2x2 single WR at Trentin Open 2011

[AustinReed]

The delegate could always just get the inverse scramble.

That would do nothing if the scramble is L U L'

 

[PhillipEspinoza]

Nobody can accurately define what scramble is "easy".

Sure you can. Maybe not for MOST scrambles but there are "scrambles" that are uncontroversially easy.

If you get a cube state like that of R U' or just R for example, these would be considered easy, regardless of which method or whatever you use. The question is where is that line?

 

[Tim Major]

R' U R U' is faster (unless they're LH), why'd they both do left handed

 

[tx789]

It's a big jump .96 to .69. Which is .27. Which looking at .96 is pettry crazy

 

[Dene]

That would do nothing if the scramble is L U L'

But that scramble would be scrapped because it's too easy, duh.

 

[LarsN]

[19:59] <Faz> ,wca Kaserer

Lol, this is danish for "wca throws out" (the scramble)

 

[Lucas Garron]

I can recall 3. The 4 mover at Vincent's, Lucas Garron's and LSCO.

Note: My 1.06 was actually 5 moves.

 

[Branca]

Here's the 0.83, almost +2

 

[amostay2004]

R' U R U' is faster (unless they're LH), why'd they both do left handed

If you're talking about the solution to the WR, it's R' U R U, in which case I'd prefer myself to do y2 L' U L U because the AUF flows better

 

[CRO]

Sure you can. Maybe not for MOST scrambles but there are "scrambles" that are uncontroversially easy.

If you get a cube state like that of R U' or just R for example, these would be considered easy, regardless of which method or whatever you use. The question is where is that line?

Just an R is not a proper scramble, because the cube is already solved

 

[AustinReed]

But that scramble would be scrapped because it's too easy, duh.

Well, wasn't the scramble for this solve pretty easy? (R' U' F R' I think...)
That's pretty easy to know inversely.

 

[Kirjava]

Cool.

I hope another 3 or 4 move scramble crops up soon so we can have sub 0.5 single.

 

[pjk]

Not true at all. We throw out unfair scrambles. Otherwise, Rowe would have the WR with a 0.5 or something when U2 F2 showed up on the scramble sheet.

What is decided as an "unfair" scramble? That is grossly vague, especially when it looks like some obviously "unfair" scrambles aren't thrown out at other WCA competitions since "unfair" is so grey.

 

[antros]

Not true at all. We throw out unfair scrambles. Otherwise, Rowe would have the WR with a 0.5 or something when U2 F2 showed up on the scramble sheet.

4b) Puzzles must be scrambled using a computer-generated random scramble sequence or scrambled position, that must be kept secret for all but the scramblers.

if no one sees srambles before scramblers, how anyone can reject

 

[Bob]

It's funny you say that, because there was a 4 move scramble last weekend at LSCO (and he was also at that).

Liar.

R U2 F2 U' R = 5 moves

 

[Bob]

Is this really allowed?

Quite seriously, I think it is highly doubtful that a delegate or organizer sort out scrambles even when considering that they are easy. While they may not do like that in a different competition, such as the one in Italy, you will trick the competitors in the competion of the chance to beat the world record. Likewise, in such cases to sort out those scrambles that are difficult or purposely sort in those that are easy or difficult.
Such behavior again raises the question of how to increase security around the scrambles in competitions. The only safe way according to me is that you have a computer in place at the competiton that randomly selected the scrambles just before use, and no sorting will be done away!
Another option, if you absolutely do not want to short solutions in puzzles like 2x2 and Clock is that someone writes a scramble program that removes such scrambles, and that all then have to use this program.

To clarify:

U2 F2 stood out quite clearly as a scramble among four other scrambles at like 7 or 8 moves each. As a result, I emailed the scramble page to the WCA board and asked whether or not I should keep them. I was told to throw them out, so I threw them out. The delegate wasn't making the decision here--the board did.

 

[Tim Reynolds]

To clarify:

U2 F2 stood out quite clearly as a scramble among four other scrambles at like 7 or 8 moves each. As a result, I emailed the scramble page to the WCA board and asked whether or not I should keep them. I was told to throw them out, so I threw them out. The delegate wasn't making the decision here--the board did.

But not every delegate would email the board--for example, I don't even really look at the scrambles after I generate them so that I don't risk cheating. In my opinion the decision of what is a fair scramble should be done by the scramble program.

 

[RyanReese09]

Liar.

R U2 F2 U' R = 5 moves

Could have sworn Tim told me 4. I am a liar D:.

 

[ThomasJE]

There's a video with all 3 of the WR breaking solves.

 

[cubernya]

The world record was only beaten once, because the 0.69 was the first solve