Tap the black item on the upper left side of the screen. Equip it to be able to pull the circle on the right.Count all the colors in the flag for every pulled circle and add, minus, or multiply it to get the answer.
- First circle: 5
- Second circle: 6
- Third circle: 2
- Fourth circle: 6
Tap the keypad on the left and key in: 5626.
Elevator opens. Welcome to level 50.
