Checkers for the Invalid (Aug, 1951)
Checkers for the Invalid
Checkers or chess can be played by invalids and blind persons with slotted boards that hold the pieces in place. Each square is numbered with raised numerals so the blind can identify them. The black pieces have one flattened side for identification by touch. The key slots hold the pieces in place even though the board is tilted as it would have to be when used by many bedridden persons.