Play as follows:--
1. R--Q 6 2. K--R 7 3. R (R 6)--B 6 (mate).
Black's moves are forced, so need not be given.
From Amusements in Mathematics by Henry Ernest Dudeney.
Play as follows:--
1. R--Q 6 2. K--R 7 3. R (R 6)--B 6 (mate).
Black's moves are forced, so need not be given.