@Tronco54 I'm delighted that you like the game. The red key is (almost) useless. The duck has smashed the red castle wide open! (Of course, when enchanted, the red key is as useful as any key.)

@cheepicus genial! gracias por responder :)

I don't think it's possible to get keyless anymore

It's possible. Perhaps you are missing a tiny piece to the solution?

any comment here?