The puzzle is available to solve online or download here.
Hello everyone. I hope you will forgive this impostor for bringing you the blog for a very special puzzle. When I agreed to cover for scchua I had no idea it would be number 30,000. Once I realised I felt a bit sheepish for taking this in place of one of the regular Guardian bloggers. But as it’s an Arachne I admit I don’t feel too bad!