Go to duel mode and select any(i.e.morning,noon,night) desert area . while fighting dragon dash towards a low leveled rock which are non-desructive. they will not break . this everybody knew . but sometimes it happens that you reach underground and the enemy is overground . you can't see him but you can see yourself in a trapped area . niether he can attack you nor you can attack him with puch or kicks . but when he shoots towards you the attack will get blocked by the outer wall of the rock . and when you shoot the attack will be blocked by inner wall of the rock. but somehow there are certain points like thing from where your shooting attack will work. to get outta here you need a rush type blast 2 and you will reach out and attack the enemy. WARNING opposite can also happen . your enemy can also get inside the rock and attack you but you will not be able to attack him . but you both can also get inside . but in this the fight will continue like normal . in this case also if either of you attacks with a rush type blast 2 you and him will get out . BUT THIS HAPPENS ONLY SOMETIMES THAT YOU GET INSIDE . SO DON'T SPECIALLY TRY TO GET IN JUST WHEN YOU ARE PLAYING A DUEL ALWAYS SELECT DESERT AREA . SO SOMEDAY YOU MAY GET IN . IT HAS HAPPENED MANY TIMES WITHME . it can happen in story,tournament or any other mode.