Object: turn all marbles white.
(2 fixed variants, 2 randomized variants)

You are given a board with marbles which run in a maze-like groove.
You are also given four red areas and a gew buttons you can click.

Click one of the up- or down-arrow to move all marbles at once along the path given by the black groove.

Note that each red area carries three marbles.
If three such marbles have the same colors, clicking the 'X' button will turn the three marbles white.
Your goal is to turn all marbles white.

The white marbles are the 'jokers' in this game.
They can stand for any color.
Hence if you have two blue marbles and a white marble on top of a red area, you can click the associated 'X' button and the two blue marbles will turn white.

Click the '1<=>2' sign to switch the two inner marbles above the associated red area.
Click the '2<=>3' sign to switch the two outer marbles above the associated red area.

You win if you have turned all marbles white.

There are two variants wit a fixed setup and two with a random setup.
The variants with fixed setup have solutions associated with them.

Beginners: turn all marbles white.
Advanced: do so in the least number of moves.
The number of moves is shown at the top right.