Ключевые слова: aged, alzheimer, bearded, blur, board game, brain, caucasian, chess, chess figures, 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,