System's Twilight Hint Guide:

To Your Head

I need help on the third puzzle.
Here are the types of triples and the order you can select them in. If you select them in this order, then you should never be unsure which to select.
Order Shape Color Number
1 diff same same
2 diff same diff
3 same diff diff
4 diff diff same
Be careful; this puzzle is designed so that you'll see three identical pieces, but it's not a triple!
Hint Guide by Wei-Hwa Huang
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