Game guide · SXLANJU
Follow the steps for Tower of Hanoi
Read the position before choosing your next action. Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. Choose three to eight discs. All discs begin on the left tower.
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts.
Give this approach a try
Keep the goal in view while choosing a move. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc.
The goal to keep in mind
Use the controls beside the game rather than guessing the rules. Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one.
The steps to play
- Choose three to eight discs. All discs begin on the left tower.
- Select the source tower, then the destination tower. Only the top disc moves.
- An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc.
- Use Undo to reverse a move. Complete the puzzle when the right tower holds the whole stack.
Your inputs
Keep the goal in view while choosing a move. Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. The game area remains available above the explanation.
See how the rules apply
Begin with the basic rule, then follow the result of your action. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. The game area remains available above the explanation.
Check this before moving on
The example and rules describe the same game you can play above. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Start a new round when you are ready to try again.
If you are unsure
For this game, what is the aim of Tower of Hanoi?
Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. Keep the current game state in view while applying this rule.
When I start, how do the controls work?
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. The controls work with mouse or touch.
During a round, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. The instructions above use these same rules.
When I start, which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. The controls work with mouse or touch.
When I start, what rules and limits are used here?
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts. Scores here do not represent cash or prizes.
During a round, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Use the labelled controls for your next action.
During a round, what is the minimum number of moves?
For n discs the minimum is 2^n − 1. The board shows the minimum for your selected disc count. The instructions above use these same rules.
During a round, can I move several discs together?
No. One top disc moves at a time. Scores here do not represent cash or prizes.
When I start, what does Undo do?
It restores the immediately previous puzzle state and move count. Scores here do not represent cash or prizes.
On this page, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The worked example offers another way to follow the rule.
