The Thwomp will ask Mario and Goombella questions in Shhwonk Fortress. If Mario gets a trio of wrong questions, he needs to fight a quartet of Clefts. Mario's stuck with the Clefts and if he doesn't have the Power Smash or POW Block, he has to die, the game must be restarted, or he can pull out a victory regardless via consistent superguards. A POW Block can crush these creatures with a hit. The Thwomp will complain that Mario crushed his Clefts. He can now enter underground.