Can you solve it? The deductive decade – ten years of Monday puzzles

Happy birthday to us

Forgive me the indulgence of celebrating ten years of this column. Toot toot!

I began posting biweekly brainteasers at the end of May 2015, originally addressing you folk as “guzzlers” – Guardian puzzlers. The cringy coinage didn’t stick, but the column did, and here we are a decade and 260 columns later.