Five stones on the third line in the corner

    Keywords: Life & Death
[Diagram]

Five stones on the third line in the corner

This is the Five stones on the Third line in the Corner position and according to Segoe Kensaku's Go Proverbs Illustrated it is alive as it stands.

If it was not in the corner but on the side it would be the Five stones on the third line its status would depend on who moves first


Table of contents Table of diagrams
Five stones on the third line in the corner
Segoe's conclusion
White's option 1
White's option 2
A hasty attack
Against ''a'' above
Against ''b'' above

Segoe's conclusion

[Diagram]

Segoe's conclusion

Segoe's Go proverbs illustrated gives this diagram alone to show that this group is alive.

After W4 the group is undeniably alive. Depending on who plays next in this corner White lives with 4 to 5 points of territory

The Descent

[Diagram]

White's option 1

Against B1 descent, White may take the vital point with W2. B3 reduces White's territory slightly compared to above (B3 at a fails to White b).

[Diagram]

White's option 2

White's block at W2 allows Black to force a seki, nullifying the White territory. However White may later try a or even b depending on outside situation.

Hasty inside play

[Diagram]

A hasty attack

If black attacks at B1 here, W2 occupies another vital point and lives. a and b are miai.

[Diagram]

Against a above

Against the descent B1, W2 secures an unconditional life.

[Diagram]

Against b above

If Black tries to make a seki in the corner, White escapes with a clamp W8.


(Past /Discussion and [ext] Discussion thread on lifein19x19 (both lengthy and mostly wrong).

See also


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