: ( 434)
Black's jump to loses a few points, but White will not be able to win. The sequences here follow suggestions of Yoon YoungSun 8p.

: (A 440)
White fixes the shape on the left side first, to deny Black the potential forcing moves against her group on the upper edge.

Michael Redmond was so kind to show us another decisive tesuji in conjunction with White connecting her stone that gains two points for White, making the game even closer.

:
The connection on the forth line at first reduces the territorial size and the tactical importance of the corner capture.

:
Cutting directly at is often the tesuji in this shape. This move denies Black the option of playing at , and forces Black to choose between , and .

: (A 451; 98 453)
Holding back at , instead, is too cautious. White will gain a sure win. Black's corner will collapse immediately, should Black play at .

: (B 454)
Please note that Black must not give the tempting atari on White's five stones, with a move at . After White's move at , Black's position will collapse immediately.

:
If White plays at , instead, she will not have enough ko-threats to start the ko with next.

:
White will lose points when Black switches to the large move at on the right edge.

:
This forcing move is larger than it looks like. It eventually enforces a White move at .

:
to is a slight gain for Black, compared to allowing , forcing .

:
to is theoretically larger than a move at , but the final result is the same.

:
Please note that - as mentioned earlier - White's move at will eventually be necessary. After all the marked points on the left edge were occupied, a Black move at would be an atari that White could not connect.

Black wins by one point.