Game guide · 2COPE
Play Tower of Hanoi with the rules at hand
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. 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
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. Try the rule on the board, then read the next instruction.
The objective of a round
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. Start a new round when you are ready to try again.
A walkthrough of the rules
- 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.
Input guidance
Take a moment to check the current turn. 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.
One detail worth checking
Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected. The game area remains available above the explanation.
Common questions
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. Scores here do not represent cash or prizes.
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.
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.
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. You can start a new round from the game controls.
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. Use the labelled controls for your next action.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. No download or player account is required.
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. The worked example offers another way to follow the rule.
When I start, can I move several discs together?
No. One top disc moves at a time. Keep the current game state in view while applying this rule.
During a round, what does Undo do?
It restores the immediately previous puzzle state and move count. Scores here do not represent cash or prizes.
On this page, can I use the middle tower?
Yes. It is a temporary holding tower needed to move the stack legally. The controls work with mouse or touch.