In the rule “The Safe”, if it exists, replace “The Safe has a Combination lock with 3 numbers between 1 and 1000 known only to the Executor.” with:-

The Safe has a nine-digit Combination lock determined by the Executor.

...and remove “in the right order”.

In the rule “Combination Lock”, if it exists, replace “either a hint for any of the numbers in the Combination or a hint for the order of the Combination.” with:-

of either a chain of three consecutive numbers from the Combination, or a single number of the Combination and its position. (This is determined at random.)

Upon enactment of this proposal, the Combination shall change to a nine-digit number previously determined by the Executor.