The castle and the idea I really like. It is very stable and you can set any number of combinations. The manual is actually, when you realize that: - Is at the top right of the manual the first opening code (apparently individually per lock) - This consists of 4 digits. With me were only 3 visible, because the instructions are taped. Exactly on the code. For me it was Left Left Up Up, if necessary, the attempt if it is not to read with you.