(Help) Can't move my rook

Hello,

I'm a noob to posting (first post), chess, and this site. Apologies if this is an inappropriate post.

I'm in the middle of my first game on this site, and I can't figure out why my rook in c4 can't make a move to most "L" areas. In particular, I can't move it to a3, a5, b6, or d6 (was really hoping to move it to capture the pawn in b6, then either take the castle or the bishop. I unfortunately seem to only be able to move it to e3 or e5.

Thanks in advance for the help and improving my game.

Your king is in check at the moment. If you want to move your "knight" you can only move it to block the check.

also , be careful when posting current games because it is against the rules to do so but I dont see why this post would be a problem

Yes, my knight, sorry for the confusion!

Thanks for the tip on posting current games, I didn't realize it's against the rules.

Thanks again for the help!

That's why I wasn't too specific :)

Good luck