Ключевые слова: activity, black, board, casual, challenge, challenger, checkered, chess, chessboard, classic, cognitive, community, competition, concentration, development, engagement, entertainment, focus, friendly, fun, game, indoor, interaction, leisure, match, mental, mind, move, opponent, pieces, play, player, players, process, recreation, rules, skill, skills, social, sport, strategic, strategy, tactics, thinking, time, tournament, traditional, two, white, wooden,