Game guide · YXZZZ
The Tower of Hanoi playbook
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. Choose three to eight discs. All discs begin on the left tower. Try the rule on the board, then read the next instruction.
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
An empty tower accepts any disc; an occupied tower accepts only a smaller disc than its top disc. Start a new round when you are ready to try again.
The challenge in front of you
Take a moment to check the current turn. Move the complete stack of discs from the left tower to the right tower without placing a larger disc on a smaller one.
Work through the instructions
- 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.
An example before you play
The board gives you the information needed for the next action. Three discs can be transferred in seven legal moves. Four discs need at least fifteen moves.
Pay attention to this rule
Check the rule below as you play. Only the top disc can leave a tower. Moving a large disc onto a small disc is rejected.
More answers before you play
When I start, 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.
During a round, 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.
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.
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. A new round resets the current game.
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 instructions above use these same rules.
How many people can play here?
Solo. This is local browser play, not internet matchmaking. A new round resets the current game.
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. Keep the current game state in view while applying this rule.
For this game, can I move several discs together?
No. One top disc moves at a time. The instructions above use these same rules.
For this game, what does Undo do?
It restores the immediately previous puzzle state and move count. No download or player account is required.
During a round, 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.