Tewari Example 5


From this [ext] Asahi newspaper site. Black played B1 - B3, allowing White to play the big point at W4.

Ishida Akira, commenting on the game, said that if Black had not played B1, but had taken a big point himself, for White to play at 1 would have been absolute. He appealed to the following tewari diagram.


In this position the exchange, B1 - W2, is bad for Black.

This example is also present in Ishida Yoshio's Dictionary of Basic Joseki, vol.3.

LZ does not agree with Ishida's analysis

Leela Zero's analysis  

Before B1, LZ estimates Black's chances at 40%. After this exchange they drop to 30%. Most likely this is because Black sacrifices the corner, while living there is more to LZ's liking.

Leela Zero's preference  

LZ wants to force at B1 first, then make sabaki in the corner

Leela Zero's preference (ctd)  

And then it unfolds like this.

Tewari Example 5 last edited by Dieter on December 3, 2019 - 11:02
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