Weekly competition 2008-51

So.... ...exists.

Not only...quote]

I don't think you had to write so much. I believe that not only me consider your solution straigtforward and quite obvious. It just happened that we missed it and you did not. Then, you didn't see the shorter obvious finish. I remember that such thing happened to maybe each of us in the past. It's normal.
Let's be clear: I didn't accuse you of cheating. I recognise your skill in finding blocks, knowing premoves and other FMC-techniques (and getting lucky is indeed not a crime). The reason I called ******** is not because of the first part of your solve. It is was because someone with your skillset said this
I most likely would not have found that though, it is not a form of pair insertion that I am very familiar with

Hmm that was not clear, I guess we have different definitions of "calling ********." I saw it as basically "you say you can do all of this hard stuff, but you cant do this one easy thing. therefore, I think you cant do the hard stuff." A simple misunderstanding that got a bit out of hand.


The case you ended up with was basically this (I adjusted the cube-angle by a x' so the pair insertion is more obvious):
scramble: R' F R F'
And there are 3 obvious ways of inserting that pair and you really know (and use all 3 of those ways, just check your OLL's or even probably your Y-Perm)
1) U' F' U F (OLL and part of the most common Y-Perm)
2) U2 F' U2 F (another OLL)
3) F R' F R (edge-control and solves your cube)
But you choose this solution:
4) U' R U' B U B' R' :confused:

Again, I am not saying you couldn't have missed this one. I am just saying that the pair-insertion Guus and I mentioned is in your skillset.

R' F R F' (called the SLEDGEHAMMER!!!! on jason's site) is the case I used, but perhaps on a different pair than you and guus. I believe Mr Pochmann has found the solution to our problem.

Guys, try this :

1) Enter Vault's R B R' B' R B' D B D' R' into this with "reversed play".

2) Go to the start of the alg. Watch how it solves the F2L considering blue as the "first side". That looks perfectly reasonable.

3) Go to the start again and watch how it solves the F2L considering red as the "first side". Now it does look as surprisingly wasteful as Arnaud says.

4) Repeat with Arnaud's R B R' U R' U' R B' and see how for blue as first side it's a non-obvious but learnable algorithm. Perfectly matches Vault's reaction.

So I believe Vault simply considered the "wrong F2L" and therefore missed the shorter solution obvious when considering the "right F2L" like Arnaud. Vault, is that correct?

Now, what lessons can be learned from this?

indeed, going from the terms I put forth in my earlier explanation post, assuming we have just completed 3xcross:

scramble(with premove F this time): B2 R2 B' U2 F2 U2 L2 B' D2 L2 R' D' R B' L D2 B U F R' U'
solution so far: D2 F D' B' L' D' L2 R2 F' R2 D' F2

I was attempting to build F2L on L(orange), while your solution looks at F2L on F(green). Curiously enough, when I hold the cube with my f2l on left(like when I speedsolve), about to solve this case, the F2L you looked at is on the bottom! we were looking at the exact same thing, but seeing nothing the same! Now your solution is entirely obvious to me! If you consider solving the F2L on the L face, then my solution should become obvious as well.

Now, what lessons can be learned from this?

Don't get too excited about 23 moves and stop with 10 minutes left, there could still be something better. Also, Arnaud and I disagree on what calling ******** is.

And Arnaud, considering the circumstances I may have overreacted. But cheating is something that I take very seriously, so I'm sure you can see where I'm coming from.


Thank you Stefan. Even though you hate this time of year, you have found a Christmas Miracle! perhaps your heart has grown 3 sizes as well?
 
I am glad we got this sorted out.

...I saw it as basically "you say you can do all of this hard stuff, but you cant do this one easy thing. therefore, I think you cant do the hard stuff."

Almost correct. I meant it as "you say you can do all of this hard stuff, but you cant do this one easy thing. therefore, I think you can do this one easy thing"

Remember for next time: Arnaud is a friendly gullible fool
Also remember: Stefan liked Christmas this year

And finally: Obviously C (although D deserved a go)
so...... Stefan cheats and even admits it (but still loses by 12 moves)
a) He is such a big loser AND already feels bad because of Christmas. I'll let him get away with it
b) I ban him for 3 years
c) I congratulate him for this fun trick
d) I make him find a way to continue this start: B' D L' B R' F' D F R2 B' R' D2 (leaves a 5-cycle and a 3-cycle)
 
Now, what lessons can be learned from this?
Don't get too excited about 23 moves and stop with 10 minutes left, there could still be something better.
To be more concrete... being able to change perspective mid-solve. And I learned I need to learn about premoves. Also, we learned Arnaud is a spiteful meanie and Stefan is a friendly peacemaker (as if we didn't know that already).

And finally: Obviously C (although D deserved a go)
Yippie! And for the record, here's the solution before canceling and the scramble for comparison:

Scramble: (B2 R2 B' U2 F2 U2 L2 B' D2 L2 R' D' R B' L D2 B U F R' U')
Solution: (R L' F B' U D' L' R) (R F U' R' D' L2 B' D F' L F B2 L2 D B2 R2 U2 R2 D F2 D2) (D U' B F' L R' D U')

So yes, eight setup moves (actually four slice moves) to "diagonally rotate the cube", then the inverse of the scramble but rotated accordingly, then undo the setup. With setup and setdown done so they cancel/combine with the scramble. Maybe I could've saved another move by ending the setup with R', didn't bother trying as it was just for fun anyway.
 
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2x2x2: 8.36 9.27 11.22 6.38 10.55 = 9.39
3x3x3: 23.91 29.52 21.52 21.71 24.53 = 23.38
4x4x4: 1:27.15 1:34.59 1:41.55 1:37.34 1:28.16 = 1:33.36
5x5x5: 2:14.36 2:25.08 2:13.88 2:14.63 2:27.58 = 2:18.02
6x6x6: 5:18.18 4:46.58 5:19.86 4:49.41 5:21.44 = 5:09.15
7x7x7: 8:00.83 7:33.93 7:28.19 7:18.28 7:30.91 = 7:31.01
2x2x2_bf: 1:07.05 54.93 DNF = 54.93
3x3x3_bf: DNF 4:46.31 DNF = 4:46.31
3x3x3_oh: 51.96 45.25 44.03 43.84 59.31 = 47.08
3x3x3_match: 1:20.68 1:16.58 57:00 1:23.90 1:10.86 = 1:16.04
234-Relay: 2:45.84
2345-Relay: 4:33.31
23456-Relay: 9:39.71
234567-Relay: 17:41.24
Magic: 1.72 3.80 3.65 3.81 2.56 = 3.34
Master Magic: 5.25 4.93 6.22 4.33 4.56 = 4.91
Clock: 19.61 18.52 18.94 19.06 20.02 = 19.20
MegaMinx: 2:51.25 3:15.78 3:29.00 3:33.34 2:53.22 = 3:12.67
PyraMinx: 24.22 13.83 11.34 16.50 10.52 = 13.89
Square-1: 1:30.06 1:04.58 1:07.69 1:26.30 1:27.11 = 1:20.37
 
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