: ( 222ae)
Black connects at the upper edge.

:
White closes her territory at the top, also preparing for an attack at Black's upper left corner.

:
Black takes the opportunity to secure his territory in the lower left corner.

:
White starts with a submarine attack.

:
Black connects.

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White's push at the top creates a cutting point in Black's formation.

:
White peeps.

:
Black keeps his stones connected.

:
White separates Black's troups.

:
Black immobilises White's stones, so winning the fight in the corner.

:
White's push at the left edge does not lose a tempo in the Main Semeai, as Black will have to capture at , before he will be able to occupy her remaining liberty in the upper left.

:
White secures her territory at the right edge.

:
Black secures his territory in the left centre in return.

:
The Main Semeai continues.

Black must not play any reduction.

After her decision point, White will occupy the point of , securing her point of territory in the right centre.

Capture Variation:

Compared to the superordinate variation ...

• Black's cumulated loss in the upper left corner is three points.
• Black destroyed one point of White's territory at the top.
• White did not capture Black's stone in the upper right corner, so losing two points.

In total, gains and losses compensate for each other.

White + 3 => White + 3

Semeai Variation:

Compared to the superordinate variation ...

• Black's cumulated loss in the upper left corner is three points.
• Black destroyed one point of White's territory at the top.
• White captured an additional Black stone at the upper edge, so gaining two points.

In total, Black lost four points.

Black + 8 => Black + 4