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Charles Sandfield
Charles Sandfield is the technician and content provider for Delta Software. He loves puzzle game, and always writes easy-to-read instructions to share them with beginners.
Articles by Charles Sandfield
Different Types of Popular Rubik's Cubes You Should Know
This guide introduces different types of Rubik's Cubes, and points out their information and traits.
20 Amazing Rubik's Cube Patterns You Must Try
This blog provides 20 amazing Rubik's Cube patterns, including how to create each of them, and with formula, you can also solve one.
How to Solve Rubik's Cube in 20 Steps?
This guide is about how to solve a Rubik's cube in 20 moves, providing specific steps and facts about solving cubes in 20 moves.
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