Beginner Blindsolving OP/M2 Questions

[Loic Gagnon]

Hi, i'm a relatively new blindsolver and have just started practicing solves.
During my practice, i encountered a huge problem:
At the end of my M2 targets there were always two unsolved edges, The Buffer (DF or U using Speffz) and the target position (UB or A using Speffz). I do the Q algorithm and it brings me to the A setup move, the i do the A setup move and it brings me back to A over and over again in a loop.

Any advice? Thanks!

 

[aybuck37]

Hi, i'm a relatively new blindsolver and have just started practicing solves.
During my practice, i encountered a huge problem:
At the end of my M2 targets there were always two unsolved edges, The Buffer (DF or U using Speffz) and the target position (UB or A using Speffz). I do the Q algorithm and it brings me to the A setup move, the i do the A setup move and it brings me back to A over and over again in a loop.

Any advice? Thanks!

Hmmm. I'm not the best at blind but did you have an odd number of letters in corners? That might be the problem?

 

[biscuit]

I believe what you described is M2 "parity" (note: It's not parity in the generally cubing sense, it's specific for bld) Go watch a M2 tutorial and it should be covered.

 

[Loic Gagnon]

I believe what you described is M2 "parity" (note: It's not parity in the generally cubing sense, it's specific for bld) Go watch a M2 tutorial and it should be covered.

Thanks alot! Will definitely check one out!

 

[Loic Gagnon]

Hmmm. I'm not the best at blind but did you have an odd number of letters in corners? That might be the problem?

Thanks for your help!

 

[newtonbase]

Yes,it's just parity. In 50% of your solves you will have an odd number of edge targets and an odd number of corner targets (it's never one or the other, always both).
As you have noticed this leaves you off by M2 after edges and you'll have a similar complication with corners. To counteract this you need to do the parity alg after edges and before corners. This is D' L2 D M2 D' L2 D. Try it on a solved cube to see what it does.
If you are memorising using letter pairs it's always obvious when you have an odd number.

 

[Rpotts]

Or you can use (U' F2 U) M2 (U' F2 U)

 

[Loic Gagnon]

Yes,it's just parity. In 50% of your solves you will have an odd number of edge targets and an odd number of corner targets (it's never one or the other, always both).
As you have noticed this leaves you off by M2 after edges and you'll have a similar complication with corners. To counteract this you need to do the parity alg after edges and before corners. This is D' L2 D M2 D' L2 D. Try it on a solved cube to see what it does.
If you are memorising using letter pairs it's always obvious when you have an odd number.

So you're saying every solve i should leave the D(UL) till the end so i can do this algorithm? Because when i do it, there is only the target position and buffer remaining i can't finish it.

 

[newtonbase]

So you're saying every solve i should leave the D(UL) till the end so i can do this algorithm? Because when i do it, there is only the target position and buffer remaining i can't finish it.

Are you doing a full memo first and then doing the whole solve?

 

[Loic Gagnon]

Yes.

 

[newtonbase]

I would need to see the solve to understand the problem.