Queenside castling

Could you give an example where White castles Q, but does not play Kb1?
As far as I know, in Open Sicilians, Kb1 after castling Q is to prevent from being pinned on the c-file.

Originally posted by badivan1
Could you give an example where White castles Q, but does not play Kb1?
As far as I know, in Open Sicilians, Kb1 after castling Q is to prevent from being pinned on the c-file.

Here is a game where I castled queen-side and lost faster than any other game I have before. oh well. a lesson bought and paid for.

Game 3738635

I like it when it brings the rook immediately into play. Had one game where I traded queens then castled for check. Probably didn't make a huge difference in the game, but it felt slightly satisfying to make.