Blindsolving Accomplishment Thread

[aronpm]

Average of 5: 58.452
51.656, (DNF(56.439)), 1:05.240, 58.461, (49.752)

All NL. The 49 had 1 corner solved.

 

[bint2d]

NL = ? :confused:
Thank you very much.

 

[joey]

Non-lucky.

 

[Mike Hughey]

I just want to get it right: you use those matrices to convert non-square shape to square shape. But not just conversion moves, those must also include info about which pieces are moved where at the same time, not just the shapes.

Yes. For each case, 1 image helps with remembering how to get to square (because I still don't know them automatically ), and 8 images tell where each piece moves so I know where they all are when square.

Then from there on you solve it like normal bld .

Exactly.

I will definitely check your site, maybe then I can learn square-1
(I also learned 4-bld and 5-bld before I could do 4x4 and 5x5 sighted)

It hadn't occurred to me before - you're the obvious person to do this next - it should be so easy for you to memorize the matrices, compared to memorizing pi. It's such a small amount for you to memorize - only 800 images!!!

Mike, what corner 3-cycle do you typically use? (And if you have a 2-cycle of corners and a 2-cycle of edges, do you always use a J or N perm or do you know other cases as well?) I've considered trying a Square-1 blindfolded but I have trouble actually cycling the pieces.

I'll have all the algorithms on the website when I finish it, but they're mostly quite obvious. I use a normal A perm for the corners - what Jason Baum has on his website - and then use setup moves as needed. It never takes more than 2 setup slice moves. For edges I use either U perm or another alg I learned for UB - UF - DR. Those algorithms mean no more than one setup turn for edges. Then I use UF-UR edge parity (Dan's) and ULB-ULF corner parity (which still takes me over 15 seconds to do - pathetic). And yes, if I have a 2-cycle of corners and a 2-cycle of edges, I use a J perm exclusively. For safety, I always put my edge 2-cycle at UB-UL, and my corner buffer is at UBL, so I can always set up a J perm with corners at either UBR (which I almost always do) or UFL (if the corner is already there) with no more than two slice-turn setups (two only for the case where the corner is at UFR).

And congrats Aron on your sub-1 average of 5! You've gotten so good so fast!

 

[joey]

Mike:
Do you memo where the pieces end up, and then the cycles from there?

 

[Mike Hughey]

Mike:
Do you memo where the pieces end up, and then the cycles from there?

I memorize the cycles directly, as they will be once it's square. The tricky part is juggling the memo that I'm recalling for the translation with the memo that I'm creating for the solution after getting to square.

 

[joey]

How about you just memo what it's going to look like, put the blindfold on, and work out the cycles from there.

 

[qqwref]

Mike, what corner 3-cycle do you typically use? (And if you have a 2-cycle of corners and a 2-cycle of edges, do you always use a J or N perm or do you know other cases as well?) I've considered trying a Square-1 blindfolded but I have trouble actually cycling the pieces.

I'll have all the algorithms on the website when I finish it, but they're mostly quite obvious. I use a normal A perm for the corners - what Jason Baum has on his website - and then use setup moves as needed. It never takes more than 2 setup slice moves. For edges I use either U perm or another alg I learned for UB - UF - DR. Those algorithms mean no more than one setup turn for edges. Then I use UF-UR edge parity (Dan's) and ULB-ULF corner parity (which still takes me over 15 seconds to do - pathetic). And yes, if I have a 2-cycle of corners and a 2-cycle of edges, I use a J perm exclusively. For safety, I always put my edge 2-cycle at UB-UL, and my corner buffer is at UBL, so I can always set up a J perm with corners at either UBR (which I almost always do) or UFL (if the corner is already there) with no more than two slice-turn setups (two only for the case where the corner is at UFR).

Your site sounds very interesting. I'll be happy to see it up

And congrats Aron on your sub-1 average of 5! You've gotten so good so fast!

Not as fast as Anthony But yeah, Aron improves fast. It's amazing.

How about you just memo what it's going to look like, put the blindfold on, and work out the cycles from there.

Sounds like my idea of fixing bigcube parity by memorizing your cycles and then just executing everything an r off. Unfortunately it seems to be that you waste more time and make more mistakes when trying to add/trace new cycles during exec.

 

[joey]

I actually think it'd be faster, obviously exec would be slower but unlike bigcubes you wouldn't need to break into cycles THAT often nor do you have to worry about orientation.

 

[cmhardw]

How about you just memo what it's going to look like, put the blindfold on, and work out the cycles from there.

Sounds like my idea of fixing bigcube parity by memorizing your cycles and then just executing everything an r off. Unfortunately it seems to be that you waste more time and make more mistakes when trying to add/trace new cycles during exec.

Oh wow... I never thought about this. I'm going to have to try this. It seems that this could certainly save time on the 4x4x4, and maybe also the 5x5x5. The same could also be done with the corners, and central edges if it's a 5x5x5, by solving everything an R turn off as well.

Wow... That's cool!

--edit--
Yes Michael, I see what you mean about tracing new cycles. I just attempted this on a 3x3x3 by purposefully giving myself corner/edge parity, and it seems that this will not work very well with 3 cycles for that reason. Perhaps that wouldn't be too bad with a 2-cycle method? Maybe not as bad as with 3 cycles?

