you find they are too easy, skip ahead by 10 books or so. The Krazydad Discord server is a new place where you can talk to me, and meet other people who are interested in puzzles. If you are new to these puzzles, I recommend you start with Book 1. For example if a row contains the numbers 62 9 345 1 78, the. These booklets are in PDF format and need the Adobe Acrobat Reader to view or print. These extra clues, on the outside of the main grid, indicate the sum of the squares between 1 and 9 in the corresponding row or column. Each of my books contains a collection of eight sudoku puzzles, 1-per-page, with a page of hints and a page of answers in the back. On this page you'll find four puzzle variants that all use Sandwich clues. I've created a few additional variants here, all named after famous artists whose work was framed.Įach collection is ordered by difficulty, with the easiest puzzles in Book 1, and the hardest in Book 100. Here are hundreds of free Sandwich Sudoku puzzles suitable for printing. The largest clue is 24, which means that the numbers must be 7+8+9, and the smallest is 6, which means the numbers must be 1+2+3.įrame puzzles have the interesting property that the number of givens for the puzzle can be significantly smaller than a regular sudoku (and sometimes there are no givens at all). If you use logic you can solve the puzzle without guesswork. 3-by-3 block contain all of the digits 1 thru 9. For example if a row contains the numbers 629345 178, the left clue would say 17, which is the sum of 6+2+9, and the right clue would say 16, which is the sum of 1+7+8. Easy Sudoku Puzzles by KrazyDad, Book 24. These extra clues, on the outside of the main grid, indicate the sum of the outer three squares in the row or column adjacent to the clue. On this page you'll find four puzzle variants that all use Frame clues.

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

Krazydad sudoku easy