1. First Black Coin
The first Black Coin lies on the highest end of a trail of Gold coins, which is also right beside a Piranha Plant. To get there you’ll have to keep jumping the walls.
2. Second Black Coin
The second Black Coin is unassumingly tucked inside a Surprise Question Block. Just like the previous coin, all you have to do is to keep jumping off walls to get to the perfect spot to hit the block.
3. Third Black Coin
The third Black Coin is also not so hard to spot since it rests on top of a column of gold coins that’s sitting against a wall. To get this coin just make a really high jump to get the coin at the top.
4. Fourth Black Coin
Just like the second Black coin, the fourth one is hiding inside a Surprise Question Block. To get this, hop on the trampoline or spring board and bounce off the walls. Once you’ve latched on the wall to the left, slide down and then jump when you think you have enough space to hit the Surprise Question block.
5. Fifth Black Coin
The last Black Coin rests right above a pair of terrible Piranha Plants, which also happen to be surrounded by Gold coins. To get the last coin, just bounce off one wall to another (while of course avoiding the Piranha Plants) until you get to the highest part and then jump right onto the platform and then jump to the left to get the last Black Coin.