about 2 months ago - No comments
Jigsaw 6×6 puzzle 2Jigsaw 6×6 puzzle 1I just made some Jigsaw Sudoku puzzles for a book and had a couple spare which I thought I’d post here. Just place A to F once each into every row, column and bold-lined jigsaw shape.
about 1 year ago - No comments
Sudoku 6×6 puzzleJigsaw 6×6 puzzle
I had a couple of 6×6 Sudoku puzzles left over when making issue 58 of Sudoku Pro magazine, so I thought I’d post them here.
Just place 1-6 into each row, column and bold-lined area.
about 1 year ago - No comments
Sudoku 16×16 puzzle
And to complement the Killer Sudoku I posted a moment ago, here’s a 16×16 puzzle for those who like these. Just place 1 to 9 and A to G in each row, column and 4×4 box. Only “scan and place” logic is needed for this, I promise!
about 1 year ago - No comments
Samurai 8X puzzle
When I was making Sudoku Xtra 10 I wanted to put in a really big Samurai Sudoku puzzle. In the end because I had a square page area available beneath the instructions I went with a 13-grid one (just as a one-off to see what sort of reaction it got!) but I had More >
about 1 year ago - No comments
Killer Plus Minus Samurai puzzle
If you’re a Sudoku Xtra reader you’ll have seen these in their regular 9×9 form in both issues 5 and 6, but this is the first time I’ve made a Samurai one, and the first time I’ve posted one here I think.
This is essentially a regular Killer Sudoku puzzle, except that More >
about 1 year ago - No comments
Killer Sudoku Pro 6×6 Samurai puzzle
It’s been quiet here recently – much of my effort has been going on my UK General Election site, How To Vote, although Sudoku Xtra 6 was out on Saturday too. Anyway, there are still 10 days to go to the election but after that I’ll get some time back!
However I thought I should More >
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
Toroidal Killer Jigsaw Toroidal puzzle
A while back someone asked for some variant toroidal patterns on PuzzleMix, so I was just adding a couple of them to the daily puzzles section when it occurred to me that I could put up a few toroidal killer sudoku too, for a change. However I then realised that the More >
about 1 year ago - 1 comment
Samurai Star XXXXX puzzle
I haven’t posted a puzzle for a week (it’s been a busy week, mind!) so it’s time to make up for that, just in time for the weekend.
In this puzzle the aim is pretty simple: place 1 to 9 in each set of 9 squares starting and ending with a bold line, More >
about 1 year ago - 2 comments
I wrote quite a lot yesterday about whether you “needed” the X in some Sudoku-X puzzles. I promised that I’d follow up with the result of analysing a stack of Killer Sudoku-X puzzles, and so here is that result.
I picked 64 Killer Sudoku-X puzzles (52 for the daily puzzlemix section plus 12 for the weekly More >
about 2 years ago
That was fun. I am enjoying the samurai flower pattern.
One rule I have found with this pattern is that for the long rows/columns, Any triplet set of digits within a box must match the box that is 3 distant (in any order).
I guess you could call this the Samurai Flower Rule if you wanted to. Thinking along these lines, you can apply this to other overlapping samurai patterns (with heavy modification of course). I was using this a great deal for the earlier skyscraper samurai puzzles.
about 2 years ago
A great puzzle made more enjoyable by the fact that I took you up on your challenge and managed to complete it without pencil marks!
about 2 years ago
The no pencil mark challenge was great. I managed to solve this one without them as well, though in a little more time.
about 2 years ago
One thing I’ve been meaning to work out is whether it’s actually necessary to state that there is a centre grid, or whether it just falls out of having 4 grids around the outside already. If so, it will simplify the puzzle description and leave something more for the solver to discover as they go.
I could easily see if this is likely to be true by building lots of test puzzles, but I think a more reasoned approach would be better.