Bermuda Triangle

Path: <= Handicap =>
  Difficulty: Beginner   Keywords: Shape, Tactics

The Bermuda triangle, is a shape that often appears after a mid-point invasion of a three space extension on the fourth line, in handicap games. It is a kind of shape that the player suffering the invasion has to avoid. In this way it is fundamentally different from the same type of invasion on the third line. This triangle spells danger, hence the Bermuda triangle.

Side invasion  

Black plays the contact play of B2, mistakenly intending to connect underneath.

Bermuda Triangle  

White applies basic instinct and hanes at W1. Black suddenly gets caught by fear and draws back at B2. W3 makes a beautiful full triangle. black+circle is severely weakened (blighted). Black's position is cut to pieces. The advantage of having two stones in that zone to begin with has vanished.

For better responses, see Fourth Line Invasion With One Space On Both Sides.

For discussion of a continuation, see don't provoke damaging plays on the second line.

Path: <= Handicap =>
Bermuda Triangle last edited by Dieter on March 6, 2006 - 18:26
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