That is, try to get two eyes.
If you still don't understand the concept of 2 eyes, go back.
In the figure below, does the black group has two eyes?
There is an eye at F5.
D5 seems to be an another eye because it is surrounded with 4 stones nearby.
However, it is not an eye because C5 is in Atari and you have to connect at D5.
Thus you have only one eye - which means death.
We call the eye like D5 a false eye.
Try to live there.
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