Game guide · 10000ZW
Getting started with 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. Start a new round when you are ready to try again. 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.
A focus for your next 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.
The objective of a 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. Try the rule on the board, then read the next instruction.
Making your moves
- 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
A careful first move helps you understand the round. 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.
See the idea in action
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.
Pay attention to this rule
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. Try the rule on the board, then read the next instruction.
A few questions answered
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.
During a round, 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.
During a round, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. Keep the current game state in view while applying this rule.
For this game, which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. The game is played locally in your browser.
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. Keep the current game state in view while applying this rule.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. No download or player account is required.
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. Keep the current game state in view while applying this rule.
On this page, 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.
During a round, what does Undo do?
It restores the immediately previous puzzle state and move count. You can start a new round from the game controls.
Can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. A new round resets the current game.