Tewari Example 5

Kobayashi Satoru (W) - Imamura Toshiya, 2006  

From this Asahi newspaper site. Black played - , allowing White to play the big point at .

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

Tewari  

In this position the exchange, - , 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 , 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 first, then make sabaki in the corner

Leela Zero's preference (ctd)  

And then it unfolds like this.