definitive guide to winning "Khul Ja Sim Sim"

Remember the famous indian TV gameshow "Khul Ja Sim Sim" ( commonly remembered as "Tai Tai Fish" ) where a participant was asked to make a choice between three doors, two of them having fishes in them and one having a jackpot.
This gameshow was a copy of american gameshow "Lets make a deal". Seems like both of these gameshows are based on a paradox. Mastering the solution to this paradox can lead to a highly profitable probability of winning.
Monty Hall_problem

I am not responsible for any losses to the gameshow producers ;)

cheers
tintin