It's not solvable into the "standard" solved state with the blank at the bottom-right, but it's solvable into the state with the blank at the top-left and the numbers still reading in increasing order left-to-right, top-to-bottom.
I think you should do the parity algorithm, the parity algorithm is the same as the 4x4 Pll parity alg with some modifications.I have solved a 7x7 cube multiple times. Now I cant solve because I am getting a PLL parity. It is happening every time I try to solve it. Any advice?
It sounds like you have an unsolvable state. You'll have to partially disassemble the cube and physically swap the two edge pieces that need to be swapped (you can do 3R2 F2 U2 3R2 R2 U2 F2 3R2 to swap the wings).When I try to attach pics I get an error that the file is too large. It looks just like a pll parity with the 4x4x4.
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