Game guide · JZJSBYY
Making your first moves in Tower of Hanoi
Check the rule below as you play. 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. Keep the goal in mind before your next move.
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts.
A focus for your next round
Check the rule below as you play. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc.
Understand the aim
Check the rule below as you play. 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.
How to use the controls
Begin with the basic rule, then follow the result of your action. Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. Try the rule on the board, then read the next instruction.
A useful example
Keep the goal in view while choosing a move. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. Try the rule on the board, then read the next instruction.
A useful caution
Check the rule below as you play. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected.
Answers about the rules and controls
On this page, 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. The controls work with mouse or touch.
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. A new round resets the current game.
On this page, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. Scores here do not represent cash or prizes.
During a round, which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Keep the current game state in view while applying this rule.
For this game, 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 instructions above use these same rules.
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.
Can I move several discs together?
No. One top disc moves at a time. Keep the current game state in view while applying this rule.
On this page, what does Undo do?
It restores the immediately previous puzzle state and move count. You can start a new round from the game controls.
When I start, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. Keep the current game state in view while applying this rule.