A Stratagem; an Opening Move in Chess
This page is the CodyCross answer for the clue below from Resorts, Group 552, Puzzle 5 (Marine Life).
Question is: A Stratagem; an Opening Move in Chess
and the answer is: GAMBIT
Word Meaning:
GAMBIT — (chess) An opening in chess in which material is sacrificed to gain an advantage.
Definitions from Wiktionary.