Possible Clues:

• Working actor's introductions to Independent's crossword puzzle
• A short indication of approval heard for puzzle
• Puzzle given a couple of marks for wrong and right answers, we hear
• Puzzle solved by opening letters
• Poem where initial letters of each line spell out a word
• Apparently creative rhyme of sorts, the initials counting?
• Word puzzle produced by Socratic lunatic
• Puzzle producing what sounds like a bad-tempered sign of approval
• Socratic version of what 16 across is
• New version of Socratic puzzle