Game guide · CQXINXING
How to play 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.
One puzzle with adjustable disc count from three to eight. Disc counts are settings, not separate game entries. Undo is available; refreshing restarts.
Something to practise
Check the rule below as you play. An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc.
Your objective
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.
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
The board gives you the information needed for the next action. Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. The game area remains available above the explanation.
Follow the example
A careful first move helps you understand the round. 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 common point of confusion
Keep the goal in view while choosing a move. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected.
Questions about this game
For this game, 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.
How do the controls work?
Tap the source tower and then its destination. Tap the selected tower again to cancel the selection. Scores here do not represent cash or prizes.
Can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. Use the labelled controls for your next action.
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 controls work with mouse or touch.
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. Use the labelled controls for your next action.
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. A new round resets the current game.
Can I move several discs together?
No. One top disc moves at a time. No download or player account is required.
During a round, what does Undo do?
It restores the immediately previous puzzle state and move count. No download or player account is required.
On this page, 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.
