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3453 enclosure
This is a very popular enclosure, in particular with amateur players who have a territorial style.
One effect of the intense use of this enclosure is that White's various reduction and probing techniques have been thoroughly researched.
Most of these techniques are old - few can be shown to be innovations with particular dates of introduction to high-level play.
The combination of 6 and 10 may be due to Shimamura Toshihiro in a 1950 Oteai game against Takagawa. This sequence occurs in the 1971 Honinbo Tournament book, with the attribution to him (but no game reference). The idea is that White cannot now live in the corner. Black 10 is not for taking.
This follow-up sequence is still being played in pro games. From Black's point of view, White has played on the unintended top side. As ever with middlegame joseki, nearby stones have a vast effect on the judgement of the result. Further information:- Yosumiru, Big Question Mark Problem 7, NYR2002Moves21To50, Probe Popular Misconceptions. This is a copy of the living page "3453 enclosure" at Sensei's Library. (C) the Authors, published under the OpenContent License V1.0. |