Strategy game (5)
I believe the answer is:
chess
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">strategy game</span>' is the definition.<br/ ><span class="explanation-format__explanation">(chess is a game of strategy)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for chess that I've seen before include "Pieces moved in this" , "Sixteen-men-a-side game" , "Board game of 13, 16 and 21" , "Ancient war game whose name may have derived for the Persian for 'king'" , "show" .)