Twist Five and Twist Four: the board moves回しの考え方

A line across a quadrant edge is not a line

Every turn ends with a quadrant rotating. A line that crosses from one quadrant into another can be broken by turning either. A line that lives inside one quadrant survives every turn of the other three, and turning its own quadrant only moves it.

So the strong shapes are the ones inside a quadrant, especially the centre cell of a 3×3 quadrant, which does not move at all when the quadrant turns. On the 6×6 board those four centre points are the anchors of every plan.

Use the turn on your own move

• You place, then turn. Placing a stone that will line up after the turn is the basic tactic: the stone goes down where the line will be, not where it is.
• Turning to break the opponent's line is defence; turning to complete your own is attack. The best turns do both.
• Five for both at once is a draw. When you are losing, look for a turn that makes their five and yours together.