[Event "fa8_diagram4.1"]
[Site "?"]
[Date "?"]
[Round "?"]
[White "Is the post strong ?"]
[Black "?"]
[Result "*"]
[GameType "20"]
[Setup "1"]
[FEN "W:W26,33,36,37,38,42,43,44,47:B2,4,5,7,9,11,15,22,27."]
[PlyCount "23"]

1. 43-39 { White will try to isolate the enemy outpost by itself
occupy the adjacent field 28. This is an active control mode. The
idea behind this action is the removal of the outpost of the own
discs. The outpost is standing alone and can then be attacked
directly. This idea is also called the attack in the back.
At first
glance you think the black attack is reliable like this: three
attackers against three defenders. However, the danger from the other
side. } 9-13 2. 33-28 22x33 3. 39x28 { Because white has now occupied
the adjacent field 28 black outpost is cut off from the other disks.
The outpost attack three times over 37-31 white wins this disc. Think
about it! } 7-12 4. 37-31 12-18 5. 31x22 18x27 6. 42-37 2-8 7. 37-31
8-12 8. 31x22 12-18 9. 47-42 18x27 10. 42-37 4-9 11. 37-31 15-20
12. 31x22 *