Sudokus and Crosswords Sharpen the Brain for Adults 50 and Over
Research on more than 19,000 participants found that the more regularly adults 50 and over did Sudoku and crosswords, the better than brain function. The results were published in two linked papers in the International Journal of Geriatric Psychiatry.
https://www.sciencedaily.com/releases/2019/05/190516082349.htm