Fujitsu 2011 final game analysis

   

The game evolved from a variation of the 3-4 point low approach two-space high pincer 4-7 press, into a fighting game. Qiu Jun (White) deviated from the common patterns at move 16 (W10 in below diagram), creating what has been judged as a potential new joseki.

Until further notice, the following analysis was conducted at 2d amateur level. Update: [ext] http://gogameguru.com/commentary-park-junghwan-qiu-jun-24th-fujitsu-cup/ has An YoungGil's splendid treatment of this game and the joseki. I haven't borrowed anything from that page in here, for I think it should at least during the first months be respected for copyright, even if quoted. Some of the points below are confirmed, but there are of course many things I didn't take into account. So go there and read!

[Diagram]
Moves 7 to 16  

Earlier, W16 was played at a. See 3-4 point low approach two-space high pincer 4-7 press, variation 3.

[Diagram]
Moves 17 to 26  

W22 can be a move hard to understand. If White captures a stone at B23 instead, Black will live by intruding into the left and White's influence may not be sufficient.

[Diagram]
Moves 27 to 36  

B27 here is an important point for influence. If at W28 instead, White will exchange a for b then take this point and Black's top central stones are floating.

[Diagram]
Moves 37 to 38  

When Black defends at B37 here, White continues to develop this corner exchange into a large scale fight with W38.

Joseki evaluation:

  • Corner territory: Divided. Both have a small group, Black's being a bit larger.
  • Influence: Black has influence towards the top side, cooperating well with his top right corner stone. White likewise has influence towards the bottom right. White has more influence towards the centre.
  • Aji: White's position is somewhat thinner, with a and b as potential cuts. Black's top group however is a bit heavy.
  • Sente: White has sente now, but considering the pattern evolved in one of "his" two corners, this is only to be expected.

[Diagram]
Why not here with W22?  

Although Black is crawling along the second line, perhaps White did not get enough from a left side where he invested 2 stones.


Fujitsu 2011 final game analysis last edited by Dieter on August 31, 2011 - 23:34
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