about 2 weeks ago - 2 comments
Samurai 8-grid Calcudoku puzzle
Here’s probably the largest Calcudoku puzzle you’ve ever seen! It’s made up of 8 underlying 9×9 grids, each of which must have 1 to 9 placed into each row and column, and then on top of this I’ve added the familiar Calcudoku regions.
For each Calcudoku region just place numbers such that the More >
about 3 months ago - 1 comment
Inequality Calcudoku puzzle
Here’s a fun little puzzle – a Calcudoku Inequality puzzle.
Just place 1 to 6 into each row and column whilst obeying the bold-lined cages’ operator totals. These give the result of applying the stated operator between all numbers in that region, so for example the result of adding together all the squares in More >
about 4 months ago - 3 comments
Calcudoku 2 puzzCalcudoku 1 puzz
Today I was producing a few easy Calcudoku for a new book I’m working on, and had some left over so I thought I’d post them here. Nothing too special, but there’s a little bit of nice symmetry, which you don’t seem to generally find in published Calcudoku puzzles. (I don’t More >
about 7 months ago - 3 comments
Toroidal Number link 8×8 puzzle
Number Link at sizes up to around 10×10 may not necessarily be hugely challenging for everyone, but I bet you now that this puzzle certainly will be! Despite being only 8×8 it is really very difficult indeed. Or perhaps that’s just me – I’d love to hear that someone finds it More >
about 9 months ago - 2 comments
Toroidal Sudoku puzzle
Sorry for the lower quantity of puzzles this past week – I’ve been working on completing a new book so I’ve had to focus on that instead, but next week I’ll hopefully get back up to my five-a-week average! I’m not feeling very inspired in terms of being too original right now so More >
about 10 months ago - 1 comment
Double Toroidal Killer Sudoku Pro 8×8 puzzle
This puzzle certainly won’t be to everyone’s tastes, but it’s a double toroidal killer sudoku pro. Why double? Because there are toroidal jigsaw-shaped Sudoku regions, and there are toroidal jigsaw-shaped Killer Sudoku Pro cages. In other words, some of them wrap around the edges of the puzzle. It’s also More >
about 10 months ago - 5 comments
Toroidal Killer Sudoku 10×10 puzzle
So far all of the “pure Sudoku logic” in my puzzles posted here has been pretty gentle. Well I decided that it was time to change that, but of course I wasn’t about to do that with a common garden puzzle! So I’ve applied some harder logic to this 10×10 Killer More >
about 10 months ago - 5 comments
Samurai Toroidal 13-grid Killer Sudoku Pro puzzle
Now this is a puzzle I can state with confidence that you won’t have seen before. It’s a Killer Sudoku Pro puzzle – i.e. a Killer Sudoku with -, x and / regions too; but more than that it’s a Samurai Killer Sudoku Pro made out of 13 grids; and More >
about 10 months ago - 3 comments
Toroidal Killer Sudoku Pro puzzle
Here’s something that I’ve actually never seen before – Killer Sudoku with toroidal cages. Perhaps there’s a good reason for that, but it’s time to find out. This is actually a Killer Sudoku Pro, so it doesn’t just involve addition – but you cannot repeat a number in More >
about 10 months ago - 3 comments
Consecutive Samurai CalcuDoku puzzle
Now this is an interesting puzzle! At first glance it looks like it can’t possibly have a unique solution, since there are no givens and only 9 cages on the entire 3-grid Samurai puzzle (made up of 6×6 grids). But in fact it uses only simple logic to solve, and it unravels More >
about 3 months ago
I enjoyed the puzzle.
Just wanted to make something clear: When I say, “This puzzle is too easy, make them harder.” … That doesn’t always translate to “Make it a toroidal”.
Something you might try: I found a couple of “Mystery KenKen” online where you get the cage number but not the math operator. The 9×9 was very interesting.
about 3 months ago
That’s actually really funny, about the toroidal puzzles!
Truth be told I haven’t yet made any missing operator Calcudoku (i.e. KenKen, TM) but it is definitely on my to-do list! Of course it’s not really any more instrinsically complex than regular Calcudoku – you’re just expanding the search space for each clue a little (or a lot!).