Expresses a point on board (6)
I believe the answer is:
speaks
'expresses a' is the definition.
I can't tell whether this defines the answer.
'point on board' is the wordplay.
I cannot quite see how this works, but
'point' could be 'peak' (synonyms) and 'peak' is found in the answer.
'on board' could be 'ss' (I've seen this in other clues) and 'ss' is found in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for speaks that I've seen is " Utters".)