Ключевые слова: achievement, background, battle, black, board, business, challenge, chess, chessboard, competition, concept, cunning, education, executive, fight, figure, game, hand, hobby, idea, intelligence, king, leader, leadership, leisure, move, pawn, piece, planning, play, politic, power, professional, queen, sport, strategic, strategy, success, thought, victory, white, win, winning, wood,