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[Help Thread] Impossible Puzzle State

JTM007

Member
Joined
Feb 6, 2020
Messages
53
I'm pretty sure one of my pieces edge pieces is twisted on the last layer of the megaminx. I do the L algorithm and the bar algorithm to try and get the grey star. But only four grey pieces are up right.
 
Joined
Jul 13, 2019
Messages
81
Location
Earth
Is it me, or is my square 1 impossible to solve? It has 2 blue red yellow corners,and 2 red-green-white corners.
Video of Square-1:
 

abmbrodriguez

Member
Joined
May 11, 2020
Messages
3
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?
 
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Mar 16, 2020
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well, a country.
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?
I think you should do the parity algorithm, the parity algorithm is the same as the 4x4 Pll parity alg with some modifications.

edit : odd layered cubes like the 3x3 doesn't have parity, you'll have to swap the pieces by taking the pieces out.
 

abmbrodriguez

Member
Joined
May 11, 2020
Messages
3
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.
 

CuberStache

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May 7, 2018
Messages
689
Location
Washington State, USA
WCA
2016DAVI02
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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.
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).
 

xyzzy

Member
Joined
Dec 24, 2015
Messages
1,924
Alternatively, if you're using a cube without coloured centre pieces, cycle four of the centre caps (e.g. white-green-yellow-blue) and re-solve.
 

abmbrodriguez

Member
Joined
May 11, 2020
Messages
3
No not yet. Honestly, I dont know how. However, I believe my son may have messed with the center pieces. I found them off of the cube yesterday. I put them back perfectly. I do know how they could be messed up. Its yellow on top, white on bottom, and (from left to right) blue, red, green, and orange.
 
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