Joseki

British Go Journal No. 0. Spring 1967. Page 4b.

Handicap (4-4 point)

Part B

This article continues from part A.

The symbol links to Dia 20 where selection of the 5 main variations discussed is possible.

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Diagram 20 (E,F,G,H,I are links.)

Options for White 5: E, F, G, H & I.

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White 5 at F

Diagram 21

This direct invasion of the corner is often played if White has a stone at or thereabouts, it gains a more stable group but solidifies black more.

Diagram 22 From Dia 21

Diagram 23 From Dia 21

(1) Black 1 in Dia 22 takes the corner completely and safely. Here both gain a large potential.

Or Dia 23. Black 7' may be at

Diagram 24 From Dia 21

Diagram 25 Variation in Dia 24

(2) In Dia 24, white 4 protects all the cutting points. The 7, 8 exchange is very important as it restricts white along the side and if White does not answer with 8 then black 9' at 8 and white 10' at J, black 11' at R is very bad for White.

Black 5' at 6 in Dia 24 is impossible, as shown in Dia 25.

Diagram 26 From Dia 24

Later white can take the corner with 1 to 5 as Black cannot stop him once he has cut, or Black will play S taking the corner.

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White 5 at G

Diagram 27

If black 6' at E and white 7' at F this transposes to Dia 24.

Diagram 28 From Dia 27

BGJ only had moves 1..2, moves 3..7 complete the joseki.

Diagram 29 From Dia 27

Diagram 30 Variation in Dia 29

In Dia 29, Black cannot play 3' at U otherwise Dia 30 loses the corner and gets no compensation.

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White 5 at H

Diagram 31

This sets out to test Black's response in order to gain later on.

Diagram 32 From Dia 31

Diagram 33 From Dia 31

(1) Black 1 takes the side whilst ceding the corner. However it loses something in comparison with Dia 24 above, as White plays 2..6. Not 6' at T in this case as now the threat at I does not exist. So Black 1 is not usually played unless Black has a stone at P already.

(2) Black 1 in Dia 33 is better, however in attacking the lower white group, Black permits a small but live group in the corner.
Then White 2 ensures life and after white 4 Black is left with reducing plays for later on.

Diagram 34 Variation in Dia 33

Diagram 35 Variation in Dia 33

Or Dia 34 where black 3 permits White a tiny group up to 8, and leaves a white sente play at U. White 10 stabilises this group.

In Dia 35, White plays 2 wishing to retain his stones on the lower side. Up to 7 Black has the corner, however White may play A..C reducing the corner by about 6* points, so Black should play Dia 36 quite early on.
* BGJ illegible, may not be '6'.

Diagram 36 From Dia 35

Or White 4' at T.

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White 5 at I

Diagram 37

Here White plays for influence along the lower side, but leaves Black with all the corner.

Diagram 38 From Dia 37

Diagram 39 From Dia 38

If Black 1' at Q, white 2' at 1 transposes to Dia 19. If black 3' at Q white will cut at 3 for a big fight which Black does not usually want. White 4 takes influence and possibly territory along the lower side. This leaves the reduction of the corner as Dia 39 which is similar to Dia 35.

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This article is from the British Go Journal Issue 0
which is one of a series of back issues now available on the web.

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