Ключевые слова: background, battle, challenge, check, chess, chessman, chesspiece, color, competition, concept, creative, different, fight, figure, figures, game, grey, group, hierarchy, hobby, intellectual, king, leader, leadership, leisure, many, mental, mind, move, nobody, object, pawn, piece, pieces, plan, play, power, silver, skill, smart, sport, strategy, success, tactics, victory, war, win,