Blindsolving Accomplishment Thread

[dChan]

Well, I finally got serious about practicing BLD and have been practicing every day. Half of my solves lately have been behind my back and the other half have been normal blindfolded solves. I find now that there is little difference in time between the two now. So, anyway, my accomplishment is that I finally broke my BLD PB from a year ago(yep, I took a long break from cubing). I've actually had two 3:54.xx times before and nothing else under 4 minutes(that means no sub-4s that were not 3:54). I got 3:46.71 in the car yesterday and it was non-lucky and non-easy!

Sadly, yesterday morning I had a 3:15 DNF behind my back that only was a DNF because I cycled the last three edges the wrong way.

 

[MatsBergsten]

I've been wanting to do this for a while now - I finally did it this morning.

BH corners time attack: 1:05:17.83.

I think I can really say it now - I've learned BH corners!

What does this mean? One hour for what? Blindfolding through all different cases? That's nice!

 

[Mike Hughey]

I've been wanting to do this for a while now - I finally did it this morning.

BH corners time attack: 1:05:17.83.

I think I can really say it now - I've learned BH corners!

What does this mean? One hour for what? Blindfolding through all different cases? That's nice!

Well, sort of. Yes, it's all 378 cases. I went alphabetically, but doing inverses as I went. What I did was:
1. Say the name of the image for the case. First case was "BC - bicycle".
2. Close my eyes and perform the algorithm.
3. Open my eyes and make sure I did the right thing.
4. Say the name of the inverse of the image. First case was "CB - cab" (taxicab).
5. Close my eyes and perform that algorithm.
6. Open my eyes and make sure the cube is solved again.

So I went alphabetically. A is my buffer, so it was BC (then CB, as the inverse), BD (DB), BE (EB), etc. to BX (XB), then CD (DC), CE (EC), etc. on up through WX (XW). This covers all of the cases exactly once. It's easier to keep track of than a PLL time attack! (Even if it does take 40 times as long!)

I sincerely hope my next time attack is well under an hour. I bet Chris can do one in 30 minutes or less.

 

[MatsBergsten]

So I went alphabetically. A is my buffer, so it was BC (then CB, as the inverse), BD (DB), BE (EB), etc. to BX (XB), then CD (DC), CE (EC), etc. on up through WX (XW). This covers all of the cases exactly once.

Why do you have a letter (and a good one, A, at that) for your buffer?

(But I myself has wasted three by changing from Old Pochmann corners to TurBo corners. But I do not want to relearn them).

 

[Ville Seppänen]

So I went alphabetically. A is my buffer, so it was BC (then CB, as the inverse), BD (DB), BE (EB), etc. to BX (XB), then CD (DC), CE (EC), etc. on up through WX (XW). This covers all of the cases exactly once.

Why do you have a letter (and a good one, A, at that) for your buffer?

(But I myself has wasted three by changing from Old Pochmann corners to TurBo corners. But I do not want to relearn them).

Seems to be a common problem. I waste 2 good letters (A & M) for my buffer piece which I never memo with letters. But it's not that big of a deal.

 

[Mike Hughey]

So I went alphabetically. A is my buffer, so it was BC (then CB, as the inverse), BD (DB), BE (EB), etc. to BX (XB), then CD (DC), CE (EC), etc. on up through WX (XW). This covers all of the cases exactly once.

Why do you have a letter (and a good one, A, at that) for your buffer?

(But I myself has wasted three by changing from Old Pochmann corners to TurBo corners. But I do not want to relearn them).

Seems to be a common problem. I waste 2 good letters (A & M) for my buffer piece which I never memo with letters. But it's not that big of a deal.

I use exactly the same lettering scheme for corners as I use for X centers on big cubes. Since I don't use a fixed buffer for X centers (so far, anyway), I need it there to keep track of the buffer I'm using. So I'm stuck with it on corners too.

And it's no big deal - it's not like any of my letters are any better or worse than any other ones - all of my images are very solid now.

 

[joey]

Man, I really need to practise before my next two comps.

 

[MatsBergsten]

Man, I really need to practise before my next two comps.

You are welcome in the weekly comp

 

[qqwref]

Finally!!!
Pyraminx Crystal Blindfolded - István

4 : 1

Successful for the 5th attempt!!!
Time: 48:29.42
Memo: 26:26
Execution: 22:03

Whoa, very impressive. How do you do a corner cycle?

