“The combination is written down nowhere. It is in the way the strip folds: six stamps, and whoever knows how to fold it reads it off the pile, top to bottom.”
Click a fold mark and choose which way the paper falls. There is only one way of leaving the stamps in that order.
from the top of the pile down
Six stamps joined together, never torn apart, and a strongbox that asks for six digits. The old man never wrote the combination down: he kept it in the way the strip folds, because folding a piece of paper leaves the parts in an order that is not the one they were in.
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