Can a 4x4 substitute a 2x2 at a competition?

[Rentlix]

At WCA competitions, is using a 4x4x4 as a 2x2x2 allowed? I currently have no working 2x2x2 and the delivery time from where I ordered mine is up to 3 months due to the global postage being so overwhelmed by deliveries. If it comes to it, will I be able to use a 4x4x4 instead?

Also, does this work for using a 6x6x6 as a 3x3x3? MeMyselfAndPi's modified 6x6x6 turns very well as a 3x3x3, whereas I gave away my last good 3x3x3.

 

[PHPJaguar]

Someone will probably be willing to lend you a 2x2...

 

[masterofthebass]

Its not legal unless you bandage the cube so that it is. If you feel like destroying a 4x4 to make it a permanent 2x2, go ahead, but otherwise, its not legal.

 

[Toad]

3h) No modifications are allowed that enhance the basic concept of a puzzle. Some examples of enhancing the basic concept are: new moves are possible, normal moves are impossible, more pieces are visible, colours on the backside of the puzzle are visible, moves are done automatically, more or other solved states.

From WCA regs. about modifications but this sort of stretches to this example...?

Just borrow someone else's tbh

EDIT: Listen to Dan ^^

 

[4Chan]

Careful bandaging that 6x6 if you want to use it as a 3x3.

I've done that, you have to be accurate, because crooked pieces make the movement SUCK.

 

[iasimp1997]

Someone will probably be willing to lend you a 2x2...

What he said ^^^
Just get someone to lend you a LanLan or something.

 

[PeterV]

3h) No modifications are allowed that enhance the basic concept of a puzzle. Some examples of enhancing the basic concept are: new moves are possible, normal moves are impossible, more pieces are visible, colours on the backside of the puzzle are visible, moves are done automatically, more or other solved states.

From WCA regs. about modifications but this sort of stretches to this example...?

Just borrow someone else's tbh

EDIT: Listen to Dan ^^

+1.

Not to mention, could you imagine if everybody did this (used different ordered cubes for different events)? It would be chaos.

Also, from the WCA regulations:

3b) Puzzles must be in reasonable working order, so that normal scrambling is possible.

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

 

[miniGOINGS]

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

So then you could use a 4x4 as a 3x3 in a comp?

 

[nlCuber22]

Not to mention, could you imagine if everybody did this (used different ordered cubes for different events)? It would be chaos.

Also, from the WCA regulations:

3b) Puzzles must be in reasonable working order, so that normal scrambling is possible.

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

You would treat two layers as one layer, but it doesn't matter anyway because it's not legal.

 

[Novriil]

before Estonian Open my friend asked that.. and Petri Vanhala told me that he should lend it from someone.. an I think that if I'd be the main judge for that event I would not allow this.

 

[TioMario]

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

So then you could use a 4x4 as a 3x3 in a comp?

And a 7x7x7 as a 5x5x5... etc...

 

[PeterV]

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

So then you could use a 4x4 as a 3x3 in a comp?

And a 7x7x7 as a 5x5x5... etc...

I was only addressing using a 4x4 as a 2x2; didn't think of this.

I'm sure you couldn't use a 4x4 as a 3x3 in a competition, but I can't find anywhere in the regulations (except maybe 3h, quoted by randomtoad), that clearly defines that you can't.

Maybe I'm missing something, or maybe this needs to be more clearly defined within the regulations. Either way, I think to most people, the answer is obvious.

 

[Toad]

You cannot truly apply a 2x2 scramble to a 4x4 and get a legitimate scramble. You would need to change U to Uw, for example. Therefore, you need to use the same puzzle as per the event you are competing in.

So then you could use a 4x4 as a 3x3 in a comp?

And a 7x7x7 as a 5x5x5... etc...

I was only addressing using a 4x4 as a 2x2; didn't think of this.

I'm sure you couldn't use a 4x4 as a 3x3 in a competition, but I can't find anywhere in the regulations (except maybe 3h, quoted by randomtoad), that clearly defines that you can't.

Maybe I'm missing something, or maybe this needs to be more clearly defined within the regulations. Either way, I think to most people, the answer is obvious.

There's no maybe about it... On 4x4 you can do extra moves therefore it can't be used as a 3x3 (or 2x2).

 

[Thomas09]

You could place 2x2 on the 4x4, preventing movement of the outer layers if the stickers are big enough.

 

[Jake Gouldon]

You could place 2x2 on the 4x4, preventing movement of the outer layers if the stickers are big enough.

I have seen people do this, but they turn pretty crappy.

 

[TMOY]

There's no maybe about it... On 4x4 you can do extra moves therefore it can't be used as a 3x3 (or 2x2).

Well the problem is more complicated than that. If you scramble the 4^3 as a 2^3, solving it will always require to apply on the corners the moves which are necessary to solve a 2^3 and nothing else, inner slices are of no help at all and you have no way to use them at your advantage,. The problem is different with a 4^3 scrambled as a 3^3 because you can actually apply algs which are impossible on a 3^3, for example two PLL parity algs to get a H-perm.

 

[Thomas09]

You could place 2x2 on the 4x4, preventing movement of the outer layers if the stickers are big enough.

I have seen people do this, but they turn pretty crappy.

Oops, meant 2x2 stickers.