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World 19-12 is the twelfth and final level of World 19 of Super Mario Challenge from Super Mario Maker for Nintendo 3DS as well as the final level of said mode. This level is exclusive to the Coursebot.
The level is set up in a way that it is both possible to get to the end just by using Wall Jumps and jumping on Red Koopa Troopas, as well as places to rest if the player isn't that skilled. After jumping off of the start area, the player needs to go to the first three Red Koopa Troopas before Wall Jumping between four walls without pits. After hitting the highest wall or from the nearest ground, the player then needs to cross a big pit by using four sets of three Red Koopa Paratroopas. Next, the player needs to get to Wall Jump between three walls with no ground between the second and third. Between this and the next Wall Jump section are three groups of two Red Koopa Troopas. The next Wall Jump section contains five groups of ground and six walls with very little ground below. After jumping off of the fifth group, the player needs to bounce on two groups of two Koopa Paratroopas before going to either some ground or a Big Koopa Troopa. After Wall Jumping to the top, the player receives a Checkpoint Flag. If the player starts at the Checkpoint Flag, they are forced to touch ground.
After going down, the player can either land of some ground or two Red Koopa Troopas. Wall Jumping between two walls leads to another two Red Koopa Troopas with some leniency if they over shot. Doing another Wall Jump between two walls leads to another two Red Koopa Troopas, but this time without ground for overshoots, but ground for safety. After Wall Jumping up two more walls, the player then needs across of pit by using three grounds sets with one Red Koopa Troopa for the first and two Red Koopa Troopas for the other. Then, the player needs to Wall Jump up between three tall walls with safety ground near the walls. After getting through this tall Wall Jumping section, the player then needs to use a Big Koopa Troopa and the Cannons or Cannonballs to reach the Goal Pole.