Posts: 202 Location: Raleigh, NC Liked others: 94 Was liked: 53
Rank: AGA 2 dan
GD Posts: 54
Still awash with US Go Congress fever
I have been watching basic shape videos on youtube and the teacher explained the shape in the bottom right corner of the board in detail. Video (25% opacity English subtitles available for lecture 1 and 2): https://www.youtube.com/watch?v=GAzNqhsTtH0
When replaying the above-mentioned game from Shusaku's collection - Shusaku vs. Hayashi Yubi [1861] - I came across the shape discussed in the youtube lecture in the bottom right corner of the board.
In the actual game, W - Shuusaku - played a bamboo joint, allowing white to hane at 15-18 and live comfortably.
[go]$$W $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . O . . . . . . . . . . . . . . . . . | $$ | . X . O . . X . . X X O . . . . . . . | $$ | . . . , O . . . . X O . O . X , X . . | $$ | . . X . . O . . . X O . . . . . . . . | $$ | . . . . . . . . . . O . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . X . | $$ | . . . X . . . . . . . O O . O O . . . | $$ | . . O X . . . . . , X X . . . X X . . | $$ | . . O X . . . . . . . . . X . . . . . | $$ | . O X . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . X O . . | $$ | . . . . . . . . . . . X 1 O O . . . . | $$ | . X X X X . X X . , . . . . X O O O . | $$ | . O O O O O O X . . . X O O X X X . . | $$ | . . . . . . . . . . . O 3 2 . . . X . | $$ | . . . . . . . . . . . . . 4 . . . . . | $$ ---------------------------------------[/go]
But I wonder what would have happened if W had played on the first line to try to kill the black group instead? Is there a way that B can live in the bottom right after W plays the move shown below?
[go]$$W $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . O . . . . . . . . . . . . . . . . . | $$ | . X . O . . X . . X X O . . . . . . . | $$ | . . . , O . . . . X O . O . X , X . . | $$ | . . X . . O . . . X O . . . . . . . . | $$ | . . . . . . . . . . O . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . O X . . . . . . . . . . . . . X . | $$ | . . . X . . . . . . . O O . O O . . . | $$ | . . O X . . . . . , X X . . . X X . . | $$ | . . O X . . . . . . . . . X . . . . . | $$ | . O X . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . X O . . | $$ | . . . . . . . . . . . X . O O . . . . | $$ | . X X X X . X X . , . . . . X O O O . | $$ | . O O O O O O X . . . X O O X X X . . | $$ | . . . . . . . . . . . O . . . . . X . | $$ | . . . . . . . . . . . . . 1 . . . . . | $$ ---------------------------------------[/go]
Black to play. I admittedly don't have an answer to this problem because the commentary doesn't cover it, but it seems to provide a continuation of the material in the youtube lecture. Unless... B is dead... and I am now stronger than Shusaku was.
My thoughts are below to start off with:
According to the youtube lecture, normally B attaches next to the white stone to start a ko, giving this sequence.
Posts: 6727 Location: Cambridge, UK Liked others: 436 Was liked: 3720
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
Koosh, 8 at 9 in the last diagram? Unless you give a dozen or two variation diagrams to show white can handle the cut I'll assume Shusaku was right that he needed to defend. Black could also try to save those 2 stones and then semeai with the white group on the right for example.
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Koosh
