about 11 months ago - 1 comment
Calcudoku+ 7×7
I had a request for a 7×7 Calcudoku-esque puzzle that uses only + operations, so I thought “why not?”. And here it is.
about 1 year ago - 1 comment
Samurai 3-grid Calcudoku 6×6 puzzle
I’ve been posting a few new varieties of Sudoku puzzle in the daily puzzle section of PuzzleMix (i.e. the subscription section, which costs less than £1 a month for well over 1,000 puzzles a year). These aren’t especially unusual variations, but I’ve done a few different mixes (e.g. Sudoku-X 12×12 and More >
about 1 year ago - 3 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 2 years 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 2 years ago - 2 comments
Toroidal Calcudoku puzzle
Another easy Calcudoku in terms of its logic, although this one is a little trickier in practice since it’s 7×7 and is toroidal, meaning that some of the regions wrap around the edges of the grid and continue on the square directly opposite on that row/column. Other than, just place 1 to 7 More >
about 2 years 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 2 years 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 2 years ago - 3 comments
As easy as 11, 22, 33 Killer CalcuDoku
Here’s a relaxing puzzle for a Sunday… or maybe not! Can you complete this Killer CalcuDoku puzzle made up of 1s, 2s and 3s?
Place 11, 12, 13, 21, 22, 23, 31, 32 or 33 into each square so that the result of applying the specified operation to each More >
about 2 years ago - 1 comment
Killer CalcuDoku +/- 6×6 puzzle
There’s a lot of very interesting puzzle space to explore between the extremes of Killer Sudoku and KenKen (a trademark of Nextoy LLC, so I will always refer to this as CalcuDoku from now on, unless anyone suggests a better name!).
I’m going to define two in-between puzzles, giving a continuum like More >
