Ключевые слова: analysis, background, black, board, boy, business, businessman, challenge, chess, chessboard, child, children, competition, concentration, conceptual, dark, decision, face, game, hobby, intelligence, intelligent, kid, learn, logic, man, men, opponent, opposition, people, person, piece, planning, play, player, playing, portrait, psychology, side view, smart, strategic, strategy, table, teen, teenager, think, thinker, thinking, wood, young,