Ключевые слова: adult, black, board, caucasian, challenger, challenging, check, chess, chessboard, chin, competition, competitor, concentrate, concentrating, concentration, contemplating, game, hand, head, hold, holding, king, male, man, men, middle aged, opponent, people, person, piece, pieces, play, player, playing, queen, resting, serious, set, smart, strategic, strategy, think, thinker, thinking, thought, thoughtful, white, wood, wooden,