[NES] Super Mario Bros 3 - W2 - Desert challenge 2

Fought a mini boss before proceed to the desert challenge number 2. In this stage, the single eyed turtle can fly and attack Mario. With limited jumping space and required Mario to use the turtle shell to break a path in order to advance further, it's actually pretty tough. Found a secret tunnel to many coins, but accidentally locked myself from transforming bricks into coins. Will have to look into that again.