What makes some puzzles unsolvable?
Channel: Ryan Kennelly
Date: 2021-07-25

Description: 
In this video I discuss how to tell whether any of the WCA puzzles (Clock, Square-1, Skewb, 3x3, 4x4, 5x5, 6x6, and 7x7) are solvable from a scrambled state (in other words: all the parities of each WCA puzzle).  I discuss edge orientation, corner orientation, parity, and a bunch of random rules for Skewb. 


Links:
Skewb check chart: https://docs.google.com/spreadsheets/d/1Npyt92hEOmWYSqEFF5dKb4k6_2UyiOECii0kI5xdWrk/edit?usp=sharing

EO tutorial: https://youtu.be/iNSUBnWaRxo
Blindfolded tracing tutorial: https://youtu.be/ZZ41gWvltT8



Time Stamps: 
0:00 - Intro
0:20 - Square-1 
0:25 - Clock 
0:48 - 2x2 
2:15 - 3x3
5:48 - 4x4, 6x6, and even layered nxn's 
6:09 - 5x5, 7x7, and odd layered nxn's 
6:25 - Megaminx 
6:36 - Pyraminx 
7:33 - Skewb
11:03 - Outro


Music: 

Fluidscape Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 
License http://creativecommons.org/licenses/by/3.0