Sixteen boxes to claim
Dots &
Boxes
Draw one short line, close the square, and keep the turn long enough to control the board.
Close the fourth side
Draw a line.
Keep the turn.
Choose any open horizontal or vertical line between adjacent dots. If your line completes a box, you claim it and immediately draw again. A single line may complete two boxes.
When every line is drawn, the player with more claimed boxes wins. In computer mode, the opponent completes available boxes and tries to avoid offering easy ones.