<p>With the addition of the P17 stone, the enclosure is considered safe. The standard response to white R17 is black R16. R17 is a probe rather than an attempt to live, and in practice black's best answer will depend on the surrounding stones.</p>

<p>See these two links for more information:</p>

<p><a href="http://senseis.xmp.net/?443563Enclosure" rel="nofollow">http://senseis.xmp.net/?443563Enclosure</a></p>

<p><a href="http://senseis.xmp.net/?4435Enclosure" rel="nofollow">http://senseis.xmp.net/?4435Enclosure</a></p>

<p>Even without the presence of the P17 stone, <a href="http://senseis.xmp.net/?4463Enclosure33Invasion" rel="nofollow">the best white can get locally is a ko</a>.</p>

<p>If you <a href="http://eidogo.com/#search:ne:7x6:.15x.8x.7x.9" rel="nofollow">search this pattern on eidogo.com</a>, you'll see that this enclosure usually ends up as black territory.</p>

CC BY-SA 3.0
2016-06-13T02:00:04.773Z
Thanks, so if white invaded, say at the 3-3 point, would black play S15 in the diagram and attempt to kill it outright?
Hal
CC BY-SA 3.0
2016-06-14T06:44:52.353Z
@Hal answer edited with two more links
Christophe
CC BY-SA 3.0
2016-06-14T20:37:58.627Z
Thank you, I tried to find it on sensei's library but couldnt, because I kept looking for '354463' enclosure instead.
Hal
CC BY-SA 3.0
2016-06-12T22:39:13.267Z
2016-06-14T13:17:17.320Z
2016-06-14T13:17:17.320Z
Christophe
<p>I often see the following three stone corner enclosure made in high level games, when the player wants to further secure his corner.</p>

<p><a href="https://i.sstatic.net/xFp7d.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xFp7d.png" alt="enter image description here"></a></p>

<p>This enclosure does not appear on the sensei's library page for 3-3 invasions:
<a href="http://senseis.xmp.net/?AllAbout33PointInvasion%2FDiagrams" rel="nofollow noreferrer">http://senseis.xmp.net/?AllAbout33PointInvasion%2FDiagrams</a></p>

<p>Does any aji remain for white to invade this position in some way?  If so, what is the best way to invade it, and what is the expected result?</p>

CC BY-SA 3.0
2016-06-13T15:50:28.647Z
That pattern just showed up in a game between pros https://www.youtube.com/watch?v=jsyULqx-S20
Christophe
<go>
In Go, is there any aji left in this corner enclosure (3-5, 4-4, 6-3), and if so, how can it be invaded?
Hal
# In Go, is there any aji left in this corner enclosure (3-5, 4-4, 6-3), and if so, how can it be invaded?

(Asked by: username_0 on 2016-06-10)

I often see the following three stone corner enclosure made in high level games, when the player wants to further secure his corner.

[![enter image description here](https://i.sstatic.net/xFp7d.png)](https://i.sstatic.net/xFp7d.png)

This enclosure does not appear on the sensei's library page for 3-3 invasions:
<http://senseis.xmp.net/?AllAbout33PointInvasion%2FDiagrams>

Does any aji remain for white to invade this position in some way? If so, what is the best way to invade it, and what is the expected result?

**Tags:** go

> **Comments:**
> **username_1**: That pattern just showed up in a game between pros https://www.youtube.com/watch?v=jsyULqx-S20  

---

## 1 answers

### Answer by username_1 on 2016-06-12. Score: 4 | Accepted answer

With the addition of the P17 stone, the enclosure is considered safe. The standard response to white R17 is black R16. R17 is a probe rather than an attempt to live, and in practice black's best answer will depend on the surrounding stones.

See these two links for more information:

<http://senseis.xmp.net/?443563Enclosure>

<http://senseis.xmp.net/?4435Enclosure>

Even without the presence of the P17 stone, [the best white can get locally is a ko](http://senseis.xmp.net/?4463Enclosure33Invasion).

If you [search this pattern on eidogo.com](http://eidogo.com/#search:ne:7x6:.15x.8x.7x.9), you'll see that this enclosure usually ends up as black territory.

> **Comments:**
> **username_0**: Thanks, so if white invaded, say at the 3-3 point, would black play S15 in the diagram and attempt to kill it outright?  
> **username_1**: @username_0 answer edited with two more links  
> **username_0**: Thank you, I tried to find it on sensei's library but couldnt, because I kept looking for '354463' enclosure instead.  

---

