I'm always slower to start these puzzles than the rest of you, so I apologise for my late arrival. I try to do the puzzles without help from the blog until I get stuck.
I have managed to complete the grid with the exception of 7Dn, 20Ac, 28Ac and 37Ac. I have identified 11 of the 12 clashes but lack the 12th. I read in the blog that the "13th" clash is in 20 Ac, but have not yet cracked that.
Not yet into the anagrams of the 12 clashes or the rest of the endgame, but would be grateful for a few steers towards getting further down the line. Thank You in advance.