Game guide · YCKJ360
Understand the basics of Tower of Hanoi
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. 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.
Practice beyond the first move
A careful first move helps you understand the round. 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.
Aim for this result
The example and rules describe the same game you can play above. 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.
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 your actions work
Keep the goal in view while choosing a move. 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.
Try this example
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.
Avoid this misunderstanding
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.
Questions about this game
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. You can start a new round from the game controls.
When I start, 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.
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 controls work with mouse or touch.
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. You can start a new round from the game controls.
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. A new round resets the current game.
How many people can play here?
Solo. This is local browser play, not internet matchmaking. The instructions above use these same rules.
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. A new round resets the current game.
On this page, can I move several discs together?
No. One top disc moves at a time. You can start a new round from the game controls.
For this game, what does Undo do?
It restores the immediately previous puzzle state and move count. The instructions above use these same rules.
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.