Whoever made this obviously knows very little about chess.
There are no checkmates, you are able to capture your opponent's king, you can't castle, I doubt you can en passant, and you don't even have to get out of check. There is a point system, but it makes no sense. You just move pieces around, and you can't even tell what's what very well. Kind of dumb. This is a completely inaccurate and ridiculous way to play chess. Go to chess.com if you want to play right.
Also, what do you do once you've captured all of your opponent's pieces???