Re(4): Listener No 4350 - Revelation of John by Elfman IP: 188.8.131.52 Posted on July 4, 2015 at 00:02:47 AM by Patrick Phair
I am with Simon on this one. With the grid full I had nothing to go on. The message said "Use highlighted cells in other clues" but nothing was highlighted. (There was also a suggestion from 23a that the theme might be _EXT, but this remains unclear even after I have read the solution notes.)
After two days I dusted off a spreadsheet I had used to search for the title of Listener 3852 (Torus Spiral by Dimitry), and I was lucky enough to check for two steps to the right and spot SIX, followed by FI[S]VE below it. The other numbers soon followed and gave me the axis of symmetry.
Sadly this was all to no avail since I hadn't checked the anagram of GURGOYLES and put in GARGOYLES instead. Of course the U was unchecked (deliberately?), reminding me of TAPEN which caught me in a similar way exactly 600 puzzles ago.