Game guide · 5AICAKE
Understand the basics 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 area remains available above the explanation. 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.
A focus for your next round
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. Keep the goal in mind before your next move.
Your goal
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. Try the rule on the board, then read the next instruction.
The playing sequence
- 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.
The controls to know
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.
Work through an example
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.
Notice this detail
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. Start a new round when you are ready to try again.
Helpful answers for players
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 worked example offers another way to follow the rule.
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. Keep the current game state in view while applying this rule.
For this game, can you show an example?
Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves. No download or player account is required.
When I start, 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.
On this page, 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 game is played locally in your browser.
During a round, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Scores here do not represent cash or prizes.
When I start, 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 game is played locally in your browser.
Can I move several discs together?
No. One top disc moves at a time. No download or player account is required.
On this page, what does Undo do?
It restores the immediately previous puzzle state and move count. A new round resets the current game.
When I start, 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.