Chris

 

[joey]

Solving to an r off.. in my mind would add more than the 3-4s parity takes..

 

[Mike Hughey]

I got a 1:16.xx 3x3x3 BLD at the Indianapolis cubing meetup in Keystone at the Crossing Mall, with a big audience watching, including a security guard. My only attempt.

 

[aronpm]

Solving to an r off.. in my mind would add more than the 3-4s parity takes..

Exactly what I was thinking. I tried a 3bld solve once where I checked for parity, and then memorized with a 'premove' U to fix parity. In my opinion it's probably just easier to do the parity algorithm, whatever puzzle it is.

 

[joey]

I did premoves once, to get a 2x2x2 solved.. but gave myself parity

 

[cmhardw]

I did premoves once, to get a 2x2x2 solved.. but gave myself parity

You can also use the "U Method". Since U is a 4 cycle of corners with no other effect, in some simple cases you can setup the next 3 pieces of your cycle into the U layer, do a U, and undo the setups. It doesn't happen often that the setup moves are easy, but I try to do this when I can.

Chris

 

[joey]

Ah chris, I remember your post on that

I actually meant that I did a D/D' on a 3x3x3, to solve a 2x2x2 block.

 

[TMOY]

After a lot of DNFs, finally got a successful 5BLD solve
The time was 20:15 (7:30 memo).

 

[Sakarie]

I didn't get any 4x4 or 5x5 on swedish open, but I did get 1 3x3, 1:29. I can't say that it's a extraordinary good time, but at least it was nice to make one okey result in the competition.

 

[Zane_C]

After a lot of DNFs, finally got a successful 5BLD solve
The time was 20:15 (7:30 memo).

Congratulations, very nice time. :tu

 

[KJiptner]

I wanted to wait with this until after German Nationals to keep the pressure low. It seemed to work, since I did 58.55 officially (I was spazzing so hard, lost the entire tension of the last 3 years with my mediocre 3x3 BLD-performances).

1.5 weeks ago I achieved sub-1 Avg of 12 This was my biggest goal in cubing ever since I got my first sub-1 single in late 2007. Back then I was one of the first to achieve that (M2+3OP, also proving the speed of M2). But I was having bad accuracy with short-term-rush-through-it memory method back then. This took me so long, because I've changed my entire method in 2008 (adapted loci-method with letter-pairs and my own version of TuRBo-corners) I couldn't stand my bad accuracy anymore and was inspired by the amazing feats of Tim and Dennis of course. In 2009 this switch really started to pay off (as you might know).


Average of 12: 58.01

Spoiler

Individual Times:
1. 58.76 B F2 D2 U' B2 F2 D L R' U L2 B' L2 U2 R' D2 U B' D U' F' U B2 L F'
2. 56.24 B2 U' F2 R' D L R' D2 U2 F' L D2 U B2 F2 R2 U2 B' D U2 B F L R' F2
3. 56.98 R B2 F D' B2 D U' B L' R' B D L' R' B2 F L2 R' D' L' F2 L' B R B
4. 49.74 U B2 F U R2 D' F' D R2 D U' B' D' B' F' U2 F L U L F' D' U' L' U
5. 1:13.38 U' R' B2 F U' B L2 R B' F2 D2 R B L U2 F L' R' D F2 U' R F R F2
6. 1:03.24 L D' F D2 B L2 R2 B' F R B' F2 D' F R' B' F2 D U2 F L' B2 U' L2 R'
7. 49.42 D2 U' B2 L' R2 D' R D' U' L' D2 U2 R' B2 L B U L2 B2 F' D F L2 R' U
8. (DNF) B D2 U' B F' L' R U' F' L F L D2 F2 R F2 L2 F2 U' B F D U' R2 F'
9. (47.90) B' D2 U2 B2 F D' R' B' F2 D2 U2 R' B' D' U B' F' D' B' U L R' B' R' B2
10. 1:01.69 R D' U' B U2 R2 F L' B' F U L' B2 L2 U' R' U' L' D' U' F' D U R' U'
11. 54.59 D L2 D' R' B' F' D U B2 F' L' F' U B2 L2 R' D2 R' D' U' R2 B' F R2 B'
12. 56.05 B2 F' L' R' B' U' R B2 D U' B2 R2 B2 D2 L2 R2 F' L' F' L2 R' D2 B F2 R'

A few days later I did

Average of 5: 52.71

Spoiler

Individual Times:
1. 47.67 D2 U B' F2 D U R' B2 R2 F L2 F2 L R' B' R' B' F L B D' B2 U L' R
2. (1:31.27) B2 U2 L' R D2 U' B F2 D2 U L2 D2 L R' D' R2 D2 F2 D2 U F' D2 U2 B F
3. (47.01) D' B2 R D B2 F2 L2 R2 B' F2 U2 L' R2 B F' D' U F2 D' R2 B' F U' F2 U'
4. 54.64 D2 L2 R' U2 B' F' R2 B' L R2 B L2 B2 U' L2 D B F' D2 U2 L D2 L R' D
5. 55.81 B' F L2 D2 U R D B F2 D' U2 L2 R D2 B2 D' L2 R2 D2 B2 F' U' B' R2 F2

Sorry for the long-winded explanation. I know I'm 3 years late with it and it isn't too big of a deal anymore. But I'm just incredibly happy about how it turned out (also this weekend of course ).