Be a black belt, duel him, and it just happens.
yes but you have to be smart WHAT IT SAYS UP THERE IS WRONG. YOU CANNOT. of course you beat, sensi means he was senior but if ur training is just like sensi so you can beat sensi but first of all you must be strong to fight with sensi.
Yes there is a way to beat the Sensi on Club Penguin.
after you defeat o-dor you can go anywhere go to the moon base then talk to sensi than you will be the sensi and the sensi will be i-ninga then you have to fight.
you talk to sensi and if you beat him at card jitzu you will become a ninja you talk to sensi and if you beat him at card jitzu you will become a ninja
you have to make him angery with the cards
The sensi always picks his card after you because he looks at your card and then he picks one to beat it
you have to beat sensi by getting black belt
to beat the sensi you need to earn your black belt then challenge him
play sensi a few times you will lose then after about 5-10 goes he will mess up and you will be able to beat sensi and become ninja
if you wont to beat sensi on club penguin you have to have a black belt.if you are a black belt then you have to play with sensi.i know its very hard but if you keep playing and playing the sensi gets confused and starts to lose.there is an another way which is by buying a code.if you have a code you can win sensi very easily but it even ok without a code just keep playign with sensi and you shall win!!!goodm luck!
You have 2 b a black belt and by luck, it happens.
you hafe to beat the sensi 102 times its pretty simple