Heh, I did something similar in a correspondance game with my opponents queen. In fact, it was worse. I missed it, saw it when it wasn't my turn, when it was my turn again I had forgotten and missed it again. lol Finally caught it the next turn.
by the way Black won!
what!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
what?
nothing