Game guide · XBZJZX
Tower of Hanoi: from controls to your first round
Begin with the basic rule, then follow the result of your action. Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one. The game area remains available above the explanation. Choose three to eight discs. All discs begin on the left tower. Try the rule on the board, then read the next instruction.
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts.
Bring this focus to a round
The example and rules describe the same game you can play above. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc. Start a new round when you are ready to try again.
What the game asks you to do
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. Keep the goal in mind before your next move.
The playing sequence
- 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
Read the position before choosing your next action. Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. Keep the goal in mind before your next move.
Try this example
Check the rule below as you play. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves.
Keep this in mind
Take a moment to check the current turn. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Keep the goal in mind before your next move.
If you are unsure
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. Use the labelled controls for your next action.
For this game, 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.
For this game, 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.
Which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Use the labelled controls for your next action.
During a round, 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. No download or player account is required.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The worked example offers another way to follow the rule.
When I start, 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 game is played locally in your browser.
Can I move several discs together?
No. One top disc moves at a time. The controls work with mouse or touch.
During a round, what does Undo do?
It restores the immediately previous puzzle state and move count. Use the labelled controls for your next action.
For this game, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The controls work with mouse or touch.
