The AlogO "Puzzle Calendar“.
As in every year, we have again thought up something special for our wall calendar. Every month we would like to take your mind away from other things for a brief spell with a puzzle. We will send you the individual puzzles to solve by email every month. Look forward to them, some of the puzzles are genuinely tricky...
Of course, we will provide the answer the following month. And you can also look up the answers to any of the puzzles at any time on our website (and find the associated puzzles).