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Hobbies Rubik's thread, Hello new here

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cleave
post Feb 20 2010, 07:47 PM

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Learning intuitive F2L is easy. There's only 3 basic cases to know. Of course you dont need to memorize any algorithms and totally rely on logic and common sense to execute F2L. But how fast can you do it? On average, slotting CE pairs on intuitive F2L will take around 12 to 13 turns. Optimized algorithms on the other hand can cut that down to half. And if you take the time to master other advanced F2L concepts like the empty slots, your execution time will be a lot faster. So, if you're looking for speed, do not overlook the importance of algorithms. wink.gif

As I said, learning F2L is easy. Mastering it is an entirely different story. The key to a fast F2L is not your TPS. You can have a high turn-per-second but if you pause in between pairs, your F2L wont be very impressive (unless you're Nakajima). A good F2L requires a good lookahead. This is where learning F2L algorithms pay its dividends, especially when you have it in your muscle memory. Instead of thinking how to slot the pair, you can just concentrate on looking for the next pair. In contrast to the intuitive method, where you need to reason on how you would actually slot the working pair, leaving a quite limited time to do a lookahead. And to get a good lookahead, you simply need to practice, practice, practice. biggrin.gif


wuwah
post Feb 20 2010, 08:33 PM

ai ai ai~
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QUOTE(power911 @ Jan 31 2010, 09:53 PM)
superglue?

or two part epoxy?

show some pics. I think I can help more if I can see
*
here's the centre cry.gif
» Click to show Spoiler - click again to hide... «


here's the white centre part cry.gif
» Click to show Spoiler - click again to hide... «


*sorry for bad image quality, just using camera phone..

any help is very appreciated sweat.gif
power911
post Feb 23 2010, 11:02 PM

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I think two part epoxy is better in this case

parts you'll need
-of course,two part epoxy
-some clamps that holds small objects
-cotton swab for cleaning

remove the broken piece first
then see how those pieces fits.
mix your two part epoxy and apply on the broken part and stick them together
you'll need some clamps to hold the broken pieces together while drying smile.gif
leave it to dry for a day or two even if it say 5 minutes only ( be sure to clean the excessive glue )

good luck on gluing and cleaning up smile.gif

This post has been edited by power911: Feb 23 2010, 11:04 PM
Enigmatic
post Feb 26 2010, 06:41 PM

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Dear all, may I know where they sell replacement rubiks stickers? smile.gif
superxboy
post Feb 26 2010, 06:47 PM

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QUOTE(Enigmatic @ Feb 26 2010, 06:41 PM)
Dear all, may I know where they sell replacement rubiks stickers? smile.gif
*
i just saw it at toy'R us
Rm4.90 for one set
chungdavi
post Feb 26 2010, 11:34 PM

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I'm looking for replacement stickers also, too bad it's for Square-1, which I don't think there's any shops around here would be selling it.......
eXPeri3nc3
post Feb 27 2010, 12:25 AM

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QUOTE(cleave @ Feb 20 2010, 02:55 AM)
Get your average down to 50s, then we talk F2L. wink.gif
*
I use intuitive F2L and still around 50secs to 1min. >.> How? @@
cleave
post Feb 27 2010, 06:08 AM

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QUOTE(eXPeri3nc3 @ Feb 27 2010, 12:25 AM)
I use intuitive F2L and still around 50secs to 1min. >.> How? @@
*
Practice. tongue.gif
May I ask how long have you been using intuitive F2L? And what was your average before you use F2L?
Without a clear breakdown of your time (cross, F2L, LL), I would speculate that your total F2L execution is roughly around 28-35s. This would imply that you are pausing too much when looking for CE pairs. So, you might need to work on that. If you havent done so, do the metronome technique for 2-weeks straight. That would help your flow tremendously.
eXPeri3nc3
post Feb 27 2010, 07:11 AM

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QUOTE(cleave @ Feb 27 2010, 06:08 AM)
Practice. tongue.gif
May I ask how long have you been using intuitive F2L? And what was your average before you use F2L?
Without a clear breakdown of your time (cross, F2L, LL), I would speculate that your total F2L execution is roughly around 28-35s. This would imply that you are pausing too much when looking for CE pairs. So, you might need to work on that. If you havent done so, do the metronome technique for 2-weeks straight. That would help your flow tremendously.
*
Let's see:

Cross + 1 slot / Heise method and cross - 10secs
F2L Intuitive - 35~40secs
OLL PLL beginners method - ~10secs.

