Is this the end?
It looks as if white has a big win. However...
If you surround too
large an area, Your opponent can "invade".
Black jumps into the white's area. Because there is plenty of room to dodge, black can build a group inside if he plays well.
This may be hard because white has a strong wall on the left of that area.
If black succeeds, he can reduce much of white's territory.
Although it's far
from the end game, white has better prospects.
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