Older cubers discussions

Remember those are not all parity (3, 4, 5 aren't, maybe others too). Parity is when two wings are switched and cannot be solved without rearranging some centres. Without parity, most cases are easy to solve intuitively by slice-and-flip. With parity, you can apply ANY parity alg (like, the easiest/fastest) and you will fix that wings/centres problem, meaning that even if your alg doesn't fully solve the case you've at least changed it to one that's easy to solve intuitively.
 
mark49152 said:
Remember those are not all parity (3, 4, 5 aren't, maybe others too). Parity is when two wings are switched and cannot be solved without rearranging some centres. Without parity, most cases are easy to solve intuitively by slice-and-flip. With parity, you can apply ANY parity alg (like, the easiest/fastest) and you will fix that wings/centres problem, meaning that even if your alg doesn't fully solve the case you've at least changed it to one that's easy to solve intuitively.
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That's my plan, I don't want to be breaking records, just want to be able to solve reliably and enjoy the puzzle without getting frustrated. I did the whole thing intuitively up to last 2 tredges, which had parity.

Earlier I did my second ever 5x5 solve, which had parity again, so I tried my 4x4 OLL parity alg with bad tredges UF and UB. It did make them solvable, but also messed up another tredge. Didn't mind, but I'd rather know why what I was doing helped to solve the puzzle. I'm currently AFP (away from puzzle), but will tinker some more later.

In other news, did about 60 3x3 solves earlier, and my rolling average for my main timer session c.700 solves) is now sub 20, and my Ao100 is nearly sub-19. Think I'm bordering on being faster than before I quit.

Next week is OLL week again, after bigger cube week this week!

Might try Noah's 3BLD tutorial one day but, from what I've read on this thread and elsewhere, I'm slightly concerned that BLD is life-consuming!!!


Sent from my iPhone using Tapatalk
 
Based on the above posts I fiddled with the Valk 3 tensions. I finally found that with exactly the correct tension, it is very fast without popping, but the tension needs to be exact! Even slightly looser and it pops; slightly tighter and it is slow. But when fixed correctly, it is amazing. As fast as the fastest Weilong GTS but way more controllable.
 
CLL Smooth said:
Sub-15 Ao12!!!
Particularly happy about this and no one in my normal life cares. Except Chris, and I already texted him.
So, I gloat...
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You have to post stuff like this, it motivates all of us!

Finally catching up on a couple days of posts, usually I find time to read off and on at work more to stay current.

Anyone see speed cube review's videos on making a magnetic GTS? It looks quite easy. I'm thinking I'll either do that or order a Valk magnetic eventually (if they are offering it?).
 
Jason Green said:
You have to post stuff like this, it motivates all of us!

Finally catching up on a couple days of posts, usually I find time to read off and on at work more to stay current.

Anyone see speed cube review's videos on making a magnetic GTS? It looks quite easy. I'm thinking I'll either do that or order a Valk magnetic eventually (if they are offering it?).
Click to expand...

muchacho said:
Yeah, it looks easy and I have a GTS that I don't use, so I ordered some magnets... and I'll make it stickerless:

It may ending being a very good cube for me, or just trash.
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Funnily enough I was looking at this myself last night but hadn't seen the video. The Valk looked like the pieces didn't come apart so I was planning on replacing the missing piece on my GTS to do it. I tried a GTS M recently and it was very nice.
 
Logiqx said:
Here's my personal version. It shows all of the L2E cases, distinguishes parity and also shows probabilities.

http://cubing.mikeg.me.uk/Big/L2E.pdf
Click to expand...
Thanks a lot Mike. Wonderful cheat sheet for L2E. I like the split in parity/non-parity and the names that help remembering the case like the slash/backslash, etc.

With all this chat about this I am now motivated and I think this Christmas I will try to learn them all (or some at least) and see if this improves my times a bit towards sub-3min. Do you know and use them all? If so, how much time do you think they're worth?
 
My take on L2E for 5x5:
You only need to know one alg for parity, for me it's case #2 of pipkiksass picture.
As for the non parity I "know" 3,4,5 (match flip cases) & 6 (=PLL parity), 7 can be done with 2 match-flip, and the remaining 4 parity cases I first do #2 then I always get a match-flip case.
 