Yeah it "should be around" 40secs max for my F2L, which is damn slow T___T

I just searched for the 'metronome technique'. Is it the one where you use a metronome and play? How many bpm you reckon?

I never knew about that method =D

Thanks.

-edit: Intuitive F2L about few months ady (almost a year), but last few months I kind of rarely touch my rubiks, been touching back again since the week before CNY-

p/s - The last time I talked to you like a year ago I avg 1min20secs XD

This post has been edited by eXPeri3nc3: Feb 27 2010, 07:12 AM
cleave
post Feb 27 2010, 11:14 AM

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Yup, that's the metronome method. Your X-cross around 10s is pretty good and the LL is you can do it 10s using beginner's method is quite impressive. Now we need to focus on your F2L to bring your time down. sweat.gif

Common pitfalls for F2L lag are these:-

1) Cube rotation - This is where you turn the whole cube looking for pairs or positioning the cube for slotting.
2) Pausing - This is where you pause to plan for your intuitive setup and slotting. This is the bane of intuitive F2L. Algorithm users wont suffer from this much as they usually can muscle memory the algorithms much faster than an intuitive users.

To minimize point #1, you need to learn how to slot from different angles. Dont do x, y, z rotations unnecessarily. It's ok to have one or two of those, but dont make it a habit. For point #2, the metronome method comes in handy. Set it to 60 BPM first which would translate to 1 turn per second. The trick is to train yourself to turn at a constant pace. If you miss a beat, scramble, do the cross and start over with F2L. At 1 tps would allow you to do an ample lookahead. You need to force yourself to look for next pair while slotting the current one. Once you're comfortable with 60BPM, you can gradually increase it to 75BPM, 90BPM and 120BPM. At 120BPM, you'll be turning 2tps. Let's say your intuitive would take 10 turns at average per pair. That would be like 40 turns for 4 slots. If you're turning at 2tps, it'll be around 20s for your F2L to complete. Your average solves should be around at sub-40s. For a sub-20s average, you'll need to cut down your F2L to 11s at most.

Getting sub-20s using intuitive F2L is very achievable. The question is how much practice are you willing to put in. biggrin.gif




eXPeri3nc3
post Mar 1 2010, 07:05 PM

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QUOTE(cleave @ Feb 27 2010, 11:14 AM)
Yup, that's the metronome method. Your X-cross around 10s is pretty good and the LL is you can do it 10s using beginner's method is quite impressive. Now we need to focus on your F2L to bring your time down.  sweat.gif

Common pitfalls for F2L lag are these:-

1) Cube rotation - This is where you turn the whole cube looking for pairs or positioning the cube for slotting.
2) Pausing - This is where you pause to plan for your intuitive setup and slotting. This is the bane of intuitive F2L. Algorithm users wont suffer from this much as they usually can muscle memory the algorithms much faster than an intuitive users.

To minimize point #1, you need to learn how to slot from different angles. Dont do x, y, z rotations unnecessarily. It's ok to have one or two of those, but dont make it a habit. For point #2, the metronome method comes in handy. Set it to 60 BPM first which would translate to 1 turn per second. The trick is to train yourself to turn at a constant pace. If you miss a beat, scramble, do the cross and start over with F2L. At 1 tps would allow you to do an ample lookahead. You need to force yourself to look for next pair while slotting the current one. Once you're comfortable with 60BPM, you can gradually increase it to 75BPM, 90BPM and 120BPM. At 120BPM, you'll be turning 2tps. Let's say your intuitive would take 10 turns at average per pair. That would be like 40 turns for 4 slots. If you're turning at 2tps, it'll be around 20s for your F2L to complete. Your average solves should be around at sub-40s. For a sub-20s average, you'll need to cut down your F2L to 11s at most.

Getting sub-20s using intuitive F2L is very achievable. The question is how much practice are you willing to put in.  biggrin.gif
*
Hello, thanks for replying. Just got back to KL yesterday and morning till just now got class so not able to reply.

