With a 3 digit code the numbers required will be 000 to 999,....ie 1000 different combinations.
Therefore just lock one catch and sit there trying these 1000 combinations methodically starting at 000 , 001 etc until you obtain the correct one.
I`ve done it more than once in the past...and it would take even longer with a FOUR digit code ...ie 10,000 combinations...but I`ve been successful with one of those as well....PATIENCE is the answer....ps..quite often these simple codes can be 000 or three more same digits...Good luck...and keep trying until you find it!
James
July 2008