Ключевые слова: aged, alzheimer, bearded, blur, board game, brain, caucasian, chess, chessboard, dementia, disease, diseased, disorder, disorientation, elderly, emotion, figures, game, grey hair, health, home, ill, illness, indoors, man, medical, memory loss, mental, mind, neural system, neurology, one person, parkinsonian, pensioner, play, problem, psychology, senior, sick, sickness, strategy, symptoms, syndrome, tense, therapy, think, thoughtful,