Crossword Genius

An ulterior motive for what hide-and-go-seek champion might have up his sleeve (6,6)

Ross

I believe the answer is:

hidden agenda

I'm a little stuck... Click here to teach me more about this clue!

'an ulterior motive' is the definition.
(I've seen this before)

'what hide-and-go-seek champion might have up his sleeve' is the wordplay.
I cannot quite see how this works, but
an anagram of 'and' is 'nda' which is present in the answer.
This explanation may well be incorrect...

'for' acts as a link.

Can you help me to learn more?

(Other definitions for hidden agenda that I've seen before include "Concealed intentions" , "Ulterior motive" , "followed in secret meeting?" , "Secret motive behind one's actions" , "Undisclosed reason" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.
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