Ключевые слова: background, battle, black, board, brain, business, businessman, challenger, chess, chessboard, chessman, competition, concept, confident, corporate, detail, fight, game, hand, idea, intelligence, king, knight, male, man, management, match, men, mind, move, office, pawn, pensive, people, person, piece, play, player, power, queen, set, strategic, strategy, success, think, thinking, thoughtful, white, win, winner,