checkmate?

I checkmated my oponent on this board [gid]4105346 [/gid] but it didn't register as a win and he has another move. help!

It's a game in progress I know but you may want to check out the FAQ, and concentrate on the following areas:

"Please make sure you are familiar with the en passant rules before reporting a bug. "

Since your opponent has one and only one response to your last move, I don't think my reply here will count as commenting or discussing a game in progress, as what little I have said will have no effect on the next move.

Yes you're right. I forgot about en passant (I always do until someone mentions it) That's mucked my game up now but only me to blame. I feel such a idiot. Thanks for your help.