The Professor's Cube is a 5x5x5 verion of the original Rubik's Cube. The first version of this puzzle was invented in 1986 by Udo Krell, who took a 3x3x3 cube and expanded it.

As with the Rubik's Revenge (4x4x4), the most common algorithm for solving this 5x5x5 cube is called the "reduction" method. Focusing on solving the 3x3 center pieces and 3x1 edge pieces first - thus "reducing" the problem to a 3x3x3 puzzle, which can be solved using a regular Rubik's cube solving algorithm. This puzzle has only one parity case.

This puzzle has many moving parts thus allowing a huge number of possible permutations. The number of possible permutations of the 5x5x5 Cube is just under 2.83x10^{74}. The Current world record for solving it is 34.92 seconds, and it was set by Max Park from the USA at the Houston Winter 2020 competition.

Comments 24

Christopher

After about a week of practicing, I can solve it in 00:05:07.55!

Christopher

I'm receiving my 5x5 on December 22, 2021, WHICH IS TODAY!!!!! At first, it would probably be very hard, at an hour of solving. The world record is only 00:00:34.92!

kubers

the biggest I have is a 21x21. I can solve all the rubiks

theanfaceman

this Rubik box made my brain go smokey grilled chicken

Peter

I just can solve 1 side

CLEBER

Such an awesome cube!

mini fantastic cuber man

I could solve 3x3 4x4 5x5 and ect all because of grubiks

luis chaparro

Now, I can solve the 2x2-7x7, and the 9x9 lol

Irving de Noronha

This is the MOST OPTIMIZED SOLVER EVERRRRRRRRRRRRRRR

Rubik speed

That’s is a really hard rubik. But finally I can solve it under 20 minutes

Master cuber

I have one and i can solve it, the biggest one i have is 11x11

Some guy

It was a nice challenge, I have done a 4x4 before but I don't have my own 5x5, I ran into an unfamiliar case along the way and also messed up an algorithm but I was still able to do it with my knowledge of the 4x4. You should still look up a tutorial specifically for the 5x5 though.

Speedcuber

I'm learning the 5x5 now, and this is very helpful!!!👍

NerdyNoob

for those of you who are struggling: learn the 4x4 first. I found myself able to solve this after learning 4x4!

Nick

With the 2x2 solver I can use it to solve a 2x2 cube in real life! This app is amazing.

Luis

I know how to solve a 2x2 3x3 4x4 5x5 6x6 and even 7x7s.

mason

this is so cool ive tried like all of the Rubik cubes i love doing checkers

elizapeel

lt's so hard

Luis

My record is 8 minutes and 0.27 seconds.

Luis

I know how to solve it. :)

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## Christopher

After about a week of practicing, I can solve it in 00:05:07.55!## Christopher

I'm receiving my 5x5 on December 22, 2021, WHICH IS TODAY!!!!! At first, it would probably be very hard, at an hour of solving. The world record is only 00:00:34.92!## kubers

the biggest I have is a 21x21. I can solve all the rubiks## theanfaceman

this Rubik box made my brain go smokey grilled chicken## Peter

I just can solve 1 side## CLEBER

Such an awesome cube!## mini fantastic cuber man

I could solve 3x3 4x4 5x5 and ect all because of grubiks## luis chaparro

Now, I can solve the 2x2-7x7, and the 9x9 lol## Irving de Noronha

This is the MOST OPTIMIZED SOLVER EVERRRRRRRRRRRRRRR## Rubik speed

That’s is a really hard rubik. But finally I can solve it under 20 minutes## Master cuber

I have one and i can solve it, the biggest one i have is 11x11## Some guy

It was a nice challenge, I have done a 4x4 before but I don't have my own 5x5, I ran into an unfamiliar case along the way and also messed up an algorithm but I was still able to do it with my knowledge of the 4x4. You should still look up a tutorial specifically for the 5x5 though.## Speedcuber

I'm learning the 5x5 now, and this is very helpful!!!👍## NerdyNoob

for those of you who are struggling: learn the 4x4 first. I found myself able to solve this after learning 4x4!## Nick

With the 2x2 solver I can use it to solve a 2x2 cube in real life! This app is amazing.## Luis

I know how to solve a 2x2 3x3 4x4 5x5 6x6 and even 7x7s.## mason

this is so cool ive tried like all of the Rubik cubes i love doing checkers## elizapeel

lt's so hard## Luis

My record is 8 minutes and 0.27 seconds.## Luis

I know how to solve it. :)## Write a comment!