I buy the paper on a Saturday so got stuck into the Maskarade jumbo without even noticing that there was also an online-only Prize. Slow to start, but very enjoyable and finished it yesterday. There's a forum thread about it, but it doesn't follow same conventions as here: no FOI, LOI, COD, and a request to have every clue asked about to be written out in full.
So I only really started to look at the prize, having found it online and printed the pdf, last night. I solved precisely none before coming to the forum, have now got 25a and 18d from help here, and feel extre.ely stupid looking at all the other clues. Perhaps 2d includes "ra" as crag without its edges, but I think I'm going to give up. Haven't had such a near-total fail on a Prize for years: I usually get it finished eventually, sometimes by mid-week. Will look at the answer on 30 Aug, and try to work out what I've been missing. Perhaps I used up my week's ration of solving ability on the jumbo!
And I sent an email grumbling about the tiny font used for the numbers in the not-very-jumbo grid.