The minigame has 3 rewards: piece of heart (first win), treasure chart (second win), and a second treasure chart (win within 20 moves). The theoretical minimum

The minigame has 3 rewards: piece of heart (first win), treasure chart (second win), and a second treasure chart (win within 20 moves). The theoretical minimum number of times you need to play the minigame is 2 (if you win within 20 moves the first time) but the 3-round setup is consistent