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- Click Here To Show Diagram Code
[go]$$
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In Game 10 versus Miyasaka Shinji (20, 21 Feb. 1930), Go Seigen decided against the low kakari (a) for B19 because he feared that Miyasaka would not pincer (as in the game) but would shoulder hit instead (at B19). As mentioned on page 77 of
Archers of Yue, shoulder hit openings like the Tiger Lily openings were known in Chinese Go. I wondered what those were.
It turns out that 16 variations of the Tiger Lily opening are presented on pages 134-138 of
Wizardry from the Stone Chamber. Of course these are all cross 4-4 openings for Chinese Go while these moves in Game 10 of Archers deal with a 3-4 opening. I'll give one variation here in case anyone else read this and was interested. I'm transposing the Tiger Lily position and changing black to white to match Go's game. This is just one variation. The defining characteristic of the Tiger Lily opening is of course the shoulder hit to the low kakari but also the subsequent push, hane, and cut. 6 can be a sagari, extension, or jump. There are many variations.
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$$ | . . . . . . . . . . . . 5 4 . . . . .-. . . . . . . . . . . 1 X O 4 . . . . |
$$ | . . . X . . . . . . 9 . 2 3 . O . . .-. . . X . . . . . . X . O X . O . . . |
$$ | . . . . . . . . . . 8 0 6 1 . . . . .-. . . . . . . 0 7 5 O O O X . . . . . |
$$ | . . . . . . . . . . . . 7 3 . . . . .-. . . . . . . 9 8 6 . . X 3 2 . . . . |
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- Click Here To Show Diagram Code
[go]$$
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$$ | . . . . . . . . . . . . 5 4 . . . . .-. . . . . . . . . . . 1 X O 4 . . . . |
$$ | . . . X . . . . . . 9 . 2 3 . O . . .-. . . X . . . . . . X . O X . O . . . |
$$ | . . . . . . . . . . 8 0 6 1 . . . . .-. . . . . . . 0 7 5 O O O X . . . . . |
$$ | . . . . . . . . . . . . 7 3 . . . . .-. . . . . . . 9 8 6 . . X 3 2 . . . . |
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$$ | . . . . . . . . 5 4 6 X X O O . . . . |
$$ | . . . X . . . . 3 2 X . O X . O . . . |
$$ | . . . . . . . O X X O O O X . . . . . |
$$ | . . . . . . 1 X O O . 8 X X O . . . . |
$$ | . . . . . . . . . . . 9 . . . . . . . |
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[go]$$
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$$ | . . . . . . . . . . 7 . . . . . . . . |
$$ | . . . . . . . . 5 4 6 X X O O . . . . |
$$ | . . . X . . . . 3 2 X . O X . O . . . |
$$ | . . . . . . . O X X O O O X . . . . . |
$$ | . . . . . . 1 X O O . 8 X X O . . . . |
$$ | . . . . . . . . . . . 9 . . . . . . . |
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These Chinese openings all get very intense (for me) very quickly and I find them difficult to follow or understand. Of course, they were playing a slightly different game with cross-openings and stone scoring. Anyway, I an not sure how Go thought the shoulder hit + push and cut would have continued in his game. I checked with no komi KataGo but it was not helpful. My guess is that Go feared White could use the resulting fight to prevent Black from expanding on the right while also allowing White to expand on the bottom. Let me know if you have any thoughts. I have to say though, it seemed like the actual game moves allowed white to reduce Black potential on the right (blacks extension from the shimari at 39 was only 3 spaces) and White was still able to expand along the bottom using the pincer.
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- Click Here To Show Diagram Code
[go]$$
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$$ | . . X . . . . . . . . . . 5 4 . . . . |
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Maybe this is all fluff but it was fun to read Go's comment, get a tip from the game comment, and find that I had the Tiger Lily variations.
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By the way, the players thought that move 16 was slack and that pushing at a was better. A variation in the commentary is shown below -- Black would jump at the end to avoid White 'i' but that leaves White to extend along the top at 'k'. Of course, this might not have happened this way.
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- Click Here To Show Diagram Code
[go]$$
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$$ ---------------------------------------[/go]
Since I referenced AI to see how the shoulder hit mentioned above might have worked out I looked at this also, given the discussion in the other thread about players self-commentary being inconsistent with AI judgment. It turns out that the AI (KataGo with no komi) likes the "slack" move 16 by a couple percentage points. So the AI judgment disagrees with the players. But guess what? If White played as the players said that White should, then White would be in a better position (according to both KataGo and the players) compared to KataGo's suggested variation from the game move. Of course that means that Black did not play like KataGo would. But Black was human.
So what does that tell me? KataGo might have better judgment to follow for an AI player, but Miyasaka and Go have better judgment to follow for human players.
Also, AI often doesn't like to continue with local variations. Probably better judgment but not fun or helpful. Seems like Pro commentary still has a place for some.
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$$ | . . X O . . . . . , . . . . X , X . . |
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$$ | . . X 1 . . . . . . . . . . . . . . . |
$$ | . . 6 2 3 9 . . . . . . . . . . . . . |
$$ | . . . 5 4 7 . . . . . . . . . . . . . |
$$ | . . . . 8 . . . . . . . . . . . . . . |
$$ | . . . i . . . . . , . . . . . , . . . |
$$ | . . X . 0 . . . . . . . . . . . . . . |
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- Click Here To Show Diagram Code
[go]$$W
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$$ | . . X O . . . . . O . . k . . . . . . |
$$ | . . X O . . . . . , . . . . X , X . . |
$$ | . . X O . . . . . . . . . . . . . . . |
$$ | . . X 1 . . . . . . . . . . . . . . . |
$$ | . . 6 2 3 9 . . . . . . . . . . . . . |
$$ | . . . 5 4 7 . . . . . . . . . . . . . |
$$ | . . . . 8 . . . . . . . . . . . . . . |
$$ | . . . i . . . . . , . . . . . , . . . |
$$ | . . X . 0 . . . . . . . . . . . . . . |
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$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , O . . |
$$ | . . . O . . . . . . . . . . . . . . . |
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$$ ---------------------------------------[/go]