Is it disabled by distinguish whether it is a ban? It is not a "three or three" "four four", but it should be like this: 1. As long as the black is next, it is "even five", then don't consider What is banned. 2. If "even five" is not formed, it has formed "Chang Xiang", it is definitely a banner. 3, in the case where the top two are not established, if the black has formed a situation, the white party has no failure to defend the defenders, and if this situation is "four three", it is not a banner, otherwise It is a banner. 4. Any situation that is not established in the top three is not a ban. In other words, black chess can only win in "four three" (huh, let go of the other side of the eyes, if the way to win is not "four three", it is a banner. If a situation does not make black chess, whether "three or three" is good, "four four" is also good, no ban. As several examples, look like a banner, is actually not.
Figure 1, a point is not "three or three" ban, because the landscape "Chang Xiang" caused black chess to win. ┼┼┼┼┼┼┼┼ ┼ ● A ● ┼ ●● ┼ ┼┼ ● ┼┼┼┼┼ ┼┼ ● ┼┼┼┼┼ Figure 2, A point is not "three three" forbidden, because the horizontal is fake Live three. ● ● ┼┼┼┼ ○ ┼ ● A ● ┼ ○ ┼ ┼┼┼ ● ┼┼┼┼ Figure 3, A point is not "three or three" forbidden, because if the black is walking A, at the point above A A little bit of four or four ban hands can't go, the longitudinal black chess is not live three. ┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼ ┼┼┼┼┼┼┼ ○ ┼┼┼┼┼┼┼┼ ┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼ ┼┼ ┼┼┼┼ ●● ┼┼┼┼┼┼┼┼ ┼┼┼┼┼┼ ●● ○ ┼ ● ┼┼┼┼┼ ● ● ┼ ●● ○ ┼┼┼┼┼┼ ┼┼┼┼ ○○ a ○○ ┼┼┼┼┼┼┼ ┼┼┼┼┼┼┼ ● ┼┼┼┼┼┼┼┼ ┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼ ┼┼┼┼┼┼ Bamboo
