Incomplete sudoku surprisingly will bring praise (5)
I believe the answer is:
kudos
'praise' is the definition.
(kudos is recognition or praise for something)
'incomplete sudoku surprisingly' is the wordplay.
'incomplete' means to remove the last letter.
'surprisingly' is an anagram indicator (a surprising ordering of the letters).
'sudoku' with its last letter removed is 'sudok'.
'sudok' anagrammed gives 'KUDOS'.
'will bring' is the link.
(Other definitions for kudos that I've seen before include "Distinction" , "Pats on the back" , "Laudation" , "Prestige; recognition" , "Great prestige" .)