Since I implemented Sudoku-X in SudoCue, I was wondering where people would be able to find these puzzles on a regular basis. To my surprise: nowhere! Only websudoku.com has a weekly feature of variants, and Inertia only pretends to have them, leading you to their desktop program.

So I decided to run my batch generator for a while, and it came up with a wonderful series of puzzles, with various symmetries and a wide range in difficulty levels. I decided to focus on 2 difficulty levels, one for the beginners and one for the advanced players, keeping them both happy on my site.

Since all my puzzles are themed, I needed one for this new feature. X-Rays, X-Wings, X-Men and X-Files were amongst the candidates. Combining the puzzles with an archive made me choose X-Files, which happened to be problems that needed to be solved. I’m still probing the theme, but there will be more wordplay in this arena. I’m full of ideas.

On a side note: The addition of regular puzzles and the rewriting of all the on-site documentation has resulted in a steady growth in visitors. This seems to have a snowball effect, because more and more people discover my site. It must have good pageranks in Google. Quality does pay off in the end.