Cho U opening

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In 2015 Cho U has played the following unusual opening as Black for a number of months.

[Diagram]

Cho U opening

Michael Redmond has called this the Cho U Opening and talks about it in his video: [ext] https://www.youtube.com/watch?v=pb94x5bLeKg

bugcat: This is just an early development of the Black Hole opening, isn't it? According to the strange openings page, this version of the Black Hole calls for "forming a square using four 5-7 points" and is described in a Haylee video. I remember having learnt that this opening had been played repeatedly by Cho U. Are there instances of Cho not continuing to play the other two 7-5s?


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