Two stars side - pattern 1
Difficulty: Expert
Keywords: Opening
![[Diagram]](../../diagrams/34/23742c7a869239e9c54e254c851eb3ca.png) | Uncommon pattern |
Although occupies an obvious big point, this formation isn't very common in pro games.
![[Diagram]](../../diagrams/24/427230b2a8dfdb4e2559df503d0f6f11.png) | Black develops |
The popular move next for Black is . In answer White usually takes steps to limit Black's framework, for example at the marked points. Even though isn't a rapidly developing play, it is quite urgent for White to pay attention to this area.
![[Diagram]](../../diagrams/10/565da6cc8c91756273b97fb751e4a902.png) | Black develops towards the centre |
The choice of has been seen in recent years: it indicates that the original third line play was made in connection with the lower left corner, and that the left side is still important. The circle-marked point is now one vital point for both sides. White may also choose the square-marked point.
In these examples Black avoids trying for a double-wing formation based on 4-4:
![[Diagram]](../../diagrams/24/1120aba7b360ab07cd58b290c5a2d35a.png) | Invitation to invasion |
It is considered that playing and invites , an ideal 3-3 invasion.
![[Diagram]](../../diagrams/6/4e54f8c4e32a0c5bc4e0cfb6a8d20645.png) | Widest path |
Assuming White to play, this is the widest path sequence: effectively this is a joseki. That does assume that is a strong stone.
![[Diagram]](../../diagrams/36/edaf800bfa29405e3084c3a448450071.png) | Approaching from the other side |
This choice of is only appropriate when can become weak. That is, exactly when the exchange Black a- White b will cause Black trouble. Otherwise White would get a heavy group here, without much compensation.
See Two stars side - pattern 2 for the case in which is on the fourth line.
Charles Matthews
This is a copy of the living page
"Two stars side - pattern 1" at
Sensei's Library.
2003 the Authors, published under the OpenContent License V1.0.
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