Game guide · MSFRIES
Getting started with 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. Start a new round when you are ready to try again. 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.
Practice with a purpose
An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc. Keep the goal in mind before your next move.
The objective of a round
Keep the goal in view while choosing a move. 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.
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.
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.
An example to follow
Use the controls beside the game rather than guessing the rules. 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 mistake to avoid
Take a moment to check the current turn. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. Keep the goal in mind before your next move.
Helpful answers for players
When I start, 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. A new round resets the current game.
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. No download or player account is required.
During a round, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. The instructions above use these same rules.
On this page, 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.
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. The controls work with mouse or touch.
During a round, 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. A new round resets the current game.
On this page, can I move several discs together?
No. One top disc moves at a time. The controls work with mouse or touch.
When I start, what does Undo do?
It restores the immediately previous puzzle state and move count. Use the labelled controls for your next action.
For this game, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The worked example offers another way to follow the rule.
