Chess challenge from a newspaper in 1927 (win in 2 moves) I have been trying to solve this for a long time, but can't find a solution. How can white force a checkmate in 2 moves?

1R6/4p3/2pkB3/4n1N1/8/1N2K1B1/8/8 w - - 0 1
Ask yourself: what would Black do if he were to move? After 1... Kc7, 2. Bxe5 is mate. His other option is 1... c5, threatening to escape with 2... Kc6.

The solution:


   1. Nc5! blocks the c-pawn. Black gets the additional option of 1... Kxc5, but after that, 2. Ne4 is mate.


(I can post an interactive version, but that doesn't work with spoilers. And it's a good visualization exercise.)