A mate in three problem

Another one of mine, not particularly difficult considering the material on board.

White to play and mate in three moves:

I can't move the pieces for whatever reason...but here goes;

1.Bh2..g1->Q -- or whatever else he wants, doesn't matter because...

2.Bxc7#(Bc7# if black moved the c pawn.)

Looks like a mate in two not a mate in three.

Hmm... thought I submitted my solution, but anyways here it is again.

1.Na3! (to block the a pawn from moving) (any pawn move)

2.Bh2! (any pawn move)

3.B(x)c7

1 Bh2??? a3.

So, 1 Na3 any move, Bh2 any move 3 B(x)c7

[edit pipped at te post]

RyanMK and Rooperi - correct!

Duh, Missed that one!

 Good call, have to block with the knight first.