Chain Reaction Grid

Match

Mode

Red bot

Blue bot

Fast chain

Red hint

Board

Bot skill

Smart bot searches replies before it moves.

Rules

Place an orb in an empty cell or your own cell.
Capacity equals orthogonal neighbors: corner 2, edge 3, center 4.
At capacity, a cell explodes into its up/down/left/right neighbors.
Explosions claim neighboring cells and can trigger more explosions.
After both players enter the board, losing all orbs eliminates you.