Task 1 (black). The craft point, 做棋点: one stone that loads TWO weapons. Your diagonal (4,4)-(6,6) is capped at (3,3); your column pair stands at (7,5)-(7,6). One square turns the diagonal into a four and the column into a live three together — a 4-3, and NOT a foul: the renju judge counts one four and one three. Craft carefully.
Solve the remaining tasks to finish this lesson.