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Black 3 is an enclosure
Difficulty: Advanced
Keywords: Opening
Black 3 played to enclose the corner occupied with Black 1 is an old idea from Edo period games. In fact it seems that this was the second opening pattern, after the regulation fuseki, to be recognised as having an individual character, from around 1820 and ahead of the Shusaku fuseki. White is now presumed to play in the lower right corner. Kajiwara has criticised that, with what support from others it isn't clear. Then Black 5 in the lower left for a diagonal fuseki pattern. The advantage to Black is that Black sees White's play in both adjacent corners, before committing to a choice there. Considering White's full range of orthodox corner options, you could say that there are as many as 100 patterns up to White 4, illustrating the richness of traditional fuseki. This type of opening, with a small high enclosure by Black, was quite standard in the first three decades of the twentieth century. After the introduction of komi it was less popular, but it was much played by Hashimoto Utaro. This is a copy of the living page "Black 3 is an enclosure" at Sensei's Library. ![]() |