Erm, my X-cross is only for 1 color... if swap color I'll slow down a lot. Not color natural. =(

Then the LL also got mix 2~3 non beginners method la. Haha. But for OLL only la (4 corners). PLL still using beginners'.

Will try the metronome. Thanks for the hint.
-kytz-
post Mar 2 2010, 08:51 PM

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QUOTE(eXPeri3nc3 @ Feb 27 2010, 07:11 AM)
Let's see:

Cross + 1 slot / Heise method and cross - 10secs
F2L Intuitive - 35~40secs
OLL PLL beginners method - ~10secs.

Yeah it "should be around" 40secs max for my F2L, which is damn slow T___T

I just searched for the 'metronome technique'. Is it the one where you use a metronome and play? How many bpm you reckon?

I never knew about that method =D

Thanks.

-edit: Intuitive F2L about few months ady (almost a year), but last few months I kind of rarely touch my rubiks, been touching back again since the week before CNY-

p/s - The last time I talked to you like a year ago I avg 1min20secs XD
*
I'm in the same boat as you

I started to learn the cube for a month and a half now-started around late Jan and have been practicing my F2L for around 3 weeks now.My average times are around 50seconds+(if i'm really lucky sweat.gif )

I'm also using normal cross,F2L and beginner method OLL and PLL...

I'm also having some difficulties finding the pairs...lining them up properly then inserting them which cost me a lot of time sad.gif Any tips here?

Oh btw....i'm also looking to learn OLL and PLL over here:

http://www.speedsolving.com/wiki/index.php/PLL
http://www.speedsolving.com/wiki/index.php/OLL

I don't quite understand the notations such as

r U R' U' M2 (U R U' R') U' M'
y F' (L' U' L U) (L' U' L U) (L' U' L U) F

What's the "r" and the bracket " ( ) " and the "y"?


cleave
post Mar 3 2010, 04:39 PM

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@-kytz-

r, u, b, l, d, f are 'wide turns'. Instead of turning a single layer like in R (L, F, B, D or U), you turn two layers. Sometimes, 'wide turns' are also written with capital letters followed by a 'w' (e.g Rw, Lw etc). You'll get to see a lot of algorithms with these type of turns once you learn higher degree cubes (4x4 and onwards). Wide turns are also known as 'double layer' turns.

The brackets are usually used to denote triggers. Triggers are combinations of algorithms that can be executed with finger tricks. People tend to optimize algorithms based on triggers so that it can be executed very quickly and it aids memorization. The second algorithm you listed is for solving an OLL using (L' U' L U) triggers which is normally for left-handed cubers. For right handed cubers, they tend to prefer a y F (R U R' U') (R U R' U') (R U R' U') F' to solve the same OLL. wink.gif

y, x and z are cube rotations. This is where your turn the whole cube according to the respective Cartesian axis. Imagine the 3D axis of x, y and z going through your cube (y-axis goes from top to bottom, x-axis going from right to left and z-axis is the axis that's coming towards you). a y would mean to turn the cube clockwise along the y axis. Yeah, it's a bit hard to explain in words and I'm too lazy to google for a good image. tongue.gif
Anyways, the current record holder for the Asian 4x4 and 5x5 blindfold once gave me this quote:-
QUOTE(masterchesterlian)
overthoroughness becomes confusion.

x = triple layer R
y = triple layer U
z = triple layer F
That helped me a lot to figure out which way a cube rotation goes. laugh.gif

@eXPeri3nc3
Dont go for color neutrality. In my opinion, that is only for the most gifted cubers (like the Australian kid who holds the current sub-10 world average. holy crap, he's fast). I know a lot of people that get disheartened and gave up cubing when they tried to be color neutral. unsure.gif
franklooi96
post Mar 4 2010, 09:23 PM

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QUOTE(eXPeri3nc3 @ Mar 1 2010, 07:05 PM)
Hello, thanks for replying. Just got back to KL yesterday and morning till just now got class so not able to reply.

Erm, my X-cross is only for 1 color... if swap color I'll slow down a lot. Not color natural. =(

Then the LL also got mix 2~3 non beginners method la. Haha. But for OLL only la (4 corners). PLL still using beginners'.

Will try the metronome. Thanks for the hint.
*
Woots? Kayak-king, you plays the cube too? icon_idea.gif

Yo cleave, I'm here. smile.gif


And for Square-1 stickers, I would suggest you buying from Cubesmith.

