<p>Liam showed a good way to kill the invasion already, but you can be even more mean and play 2 at 4:</p>

<pre><code>$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ ......2.|
</code></pre>

<p>If white then plays 3, you just draw back instead of playing below 1, and you avoid a cut at 4:</p>

<pre><code>$$Wm1
$$ ----------
$$ .....c..|
$$ ...Xb.a.|
$$ ...X.1..|
$$ ....X.3.|
$$ .....42.|
</code></pre>

<p>Then, a, b and c are miai to kill.</p>

<p>The cut would not usually be dangerous, but it at least allows white to get 1 or 2 outside sente moves in the area, which is more than she should get - the original invasion at 3-3 was way too deep (the deepest possible would be white 1 at 2 in the above diagram, but that is a bit advanced, don't worry about it too much).</p>

<p>White may try to be sneaky and return to the variation with the cut present like this:</p>

<pre><code>$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ .....32.|
</code></pre>

<p>In that case, you can easily play at 6 instead of a to gain more and avoid white's sente atari at 6. The white inside group is still dead as per what we saw above.</p>

<pre><code>$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1a.|
$$ ....X45.|
$$ .....32.|
$$ ......6.|
</code></pre>

CC BY-SA 3.0
2015-06-16T09:38:22.887Z
2015-06-16T09:38:22.887Z
mafu
<p>Black 6 should be at white 7. After this white dies uncondittionally.</p>

<p><a href="https://online-go.com/demo/66482" rel="nofollow">https://online-go.com/demo/66482</a></p>

CC BY-SA 3.0
2015-06-15T23:31:22.600Z
2015-06-15T23:31:22.600Z
 Liam
<p>With the three black stones placed, I did the <a href="http://senseis.xmp.net/?AllAbout33PointInvasion" rel="nofollow">3-3</a> invasion.  </p>

<pre><code>$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ ........|
</code></pre>

<p>I tried tried to force a <a href="http://senseis.xmp.net/?Ko" rel="nofollow">KO</a> and did get 2 moves elsewhere, but I would rather have lived.</p>

<pre><code>$$Wm1
$$ ----------
$$ ........|
$$ ...X..5.|
$$ ...X.O.7|
$$ ....X236|
$$ ......4.|
</code></pre>

<p>Does 3-3 invasion work here?</p>

<go><invasion>
Does the 3-3 invasion work with 3 stones already placed?
john mangual
# Does the 3-3 invasion work with 3 stones already placed?

(Asked by: username_0 on 2015-06-15)

With the three black stones placed, I did the [3-3](http://senseis.xmp.net/?AllAbout33PointInvasion) invasion.

```
$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ ........|

```

I tried tried to force a [KO](http://senseis.xmp.net/?Ko) and did get 2 moves elsewhere, but I would rather have lived.

```
$$Wm1
$$ ----------
$$ ........|
$$ ...X..5.|
$$ ...X.O.7|
$$ ....X236|
$$ ......4.|

```

Does 3-3 invasion work here?

**Tags:** go, invasion


---

## 2 answers

### Answer by username_1 on 2015-06-16. Score: 4

username_2 showed a good way to kill the invasion already, but you can be even more mean and play 2 at 4:

```
$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ ......2.|

```

If white then plays 3, you just draw back instead of playing below 1, and you avoid a cut at 4:

```
$$Wm1
$$ ----------
$$ .....c..|
$$ ...Xb.a.|
$$ ...X.1..|
$$ ....X.3.|
$$ .....42.|

```

Then, a, b and c are miai to kill.

The cut would not usually be dangerous, but it at least allows white to get 1 or 2 outside sente moves in the area, which is more than she should get - the original invasion at 3-3 was way too deep (the deepest possible would be white 1 at 2 in the above diagram, but that is a bit advanced, don't worry about it too much).

White may try to be sneaky and return to the variation with the cut present like this:

```
$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1..|
$$ ....X...|
$$ .....32.|

```

In that case, you can easily play at 6 instead of a to gain more and avoid white's sente atari at 6. The white inside group is still dead as per what we saw above.

```
$$Wm1
$$ ----------
$$ ........|
$$ ...X....|
$$ ...X.1a.|
$$ ....X45.|
$$ .....32.|
$$ ......6.|

```


---

### Answer by username_2 on 2015-06-15. Score: 1

Black 6 should be at white 7. After this white dies uncondittionally.

<https://online-go.com/demo/66482>


---

