Game guide · SNAZN
Getting started with Tower of Hanoi
Take a moment to check the current turn. 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. 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.
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.
The challenge in front of you
Take a moment to check the current turn. 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.
How to proceed
- 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
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. 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. Try the rule on the board, then read the next instruction.
Keep this in mind
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.
Game-specific help
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. Keep the current game state in view while applying this rule.
On this page, how do the controls work?
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. The instructions above use these same rules.
On this page, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. The game is played locally in your browser.
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. 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 game is played locally in your browser.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The controls work with mouse or touch.
For this game, 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.
For this game, can I move several discs together?
No. One top disc moves at a time. Scores here do not represent cash or prizes.
For this game, what does Undo do?
It restores the immediately previous puzzle state and move count. The worked example offers another way to follow the rule.
On this page, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. No download or player account is required.