Another of my two cents on 5x5. For me, the biggest factor in my improvement from sup-3 to low-2 was lookahead. The difference between a fast and slow solve is how fluid my centres, Hoya edges and edge pairing are. Lookahead is vital to all three phases to keep them moving, and also to F2L. Plus, use inspection to make a strong start on centres. I plan the first 2x3 block and expect to complete it in a couple of seconds while looking ahead for the pieces required to complete that centre. IMHO those things are more important than learning L2E algs.
 
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mafergut said:
Thanks a lot Mike. Wonderful cheat sheet for L2E. I like the split in parity/non-parity and the names that help remembering the case like the slash/backslash, etc.

With all this chat about this I am now motivated and I think this Christmas I will try to learn them all (or some at least) and see if this improves my times a bit towards sub-3min. Do you know and use them all? If so, how much time do you think they're worth?
Click to expand...

Quick notes about the original post from @Shaky Hands:
- 1 2 8 9 10 are parity cases (5 of the 8 that exist). Case 9 can also be solved RrU
- 3 4 5 6 7 aren't parity cases (5 of the 7 that exist... 8th case is solved)

I created my cheat sheet using a number of sources (Meep, Sarah Strong, Sir Waffle, Andy Klise, Big Cubes to name a few). I think I had to document my own intuitive solutions for a couple of the simple cases as well since they didn't appear in any of the guides. I recognise the images that Andy posted; Sir Waffle iirc.

I noticed that all of the L2E alg sources showed slightly different cases and I was intrigued by comments about the "rarest case" (originating from Big Cubes). I decided to create a definitive list of cases (16 in total) and their respective probabilities (1/12 or 1/24). I had a good conversation with @mark49152 where we bounced ideas around and confirmed the cases / probabilities from two different perspectives. It was a bit of a head scratcher but it was a fun activity!

I used to know all of the non-parity cases plus OLL Parity (tweak to my standard 4x4 alg) and Double Parity (some peoples standard 4x4 alg). I've subsequently forgotten the "PLL Parity" alg (AKA "Double Wing Swap with Flipped Midges") and Double Parity after a long break from 5x5. I might re-learn those two as they complemented each other and the double wing swap, looking similar when you ignore the subtlety of flipped edges.

I'll create a L2E page like my OLL/PLL/COLL algs at some time in the future but for now the PDF will suffice - http://cubing.mikeg.me.uk/Big/L2E.pdf

I agree with others on this topic. The biggest improvements are going to be from look ahead during centres, edges and F2L.
 
"I've ordered some magnets."

Magnetic therapy, to ease away the aches and pains in your tired old muscles? HeHe.

Seriously, as I've done a fair bit of hacking and modifying cubes over the years to try and make them halfway-decent, I hope your experiments are productive.

And don't swallow any of them.
 
mark49152 said:
Not PB but I'm pleased with the 2:35 execution, only a bit over double what it takes me sighted.

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Nice solve Mark. Very fluid and I think the hardest part for you were corners in the end. Your times show me the limits of my current skill - I mean although I can do all with 3style (centers, edege, corners) my times are much slower than yours, even if we compare execution. Mine is around 3 minutes, yours is much faster. Very nice.

And one more thing although I think you are aware of this - blinds methods are not moves efficient. If we compare 3bld and 3x3 speedsolves the difference is around 1.5-1.7. If CFOP solve is around 56 in average bld solves are around 90 (I'm not sure that number but when I reconstruct my solves they are around that number). I dont know how this is when comparing 4x4 and 4bld but it might be the same. Knowing it it's hard to compare solving stage of 4bld with solving 4x4 in a speedsolve.
 
mark49152 said:
Not PB but I'm pleased with the 2:35 execution, only a bit over double what it takes me sighted.

Click to expand...

Wow -- I'm not sure I'd realised quite how mind-blowingly good at this you are, Mark! This solve would be around 73rd in the world, if official, and your PB would be 67th!
 
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