Puzzles on this page are at the difficult end of the scale. Take your time with them and always feel free to email us to ask for a nudge. If you do, a screenshot of your current progress will be very helpful! Puzzles are added in reverse chronological order so newer puzzles are at the top. This page includes both our puzzles and puzzles set by our students. If no author is shown, the puzzle was set by FullDeck and Missing a Few Cards