Game guide · GCROWNSPA
Learn the rules 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. 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.
Bring this focus to a 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.
What the game asks you to do
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. 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.
How your actions work
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.
Learn from a sample situation
Keep the goal in view while choosing a move. 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 board gives you the information needed for the next action. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected.
Clarifying the way this game works
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. The game is played locally in your browser.
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. The controls work with mouse or touch.
On this page, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. A new round resets the current game.
Which mistake should I avoid?
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. No download or player account is required.
When I start, 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.
On this page, 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.
During a round, 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. Use the labelled controls for your next action.
During a round, can I move several discs together?
No. One top disc moves at a time. You can start a new round from the game controls.
During a round, what does Undo do?
It restores the immediately previous puzzle state and move count. Keep the current game state in view while applying this rule.
For this game, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. Use the labelled controls for your next action.
