数独は脳細胞をつくる？

As Minds Age, What's Next? Brain Calisthenics
2006/12/27
http://www.nytimes.com/2006/12/27/health/27brain.html

Can Sudoku generate new brain cells?
2007/02/23
http://media.www.stateronline.com/media/storage/paper867/news/2007/02/23/Opinion/Can-Sudoku.Generate.New.Brain.Cells-2738530.shtml