I didn’t want this to be the first year without a Christmas puzzle on the blog – so here you go.
To be honest, I don’t expect anyone to solve it, it hasn’t been checked and there might well be gremlins in there. Sorry if there are any snafus – I’m sure you’ll work it out, you are a metagrobologist after all… hope you have fun!
Usual arrangements: email me your answer to allard *DOT* walker ~AT~ gmail &DOT& com - if anyone gets it right, there'll be bragging rights - puzzles for the first one past the post and a random draw from all participants.
... and I'll publish what I thought the answer was at the end of the year.