Tilt Puzzle

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Object: Move the marbles to their targets. There are many fixed and randomized setups to choose from.
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Contributed by: Karl Scherer (April 2014)
Open content licensed under CC BY-NC-SA
Snapshots
Details
The idea for this game stems from the simulation of marbles rolling on a tilted table.
You win if you manage to place all marbles on their corresponding target positions (which are marked by a colored circle with a black dot in the middle).
You lose if you overshoot a target with any marble or if you place the wrong marble on a target.
If a marble is on its target position, it can still be shifted away again (which causes you to lose the game) by clicking the wrong arrow button!
Beginners level: place all marbles on their corresponding target position.
Expert level: place all marbles on their corresponding target position at the same time (i.e., with the last move you move all marbles simultaneously to their corresponding target position). All 13 challenges given with fixed setups are solvable on the expert level!
Controls
arrows and double arrows
Each of the single arrow buttons on a border have the same effect: clicking one of them shifts all marbles in the direction of the arrow.
Each of the six double arrow buttons on a border have the same effect: clicking one of them shifts all marbles as far in the direction of the arrow as possible; that is, until they hit an obstacle.
Positions visited or passed over also count as obstacles in this game.
"challenge"
There are many challenges with fixed or randomized setups to choose from.
If you choose a randomized setup, an empty board without marbles or targets appears.
Click the board anywhere to let the system randomly drop a certain number of marbles and targets.
"<",">" setter bar
Click to select the previous or next challenge.
"reset"
"reset" takes you back to the scrambled starting position.
If you would like to see a differently randomized setup for this challenge, select a different challenge and then select the desired challenge again (use "<", then ">").
"moves:"
Counts the moves; useful when you compete for the fastest solution with your friends.
"back"
Click to take back the last move (works even if the "YOU LOST!" sign is up).
History
This puzzle was previously published as the Zillions game "Tilt" by the same author.
Permanent Citation
"Tilt Puzzle"
http://demonstrations.wolfram.com/TiltPuzzle/
Wolfram Demonstrations Project
Published: April 23 2014