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Wedge - Nine Lines or Fewer
Path: WedgeVariants · Prev: Wariuchi · Next: WedgeWhenTheApproachIsPossible
Keywords: Opening, MiddleGame
Standard Nine Space Wedge
This is a standard type of position in which White would play the marked stone as a wedge.
Whichever side Black plays, White will be able to form a base, with a two-point extension. This works because White played in the centre of an open area nine lines wide. Seven Space Example
Assuming only a narrower space of seven lines, playing in the centre affords only a small base. This isn't necessarily bad, because Black's enclosures still have weaknesses (aji).
Another way of playing is for White to try to make the most possible use of the possibilities at the two ends. After 1 and 3, White plays 5 in order to tie up the stones played into a group.
The game might continue like this. How does this compare with the other result from the starting position? White is much closer to having settled a group in this area. On the other hand White has lost some possibilities against the corners. There remains a weak point at a, but in general Black has gained security in each of the corners.
Eight Space Example
This position was first published in the British Go Journal (BGJ 115, Summer 1999). The space on the right side is eight lines wide.
This method of play by White corresponds to the pattern discussed above - see what you can get using 'both ends'. Black 2 is best.
This continuation, with White 1 played to leave aji on the top side, represents success for White: a tight fit into the right side. Michael Redmond plays into seven lines
Michael Redmond-He Xiaoren 1996-06-20, from the 1996 NAMT - the North American Masters. Black starts the middlegame before playing out a joseki in the lower right.
Black's idea is to make the most of the marked group, which is solid but low. Black 9 allows White a, which is a good direction of play in these circumstances. Later in the fighting Black had sente to play Black b, White c, Black d and stabilise the group on the left side. Path: WedgeVariants · Prev: Wariuchi · Next: WedgeWhenTheApproachIsPossible This is a copy of the living page "Wedge - Nine Lines or Fewer" at Sensei's Library. ![]() |