Make your game a little easier

Change your last move

When the computer makes a winning move because of your last move or when you accidentally make the wrong move, you can undo your last move and change it. To undo your last move, press the button in the header bar which either shows an arrow and the color to play or says End!, and select Undo last move, or press CtrlZ. You can now drop your marble at a different row in the game area to change your move.

You can undo all your moves starting from your current move until you reach a favourable state of the game, or until the beginning of your current game, by pressing CtrlZ repeatedly.

Use hints

If you are not sure of your next move, you can use a hint. When you use a hint, your marble moves to the top of the column that is the best choice, strategy-wise, and blinks. You can then drop your marble into that column. To use a hint, press the button in the header bar which either shows an arrow and the color to play or says End! and select Hint, or press CtrlH.

There is no limit on the number of hints you can use in a game.