 

[Pitzu]

Finally!!!
Pyraminx Crystal Blindfolded - István

4 : 1

Successful for the 5th attempt!!!
Time: 48:29.42
Memo: 26:26
Execution: 22:03

Whoa, very impressive. How do you do a corner cycle?

It's more or less the same as for Megaminx. The only difference is that it affects 7 edges. So it's a 3-cycle for corners and 7-cycle for edges. That means if you do it 7x you get a 3-cycle for edges.
OK, it's not a nice solution but at least works.

 

[Mike Hughey]

Awesome job with the Pyraminx Crystal, István!

My latest news: today I beat my personal best on 7x7x7 BLD:
53:10.87 (22:51 memorization)

I was very happy with the memorization time, and the memory was quite secure (which is nice, because I've been having a lot of trouble lately). The execution was very slow because on three separate occasions I cycled the wrong pieces, but in each case I caught it, figured it out, and fixed it successfully. I also had a little trouble figuring out how to deal with the parity on the BH corners, which I was figuring out how to do during the solve. I finally decided on the really big cubes to just always move my parity corners to UBL and URB, so I could solve at the end without ever having to think about what to do (solve with a T perm). And this case had one of those two corners twisted (a non-T-perm solution), so I decided to do two commutators to fix it.

Still a long way to go to catch Ville, but at least I will once again be second on the UWR list.

I decided to check my old records to see how I've been doing. This one was after 5 straight DNFs, so it was a welcome relief to get this one. My overall record:
2008: 9 correct out of 29 attempts
2009: 4 correct out of 17 attempts
Total: 13 correct out of 46 attempts = 28% accuracy

6 of those 46 attempts were my 3 multi attempts, where I missed them all. So for single solve attempts only, I'm 13 out of 40.

 

[daeyoungyoon]

YaY I got my first blindfold solve today!!! Didn't really time myself since I was only focusing on trying to actually solve it but it was between 10-15mins. Could've done it faster but I was like rechecking the whole solve in my head like 10times before I started.

 

[byu]

Wow! Great job!

 

[SimonWestlund]

Congrats on beating Mátyás Kuti Mike! Nice time!!

 

[Mike Hughey]

BH corners time attack: 1:05:17.83.

BH corners time attack, second attempt: 56:15.97.

I'm getting better. And I'm much better at the columns cases, even if they do still take me longer than most of the others.

 

[ManasijV]

I beat the Indian NR holder in a BLD cube-off today.

Yes Mande you were awesome even though i didn't exactly see you or Karthik solve. But I'm getting better and maybe next time its my turn

 

[ManasijV]

Ok I finally started practising memorization in the evening. Its night now and i got a sub 4 already watch out all Indian cubers!

 

[SimonWestlund]

BH corners time attack: 1:05:17.83.

BH corners time attack, second attempt: 56:15.97.

I'm getting better. And I'm much better at the columns cases, even if they do still take me longer than most of the others.

Wow, your hands must be soooo tired afterwards!! That's a long time to execute algorithms!

What time do you think is possible for you on this?

 

[Mike Hughey]

BH corners time attack: 1:05:17.83.

BH corners time attack, second attempt: 56:15.97.

I'm getting better. And I'm much better at the columns cases, even if they do still take me longer than most of the others.

Wow, your hands must be soooo tired afterwards!! That's a long time to execute algorithms!

What time do you think is possible for you on this?

Mainly my brain is tired afterwards. I was about two-thirds through and hit a really easy A9 one and just sat there for about 30 seconds trying to remember what a commutator was. But at this speed, the algorithms are pretty slow, really. They're my typical speed, which is outrageously slow for most people. (Calculation: it's actually about 9 seconds per algorithm. Very very slow.)

I suspect it's quite easy for someone good to get sub-30 minutes on this. But it'll be hard for me to get that fast, probably.

I do think it helps to do these. Every time I do one, my 3x3x3 BLD solves seem to improve dramatically.

I'm really curious how fast Chris or Daniel would be at this. But probably they're too smart to waste that much time on one. And I'd really LOVE to see how fast Haiyan could do one.

 

[marineasalia]

first sub 8 bld 3x3x3
7:54.00 D' L' B' F D L2 R U' L2 R' D2 U' R' D' U L F' R2 B2 L2 R' D U' R2 B'
learned bld about a week ago

Good work!

How many successes do you have?

sorry didnt see ur post earlier.. at that time i had around 6-7 successes ... havent practiced since..