Game guide · GDFCWJ
Your guide to Tower of Hanoi
A careful first move helps you understand the round. 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.
Try a more deliberate 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. The game area remains available above the explanation.
Your goal
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. Start a new round when you are ready to try again.
The order of 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.
Keyboard and screen controls
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. Start a new round when you are ready to try again.
Put the rules into context
Take a moment to check the current turn. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. The game area remains available above the explanation.
An important reminder
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. The game area remains available above the explanation.
Game-specific help
During a round, 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. Keep the current game state in view while applying this rule.
When I start, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. No download or player account is required.
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.
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 instructions above use these same rules.
For this game, how many people can play here?
Solo. This is local browser play, not internet matchmaking. You can start a new round from the game controls.
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. Keep the current game state in view while applying this rule.
Can I move several discs together?
No. One top disc moves at a time. Scores here do not represent cash or prizes.
What does Undo do?
It restores the immediately previous puzzle state and move count. The controls work with mouse or touch.
During a round, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The instructions above use these same rules.