PuzzleDonkey
PuzzleDonkey
Some of you might remember PuzzleDonkey (http://www.puzzledonkey.org/) from a few years ago - there were four contests of 100 puzzles each before it vanished off the face of the internet. Now it's back, with 100 of the best puzzles from the first time round, and more coming soon. There are all kinds of different types of puzzles so it's pretty varied. Enjoy!