Game guide · ZJJ-HC
Tower of Hanoi: instructions and practice
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. 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.
Build familiarity through play
Read the position before choosing your next action. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc. Try the rule on the board, then read the next instruction.
The purpose of your moves
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.
Work through the instructions
- 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 interact with the game
The example and rules describe the same game you can play above. 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.
Put the rules into context
The example and rules describe the same game you can play above. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves.
Pay attention to this rule
The board gives you the information needed for the next action. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Try the rule on the board, then read the next instruction.
Read these answers for extra help
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.
How do the controls work?
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. Use the labelled controls for your next action.
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 controls work with mouse or touch.
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 worked example offers another way to follow the rule.
On this page, 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. The controls work with mouse or touch.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Use the labelled controls for your next action.
On this page, 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.
During a round, can I move several discs together?
No. One top disc moves at a time. Use the labelled controls for your next action.
What does Undo do?
It restores the immediately previous puzzle state and move count. The game is played locally in your browser.
During a round, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. You can start a new round from the game controls.
