![]() |
![]() |
![]() |
![]() |
Deep invasion |
||||
The term invasion can, depending on the context, mean many different things. So here the term In a handicap game, White must rapidly establish a presence in a significant portion of the board, lest his opponent effectively fence off over half the potential territory. Many players rely on their weaker opponent to be relatively inaccurate at framework connectivity but against an adherent of GCS this would be a mistake! White too must follow GCS. Crude attempts to sever notional framework links will not do because, should Black play correctly, the intervening White stones can be punished. But it is legitimate to invade either in order to settle a group, or create aji for latter stages of the game. Without overplaying, White should also give Black the maximum opportunity to go wrong! In particular White should constantly be on the look out for when it becomes legitimate to establish framework barriers. Early direct invasion at the 3.3 point is not to be recommended because Black can easily confine White to the corner whilst strengthening his framework links. Invading the sides is the standard technique. This often gives the option of invading the corners later on when White has built up some strength. In even games, it is advisable either to avoid deep invasion altogether or alternatively invade very late - when all the framework is utterly stable. In such circumstance a truly deep invasion cannot effect the rest of the board. If a speculative invasion should fail to establish a live group the player can retain the initiative and, given that the opponent has responded to each stone played in the area, the score remains unchanged. It is only ever necessary to invade when the estimate of the territory is significantly in your opponent's favour but accurately estimating the score requires some skill. If adhering to GCS, in a game with less than four handicap stones, the ninth directive will determine when to consider invasion. This will be in a safe context and, instead of having to accurately estimate the overall score, it will only be necessary to compare the size of the invasion with the size of the alternative boundary expanding moves. |
||||
![]() |
![]() |
![]() |
![]() |