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Is it possible to detect the OLL parity of a scrambled 3x3 cube directly?
I have reduced the 4x4 cube to a 3x3 cube. How can I check the parity of the resulting 3x3 cube - to check if an edge has been flipped?

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  • $\begingroup$ These are two distinct questions; an answer can address one without addressing the other at all. Perhaps you could edit to remove one question, then ask a new question which contains the other one. You may link the questions together. On this site, there should be only one question within each question, that way answerers may focus on a single question, and there can be a single best answer per question. $\endgroup$
    – bobble
    Mar 2 at 5:00
  • $\begingroup$ Your first question is answered here. $\endgroup$ Mar 2 at 9:01
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    $\begingroup$ Your second question is answewred here, here, and here. $\endgroup$ Mar 2 at 9:11

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