Ключевые слова: adult, age, background, battle, board, brain, chess, chessboard, clock, closeup, competition, competitor, contest, decision, education, enjoy, entertainment, event, focus, game, hand, hobby, indoors, intelligence, leisure, lesson, logic, male, man, match, middle, move, person, piece, pieces, playing, professional, selective, senior, skill, smart, sport, strategical, strategy, success, table, teacher, timer, tournament, winner,