If you can have Diagonal Sudoku or Sudoku X puzzles, why not have a TriDoku X? Although it looks more like a TriDoku *, I decided to keep the “X” in the name. Perhaps it could be called a TriDoku Star? Whatever you call it, I think the additional rules are obvious: in addition to […]
Here is another variant of Outside Sudoku puzzles: a consecutive Sudoku. I’m sure you are aware of the rules, but lets repeat that the numbers in cells that are connected by the pipe “|” symbol MUST BE CONSECUTIVE. Numbers is cell that are have no pipe symbol between them MUST NOT BE CONSECUTIVE, they have […]
Here is a puzzle that I think deserves a lot of attention: TriDoku! It’s a great puzzle-type but for some reason it’s very rarely seen in the Sudoku world. I want to change that! Even though it may not appear obvious, there are 81 cells in this puzzle. And there are 9 nonets. Just like […]
Today’s puzzle on the Daily Sudoku variants page is somewhat ambiguous. This is why I’m duplicating it here on the main page. Basically, it’s a Classic and Jigsaw Sudoku combination. In addition to 9 Jigsaw nonets, there are 9 classic Sudoku nonets too. You have to use them both in order to solve the puzzle. […]
I announced this one when I posted my first Outside Sudoku puzzle: it’s a non consecutive Outside Sudoku. Even though it looks like a regular Sudoku puzzle, you must follow one extra rule: two touching numbers must not be consecutive. Outside Non/Consecutive Sudoku for Monday, January 18, 2010 – Difficulty: THINKER. Click on the puzzle […]
Another novelty in 2010 – Outside Jigsaw Sudoku. Read the rules of Outside Sudoku first. And then, twist it a little – it’s a Jigsaw (Irregular) Sudoku puzzle! UPDATE: One clarification about the rules of Outside Jigsaw Sudokus: The clues tell you which numbers appear in the 3 closest cells in that row/column. They are […]
Here is something new (for this site) for the New Year: Outside Sudoku. This puzzle is also shown today on the Daily Sudoku variants page, but I thought I should properly introduce it. The rules: 1. For the 9×9 grid all standard Sudoku rules apply. However, you don’t have any starting clues in there! 2. […]
It’s only Wednesday, but I decided to present you with another Sudoku Straights puzzle. Remember that they are shown every Friday on the Daily Sudoku variants page. The rules: 1. Use numbers 1-9. Numbers cannot be repeated in rows/columns. 2. There are no nonets (3×3 boxes) like in other Sudoku puzzles. 3. Black cells do […]
Here is a brand new Sudoku variation as a special Christmas present. Hope you will like it. The rules: 1. Use numbers 1-9. Numbers cannot be repeated in rows/columns. 2. There are no nonets (3×3 boxes) like in other Sudoku puzzles. 3. Black cells do not contain numbers. Therefore, not all numbers 1-9 will appear […]
