14+8. (RV) Matt in 2 Zügen
If black may castle, then his last move must've been b7-b5, because
c6xb5 requires too many captures (Bc1 was captured on his home-square).
So #2 with 1. cb6 Kd8/c6 2. Qf8#. If black may not castle, then #2 with
1. OO ~ 2. Rf8#.
Solution by Philippe Schnoebelen
