![]() Please do not use my puzzles in for-profit publications without my permission. Feel free to reproduce the puzzles for personal, church, school, hospital or institutional use. SPECIAL THANKS to programmer Phil Bordelon, who helped program and debug these variations. 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. 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. ![]() If you find the puzzles are getting too hard, move up to Book #1 of the next volume, and they'll get easier again. If you find they are too easy, skip ahead by 10 books or so. If you are new to these puzzles, I recommend you start with Book 1. I've created a few additional variants here, all named after delicious sandwiches I like.Įach collection is ordered by difficulty, with the easiest puzzles in Book 1, and the hardest in Book 100. Sandwich puzzles have the interesting property that the number of givens for the puzzle can be significantly smaller than a regular sudoku. The largest clue is 35, which means that both 1 and 9 are on the ends (with all the remaining numbers between them). If the clue is zero, you will know that there are no squares between 1 and 9. For example if a row contains the numb178, the clue would say 12, which is the sum of 3+4+5. 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. On this page you'll find four puzzle variants that all use Sandwich clues. You connect horizontally or vertically adjacent dots to form a meandering path that forms a single loop or 'Slitherlink.' The loop must not have any branches and must not cross itself. The puzzle consists of a grid of dots, with some clue cells containing numbers. SPECIAL THANKS to programmer Phil Bordelon, who helped program and debug these variations.Here are hundreds of free Sandwich Sudoku puzzles suitable for printing. Slitherlink is an addictive logic puzzle that was first published by Nikoli in Japan. ![]() 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. ![]() 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 like Slitherlink puzzles, youll probably like my Masyu puzzles, and Galaxy puzzles, both of which also involve spatial reasoning. These booklets are in PDF format and need the Adobe Acrobat Reader to view or print. Each booklet contains six different kinds of puzzles, with the answers in the back. 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. Variety Slitherlink Puzzles by KrazyDad, Volume 1. 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.
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