I have an "almost" full grid but haven't a clue what the preamble is talking about at all. Can someone help out please?
Still stuck on 2 of the 5..... 12a B?ACK and 13a ?OTH
The puzzle is almost as complicated as the preamble is convoluted!
When you select the clashing letters work from the centre out for the top left string, then ditto top right, ditto bottom right, ditto bottom left (4 letters each time). This should help you get the theme (3 words in all T?? W??????? G????).