3-3 Point Invasion
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Difficulty: Beginner
Keywords: Joseki
The information on this page is meant for weaker kyu players. Stronger kyu and dan players are advised to look at 4-4 point 3-3 invasion joseki instead.
![[Diagram]](../../diagrams/48/3a9e4326f32da0ca6c0656802749ad67.png) | The 3-3 point invasion |
Many weak players fear the invasion of in this diagram. Playing Black, they have the idea that their corner territory is taken away, and are, in a sense, correct. After , it is White rather than Black who will make territory in this corner.
Nevertheless, Black should welcome this invasion. Black shouldn't see this move as an attack on Black's territory; the 4-4 point is not meant to take the corner, but to make thickness and seek a balance between territory and influence. The white invasion at is separated from the rest of the board by the black stone on the 4-4 point. By playing correctly Black will get a strong position. Because of this, stronger players play only if the position on the edges is such that a white stone at a or b will come under attack.
Prevention
![[Diagram]](../../diagrams/51/4ec6be6f5b0a814d6b0527e2d2461e6a.png) | Prevention |
The usual way to prevent the 3-3 point invasion is a stretch at or
a depending on where friendly stones are nearby. The
one-space jump at b or c and the diagonal at
d can also be used, though they are seen less frequently.
Invasion Joseki
![[Diagram]](../../diagrams/8/7beae5650768e23801f67f2c0fe198cb.png) | Joseki |
To Black will invariably answer with (or Black at , on the other side). ensures that White's corner will not be too small. is an important move, pushing White towards the side and reducing the size of the White's corner. White plays at to avoid Black playing at the same point. The severe double hane of at 7 can be considered more advanced. After , Black should stretch at .
![[Diagram]](../../diagrams/18/039c99df6ce5015022dc4ff8e43538a0.png) | The joseki continues |
Next, White plays hane at , and the joseki ends with . White has sente and a few points in the corner, but Black's wall is like a block of concrete, controlling a large part of the board. This result is regarded as good for Black locally, but is often White's best choice, nonetheless. Later in the game the cut at at a might be a problem for Black, see Squeeze for more discussion how and when to defend.
![[Diagram]](../../diagrams/38/26771fe6632fc440b9e0dd141fb6f848.png) | Overplay |
here instead of in the joseki ( in this diagram) is overdoing things. After , Black has problems.
![[Diagram]](../../diagrams/10/a7d3e5bd9f16234761d4376d1e9a44b0.png) | Overplay (2) |
White could also attack the black stones at the left with these moves. Either way, White has destroyed Black's thickness, and has good chances of getting even more.
Charles I've seen a pro as White play directly at after here.
Variation where White ends with fewer points, and Black ends in gote - ZeroKun
![[Diagram]](../../diagrams/52/d99b0b7fc2b8e334f9149e2b48f84e1c.png) | Variation |
Charles This is a trick play, discussed at 4-4 point 3-3 invasion joseki, hane inside cut.
Variations
This joseki has a few variations, most of them designed to give Black the possibility of ending in sente. If you want to look at them, see 4-4 point 3-3 invasion joseki.
Queries
![[Diagram]](../../diagrams/40/e38dc744c962ffa3c9ef86c76bd495c7.png) | Queries |
mat Very often I ask myself if a 3-3 point invasion still works in the presence of more than one black stone. I've set up a page to discuss which of those work and which don't: 3-3 Point - When Does It Work
Original authors: Andre Engels, Adamzero, JamesA
Path: InvasionItinerary
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This is a copy of the living page
"3-3 Point Invasion" at
Sensei's Library.
2003 the Authors, published under the OpenContent License V1.0.
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