Well first you need a friend to help you and kill the monsters for you. After you've done that get about 30 Wizard Mind Bombs and 30 Lobsters. Give 15 Mind Bombs to your cb friend, keep 15 Mind Bombs in your inventory and fill the rest up with food. Now, when killing the monsters MAKE SURE you drink a Wizard Mind Bomb, this decreases your Attack, Defense, and Strength level to 0. Having these at zero guarantees you will hit a zero on the monster. After you attack a monster with decreased stats, get your combat friend to kill it. You will gain 0 combat xp because you hit a zero on it. Keep an eye on your stats and make sure you don't attack anything with your stats back to normal Good luck if you're going to attempt this. If you have anymore questions just ask :)