Forced (to) win

So I was looking at a beginning chess engine that basically picks moves at random and thought: Is there a nontrivial position that this guy would actually win? In other words, where it would be forced to win?

So I came up with this weird set up. Assuming that the computer will always promote to queen, this is a "forced win"! Literally.

Now I wanna get rid of this "always promote to queen" thing without making it dummer than it already is. Any ideas?

Cheers

It's not a forced win.

White can play 3.Rh7... 4.Rh8... 5.Rh7... and so on letting black to win the game.

True. Missed it.

check out puzzle 9 from the holiday puzzler.

http://www.chess.com/article/view/2008-chesscom-holiday-puzzler-answers-and-winners

Black takes the rook with the bishop, forcing the g-pawn to promote.

4. bxa3 is an option

You might get some fun from the examples of this sort of thing Tim Krabbé gives in his chess diary: see number 267 here.

 "forced (to) win" means without any eventual help from black. If "forced win" meant "white wins if black does everything in his power to lose" then every game would be "forced (to) win".