sentence: Strategy is an important part of the game.
sentences_before: Chess is an easy game to learn the moves, but a difficult game to master.
sentences_after: First of all comes the 'openings', about which a great deal is now known. The best-known move, the King's Pawn opening, is the white player moving his king's pawn on e2 forward two spaces to e4. Black can reply to that move in various ways.
concept_name: strategy
headings: Chess Stages of a game