about 1 week ago - 1 comment
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 1 week ago - 1 comment
One of the perennial comments on PuzzleMix is that the diagonal ‘X’ regions aren’t needed in a particular Sudoku-X puzzle, or more commonly in Killer Sudoku X. Well, when I say “perennial” I mean to say that of the more than 400,000 puzzle plays that that comment has been made about 10 times. But an More >
about 1 week ago - 1 comment
Killer Sudoku Jigsaw puzzle
I’ve recently been working on refreshing the content for PuzzleMix.com, my play-online puzzle site, and one of the puzzle types I’ve been making is Killer Jigsaw Sudoku, where you not only have the jigsaw-shaped Killer regions but also jigsaw shapes instead of the regular 3×3 Sudoku boxes.
So I thought it would be a More >
about 1 week ago - 1 comment
Samurai-2 Odd Pair Sudoku puzzle
One of the brand new puzzles in Sudoku Xtra issue 4 is Odd-Pair Sudoku, which I wrote about last week here on my puzzle blog. As well as some regular 9×9 puzzles I also included a large 5-grid Odd-Pair Samurai puzzle, and to illustrate how the puzzle worked I included a More >
about 2 weeks ago - 3 comments
Sudoku Odd Pairs puzzle
Now here’s something I can guarantee you won’t have seen before, because I just invented it! Well, I suppose with a world of people creating Sudoku variants it’s possible there’s been something similar before, but I’ve bought a lot of puzzle magazines and books and never come across it, so More >
about 2 weeks ago - No comments
Sudoku 36×36 puzzle
Giant Sudoku puzzles are one of those things that divide people. With 25×25 puzzles some love them, whilst others simply can’t understand why anyone could ever have the patience to do them. But whatever your personal opinion, they remain popular – even Nikoli (the people who named Sudoku ‘Sudoku’) make them regularly, More >
about 2 weeks ago - No comments
Sudoku 15×15 puzzle
Something plain but unusual – a Sudoku 15×15. I’m sure these must exist, but it occurred to me I’d never actually seen one. So I made one.
The rules are as you’d expect: place 1 to 9 and A to F into each row, column and 5×3 bold-lined box.
There’s no need to make More >
about 1 month ago - 1 comment
I’ve had many, many, many requests over the past years for a book of giant 25×25 Sudoku puzzles, so I have now finally made just such a book available!
Right at the moment it’s only available in printed form, but I’ll have download copies available in the next couple of days – as soon as I’ve More >
about 1 month ago - 2 comments
Samurai Killer Calcudoku puzzle
I haven’t posted much here recently because I’ve been spending my time on Sudoku Xtra, so here’s a large puzzle to fill the void a bit.
This is a five-grid Samurai Killer Calcudoku:
Place 1 to 9 into each row, column and 3×3 box of the five underlying 9×9 Sudoku grids
Place numbers into the Calcudoku dashed-line More >
about 1 month ago - 2 comments
Outside Sudoku 6×6 puzzle
Here’s something new (for me at least) – an Outside Sudoku puzzle. This one’s 6×6, just to get the ball rolling, but I have some larger ones (including some Samurai ones) ready for Sudoku Xtra issue 3!
The numbers outside the grid reveal some, none or all of the numbers that go somewhere More >
about 8 months ago
Yea.
Thank you for the puzzle. I really enjoyed it.
I am getting better at these. What I do is write in the greater than notation when I isolate boxes and the puzzle also becomes a futoshiki. There wasn’t a time in solving where I felt stuck.
I also like the way you had to work in order to isolate 3 of the numbers throughout the puzzle.