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Just finished it, 8/8. I mostly approached it by winging it and shuffling things around that looked good and like it was approaching the goal, since there's plenty of time to finish.

I still don't quite understand the exact mirroring rules at play.

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You control the mirroring by moving the axis, they're what reflects your shapes. So my first move was always to identify the symmetries in the target shape, and position the axis accordingly.
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This is the correct strategy for this particular game (center the mirrors between the yellow squares, move the black squares). I didn't realize it until about round 6 or 7.
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I got stuck on 7/8 for a good while because I learned the rules wrong. I thought every bracket square needed to be lit.
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You are joking right?
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That one was interesting - I found it a lot of work to plan in advance but trivial to complete because at every point there was only one sensible course of action. After a couple of rounds I didn't bother planning and just lined things up as I went.
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The most difficult thing about this was controls being unresponsive (at least on firefox).
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solved first try with 577 actions, not trying hard to optimize for low action count.
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I also see 577, so must be human testers action count. Also watched the replay, the solve seems different to mine.
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I think that is the tester's action count. Either that or we coincidentally got the exact same count.
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I did the first round literally in 5 secs. How can you not 'get it'? lol
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