Following the comments by the people who considered the Clueless Explosion a little too easy, the page now shows a numerical rating, based on the techniques which are required to solve these puzzles.
Anything above 1300 is "Very Hard". This week you start with a puzzle rated 1705. Good luck!
Ruud
Rating added
Rating added
“If the human brain were so simple that we could understand it, we would be so simple that we couldn't.” - Emerson M Pugh