Bit of lather over, on occasion, Knut puzzle (6)

I believe the answer is:

sudoku

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'puzzle' is the definition.
(I know that sudoku is a type of puzzle)

'bit of lather over on occasion knut' is the wordplay.
'bit of lather' becomes 'sud' (I am not sure about this - if you are sure you should believe this answer much more).
'over' becomes 'o' (cricket abbreviation).
'on occasion' indicates alternate letters.
The alternate letters of 'knut' are 'ku'.
'sud'+'o'+'ku'='SUDOKU'

Can you help me to learn more?

(Other definitions for sudoku that I've seen before include "Boxing contest" , "Numerical puzzle" , "Popular logic-based puzzle" , "(Usually) nine-by-nine numbers puzzle" , "9 x 9, 1-9 puzzle" .)

I've seen this clue in The Independent.

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