You're in!
Waiting for the teacher to start a game…
Room · you are
Drag a piece to a new pile.
No more moves! Vote what to do:
A vote passes when half of the players agree. Tap again to change your mind.
How to play Tower of Hanoi
- Drag a disk from one peg to another.
- A bigger disk can never sit on a smaller one.
- Only the top disk of a peg can be moved — that's the stack rule.
- Goal: stack every disk in order on the rightmost peg.
How to play Color Sort Pipes
- There are exactly enough blocks of each color to fill one pipe.
- The FREE pipe (dashed, marked FREE) is a buffer — it must end empty. It is not counted toward the colors.
- Drag the top block of a pipe onto another pipe.
- A block may only land on an empty pipe or on top of a same-color block.
- Pipes can't overflow — the destination must have room.
- Goal: every colored pipe holds one color, FREE pipe ends empty.
What is a stack?
A stack is a list with two moves: push to the top, pop from the top. Last in, first out.