Now that this book has been out for a while, would anyone care to comment on the change in content from the old version to the new? I do not have the book yet and haven't seen a copy of the English version. Today I was looking through a copy of the Japanese version after lunch at a local book store. I had a few tests that I wanted to run (i.e. a few biased expectations). Basically the Takao version failed on all counts. So I am wondering what others think that have been reading/studying in the meantime.
Things I checked:
First was the attachment below. As far as I can see from GoGoD, this has always been more popular in Korea and China than in Japan. Also it was in its infancy when Ishida came out, so I thought it was a good test of how serious the new editors were about including new material. In Ishida the joseki is mentioned under the high extension at "a" rather than the low. Meanwhile most of the actual practice has been under the low as in the diagram. However, as far as I could see the book analysis remained under the high extension. Since the lines of play are someone different, this seems unfortunate. This is especially true since the connection at "b", which has become the main line since 2007 if I look at GoGoD, is very rare with the high extension and does not seem to be mentioned at all in Takao. Can anyone confirm or refute that?
$$B First Case
$$ ------------------------
$$ . . . . . . . . . . . . |
$$ . . . . . . . . O . . . |
$$ . . . . 3 1 O . . . . . |
$$ . . , . . 2 b . X . . . |
$$ . . . . . . . . . . . . |
$$ . . . . . . . . a X . . |
$$ . . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$B First Case
$$ ------------------------
$$ . . . . . . . . . . . . |
$$ . . . . . . . . O . . . |
$$ . . . . 3 1 O . . . . . |
$$ . . , . . 2 b . X . . . |
$$ . . . . . . . . . . . . |
$$ . . . . . . . . a X . . |
$$ . . . . . . . . . . . . |[/go]
Second was the attachment below. Since the late 1990's this has become the main line in the position shown. This does not fit well with the format of corner joseki diagrams, so I wondered how it would be handled. Now at the time that Ishida came out, the diagonal connection followed by extending down the side (third diagram below) was clearly the main line. This was given a lot of coverage in Ishida. It seems to me that same coverage is just continued essentially unchanged in Takao with no mention (that I could find) of what is now the main line. Again can anyone confirm or deny?
$$W Second case
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . . . . |
$$ , . . . . . , X 1 . |
$$ . . . . . . . . . . |
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$$ . . . . . . . . . . |
$$ , . . . . . , . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------
- Click Here To Show Diagram Code
[go]$$W Second case
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . . . . |
$$ , . . . . . , X 1 . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ , . . . . . , . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------[/go]
$$B Final Joseki Position
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . X . . |
$$ , . . . . . , X O . |
$$ . . . . . . X O X . |
$$ . . . . . . . O X . |
$$ . . . . . . . O X . |
$$ . . . . . . . O . . |
$$ . . . . . . . . . . |
$$ , . . . . . , O . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . O O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . X . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------
- Click Here To Show Diagram Code
[go]$$B Final Joseki Position
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . X . . |
$$ , . . . . . , X O . |
$$ . . . . . . X O X . |
$$ . . . . . . . O X . |
$$ . . . . . . . O X . |
$$ . . . . . . . O . . |
$$ . . . . . . . . . . |
$$ , . . . . . , O . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . O O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . X . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------[/go]
$$W Former Main Line
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . . . . |
$$ , . . . . . , X . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 4 . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 3 . . |
$$ , . . . . . , . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 1 . . . |
$$ . . . . . . . O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . 2 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------
- Click Here To Show Diagram Code
[go]$$W Former Main Line
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . X . . . . |
$$ , . . . . . , X . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 4 . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 3 . . |
$$ , . . . . . , . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 1 . . . |
$$ . . . . . . . O . . |
$$ . . . . . . O X . . |
$$ , . . . . . , X . . |
$$ . . . . 2 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------[/go]
Third was the diagonal reply to the two-space high pincer below. At the time Ishida came out, this was the most popular response to that pincer. In the meantime, it has almost disappeared. My understanding is that this was mainly due to the foot sweep at

. Yet as far as I could see, Takao keeps the old analysis without discussing the decline of the joseki. It even asserts that "a" is the normal response. This is no longer true in the 6.5 point komi era if I look at GoGoD. I might easily have missed some commentary on this in the text since I was flipping through while standing at the book case. Any comments?
$$B Third Case
$$ ----------------------
$$ . . . . . . . . . . . |
$$ . . . . . . . 3 . . . |
$$ . . . . . . O . . . . |
$$ . , . 1 . 2 . , X . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . a . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . , . . . . . , . . . |
$$ . . . . . . . . . . . |
- Click Here To Show Diagram Code
[go]$$B Third Case
$$ ----------------------
$$ . . . . . . . . . . . |
$$ . . . . . . . 3 . . . |
$$ . . . . . . O . . . . |
$$ . , . 1 . 2 . , X . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . a . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . , . . . . . , . . . |
$$ . . . . . . . . . . . |[/go]
I loved Ishida when it came out, just as I started playing Go. It has remained the most often (re)used Go book that I own. I am a little hesitant to buy Takao due to the impression that there isn't really as much updating as there should be in order to properly reflect the current state of play. What is the thinking now that people have had their hands on it for a while?