From SudokuWiki.org, the puzzle solver's site

20th Thank you

Oh my goodness.
Twenty years.
Time slips by.

But it's been a blast making puzzles and solvers with you all and I want to send a BIG thanks to everyone who has helped contribute to the site, played the puzzles and questioned the strategies - over these two decades!!

Will write a bit more shortly - just uploading a new layout and CSS that will help standardise the look in Apple Safari iPads.