Cubesmith


Sub 20 avggggg, sweat.gif


Added on March 4, 2010, 10:53 pm
» Click to show Spoiler - click again to hide... «


Dang, almost!

This post has been edited by franklooi96: Mar 4 2010, 10:53 PM
cleave
post Mar 5 2010, 12:30 AM

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haiz...franklooi96 is here doh.gif
I forgot to lock the cage again. tongue.gif
eXPeri3nc3
post Mar 5 2010, 01:08 AM

It's coming! 3ɔu3ıɹǝdxǝ ♥
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QUOTE(cleave @ Mar 3 2010, 04:39 PM)
@-kytz-

r, u, b, l, d, f are 'wide turns'. Instead of turning a single layer like in R (L, F, B, D or U), you turn two layers. Sometimes, 'wide turns' are also written with capital letters followed by a 'w' (e.g Rw, Lw etc). You'll get to see a lot of algorithms with these type of turns once you learn higher degree cubes (4x4 and onwards). Wide turns are also known as 'double layer' turns.

The brackets are usually used to denote triggers. Triggers are combinations of algorithms that can be executed with finger tricks. People tend to optimize algorithms based on triggers so that it can be executed very quickly and it aids memorization. The second algorithm you listed is for solving an OLL using (L' U' L U) triggers which is normally for left-handed cubers. For right handed cubers, they tend to prefer a y F (R U R' U') (R U R' U') (R U R' U') F' to solve the same OLL. wink.gif

y, x and z are cube rotations. This is where your turn the whole cube according to the respective Cartesian axis. Imagine the 3D axis of x, y and z going through your cube (y-axis goes from top to bottom, x-axis going from right to left and z-axis is the axis that's coming towards you). a y would mean to turn the cube clockwise along the y axis. Yeah, it's a bit hard to explain in words and I'm too lazy to google for a good image. tongue.gif
Anyways, the current record holder for the Asian 4x4 and 5x5 blindfold once gave me this quote:-
QUOTE(masterchesterlian)
overthoroughness becomes confusion.

x = triple layer R
y = triple layer U
z = triple layer F
That helped me a lot to figure out which way a cube rotation goes. laugh.gif

@eXPeri3nc3
Dont go for color neutrality. In my opinion, that is only for the most gifted cubers (like the Australian kid who holds the current sub-10 world average. holy crap, he's fast). I know a lot of people that get disheartened and gave up cubing when they tried to be color neutral. unsure.gif
*
Crap I don't even know what is finger tricks and how to replace the algo for left or right handed cuber. sad.gif

that x y z notation you posted helped a lot. Lol. I'll take your advice and stick to 1 color for now.

QUOTE(franklooi96 @ Mar 4 2010, 09:23 PM)
Woots? Kayak-king, you plays the cube too?  icon_idea.gif

Yo cleave, I'm here. smile.gif
And for Square-1 stickers, I would suggest you buying from Cubesmith.

Cubesmith
Sub 20 avggggg,  sweat.gif


Added on March 4, 2010, 10:53 pm
» Click to show Spoiler - click again to hide... «


Dang, almost!
*
Yea I iz newbie in cube. Lol. Your times quite friggin fast rite? o-O!

You memorise all teh OLL and PLL algos?
franklooi96
post Mar 5 2010, 01:19 AM

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Nah, I am too lazy.


Cleave, you can't do that on me here, it's not going to be effective. tongue.gif
eXPeri3nc3
post Mar 5 2010, 01:24 AM

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QUOTE(franklooi96 @ Mar 5 2010, 01:19 AM)
Nah, I am too lazy.
Cleave, you can't do that on me here, it's not going to be effective. tongue.gif
*
Then what did you use?
franklooi96
post Mar 5 2010, 01:34 AM

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Cross -> Intuitive F2L -> 2+ look OLL -> 2 look PLL.

I'm learning PLL now, left N, G, R perm to go.
-kytz-
post Mar 5 2010, 02:15 AM

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QUOTE(franklooi96 @ Mar 5 2010, 01:19 AM)
Nah, I am too lazy.
Cleave, you can't do that on me here, it's not going to be effective. tongue.gif
*
What's your relationship with cleave? tongue.gif

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