So I've been thinking about how differently a game of Go would be played if high dans decided to play a game of capture Go. Obviously, the objective is still to have more territory than your opponet since there's no passing and, eventually, someone is going to have to fill in their eye towards the end of the game. Notice I said eye and not eyes since you only really need a two point eye space to live. Besides that:

Snapback is impossible
Ko is impossible
Sacrifice of stones is impossible
You absoloutly cannot get trapped in a net or a ladder
You have to save every single stone on the board making every group automatically heavy
attacking becomes harder since a group only needs one eye to live
etc.

and you still have to make more territory than your opponet overall.

So I'm wondering how a game of high level capture go might go down, be it by 1d+, 5d+, or 1p+.

Well I think ladder and net would still work, but this is an interesting idea.

I also wondered about a similar variation of GO: which would not allow to play a 0 liberty stone even if it would capture a group. That would also mean: one eye enough to live, no KO, no snapback, no false eye.
I wonder if the complexity of that game could be similar to GO or not...

Lol this sounds amazing.

open with 4-4 stone
invade at 3-3
counter invade with 2-2

Good luck trying to pull off a leaning attack.
Good luck attacking at all.

table shape is alive
3 kosumi is alive