Ключевые слова: background, battle, black, board, boss, business, challenge, checkmate, chess, chessboard, competition, concept, decision, fight, game, idea, intelligence, king, kol, leader, leadership, management, manager, move, pawn, piece, play, power, progress, sport, strategic, strategy, strength, success, successful, tactic, team, teamleader, teamwork, victory, win, winner,