Researching about different codes has been a bit of a refresher course for me. I love puzzles and working things out, and I really enjoy working out puzzles for mystery / unknown geocaches - some of the puzzles are ingenious, but quite often you have to be on the same wavelength as the puzzle setter. I remember watching a little snippet of Only Connect about 10 years ago and wondering what it was all about, as I really couldn’t work out what was going on. However, over time, we started watching it, and learnt about the way the game was played and we made the connections that enabled us to solved the puzzles. Admittedly, some of the connections are tenuous at times - and I wonder how on Earth anyone can see the connection in just one or two guesses. Working things out and using logic to do so is a skill - it is something that can be learned. I was - and still am - in awe of people doing cryptic crosswords; my grandad used to do them, but I could never work them out. A teacher...