Application for knight-bishop checkmate

I think an application in which the user plays with a knight, bishop and king and the computer has just a king would be very useful.  The king would automatically move toward the center (or even better-- the corners of the opposite color the bishop) and the user would need to checkmate.  This would allow people to practice such a checkmate situation so they can do it quicker and easier.  It seems like a really easy program to make.  Does anyone know if it exists?  Thanks

http://www.chessvideos.tv/endgame-training/bishop-knight-checkmate.php

Just plug the position into any engine.

Ah yes thanks

Here's another one. It can be good to try a couple different ones because different programs will try different defenses.

http://www.chess-poster.com/chess_problems/mate_king_and_bishop_knight.htm

I got 42... phew, just barely :).

I could imagine doing a Knight/Bishop endgame checkmate in Blitz...

Actually, I think other harder checkmates than the BNK vs K is QK vs RK Might want to practice that...

I've done that one vs a regular computer (and in a club game before) -- vs a computer designed to make it hard though I failed miserably every time.

This is just what chess.com provides for his premium users!  

I've created a "costum" app in chess.com, with  (analyse+finish vs computer) combination  It works well! https://www.chess.com/play/computer?moveList=f4e5&fen=8%2F8%2F2k5%2F5N2%2F2B2K2%2F8%2F8%2F8%20w%20-%20-%200%201&black=0

How do you flip the board? I would like to practice doing the checkmating.