Ключевые слова: abstract, background, battle, black, board, boss, business, challenge, checkmate, chess, chessboard, choice, company, competition, concept, corporate, decision, defeat, defense, design, difference, fight, game, gold, group, idea, intelligence, king, leader, leadership, manager, marketing, money, object, objectives, play, power, progress, queen, silver, strategy, strength, success, successful, team, teamwork, think, victory, white, winner,