What would have you guys done instead?, I'd probably took that pawn in E4 out with that rook...
Yes. It would have cost you a nice pressure pawn, but you can then gain a pawn by moving the rook to b4. Then if you play it right, that should be enough of an advantage to win the game.
Other 'special' moves and stuff in chess that I can think of right now:
- reaching the other side with your pawn, obviously (where you can trade it for any other piece except a pawn or a king, with most people choosing a Queen obviously)
- draw through repetition, when the same two moves are repeated for three turns
- draw through the 50 turns no strike move (if that still exists), meaning that if no pieces are taken for 50 moves, then you have a draw (very rare this one)
- draw through stalemate ... if one of the two players cannot make a move during his turn (a king is not allowed to make a move that puts him in check), then no matter if that player even only owns a king, it's still stalemate and thefore a draw. Something to look out for, as it sucks when you're that close to winning and then you accidentally draw.
That's about all I can think of though ...
(By the way, should anyone fancy a match, I'm under the same name on itsyourturn.com)