CFOP Superman’s clairvoyance (Wrongly painted face of edge guessing)

[Tito_H]

One day, I was busy making hand-made Rubik’s cubes to my friends as a Christmas present.

Fortunately, Superman’s grandson was helping me. I had bought many no-color cube kits. I assembled cubes and he painted them by his eye’s laser beam which could make the cubes with 2, 3, or 6 colors, and wrapped them with ribbon.

At some point, he started to get bored with simple tasks, and thought he'd tease me a little.

He said, “Gosh! It seems I painted one face of one edge piece with a wrong color. I am sure I painted the followings correctly:

• Yellow color
• The Yellow-Red edge

I’ve just finished Cross and the first F2L (BL & BLD). Can you guess which face of which edge piece is wrongly painted and what color should be?”

(Image)

(Source: https://ruwix.com/online-rubiks-cube-solver-program/)

Can you answer to the question of the Superman’s grandson?

[Conditions added on 29-Nov-2025]
1. If you color the wrongly painted face correctly, the cube becomes solvable."
2. Yellow color for all 4 faces of the edges is painted correctly.

 

[bcube]

Can you guess which face of which edge piece is wrongly painted and what color should be?”

Yes (although with my solution the RF edge would need to be flipped in order to have solvable cube).

 

[Martyt7777]

Yes

What’s the answer

 

[Tito_H]

Yes (although with my solution the RF edge would need to be flipped in order to have solvable cube).

Let me check if there is something wrong and will reply later.

 

[bcube]

What’s the answer

Change LF from something-blue to something-orange.

 

[Tito_H]

I asked Superman's grandson if bcube’s guessing was correct.

He replied, "That's not what I did. However, I can't say that the solution is wrong because I didn't include solvability as a condition in the beginning. In fact, if I color the face I colored wrongly correctly, the cube becomes solvable."

So, let's add a condition to this quiz: "If you color it correctly, the cube becomes solvable."

Can you guess this riddle?

 

[bcube]

Change UR from yellow-blue to orange-blue.

 

[Tito_H]

I asked him again if your guessing was correct.

He replied, "That's not what I did, either.
As I said, I am sure I painted the followings correctly:

• Yellow color
• The Yellow-Red edge

You should not repaint on Yellow color.”

Another guess, please.

 

[bcube]

Change UF from green-red to green-yellow.

 

[Tito_H]

I asked him again if your guessing was correct.

He replied, "Amazing, bcube has really clairvoyance! But…, that's not what I did.
I think my poor English has mislead him, but when I said that I had painted the followings correctly, I meant that I had painted Yellow color for all 4 faces of the edges correctly.

• Yellow color
• The Yellow-Red edge

I hope he forgives me.”

I hope you're still not tired and can keep guessing

 

[bcube]

Change RF from blue-red to blue-orange.

 

[Tito_H]

I asked him again, and he replied, “Wonderful! That's correct and what I did.”

Thanks, bcube, for your patience.
I will revise my original post to be more accurate in conditions.

 

[Tito_H]

Change RF from blue-red to blue-orange.

Superman came over to my house yesterday. I told him about how I'd made a bunch of cubes for Christmas presents with his grandson and how his grandson had given me some tricks.

Superman laughed and said, "Thanks for playing with my grandson. He's got a naughty side." He continued, "By the way, can you show me the cube your grandson miscolored?" I replied, "Sure," and handed him the cube.

He started spinning the cube at an incredible speed (I'm not sure if it was 100 TPS or 1,000 TPS). He then said, "Regarding my grandson's miscolored edge, I've found another one that meets the conditions."

What!?
After exploring various possibilities with Mr. bcube, we finally found this correct answer, but does Superman see another solution?

I've looked into it, but I can't find it. Which edge and which face is it?

 

[Tito_H]

I told Superman that no one seemed to have the answer, and he told it to me.

The solution Superman found was to change DF from Blue-White to Blue-Orange.



The moment Superman's grandson said, "I've just finished Cross and the first F2L," it hit a blind spot that would lead to the preconceived notion that 'the edges of the Cross are painted correctly.'

I'm truly impressed.