StackIt

New game

Who is playing?

Choose your opponent

Who moves first?

Board size

Thinking time

Seconds per computer move. More time, stronger play.

Player 1 thinking

vs

Player 2 thinking

🎉

AlphaBeta

—

thinking…

What it expects to happen

The moves it thinks both sides will play. Point at one to see the cell.

Moves it considered

What the network sees right now

Chance to win —

Show it on the board

How deep it looked

Each row is one round of searching, one move deeper than the last.

How to play

Click any empty cell, or one of your own, to drop blocks on it.
An empty cell starts at 3. One of your own cells goes up by 1.
When a cell reaches 5 it topples: it loses 4 blocks and pushes one block into each neighbour.
Every cell it topples into becomes yours. Toppling can set off a chain reaction.
Own every cell on the board and you win.