Rubik's Cube solution unlocked by memorising 3915 final move sequences

A speedcuber has combined two commonly used final moves into one to solve a Rubik's cube A Rubik's cube solver has become the first person to show proof of successfully combining the final two steps of solving the mechanical puzzle into one move. The feat required the memorisation of thousands of possible sequences for the final step. Most skilled speedcubers – people who compete to solve Rubik's cubes with the most speed and efficiency – choose to solve the final layer of the cube with two separate moves that involve 57 possible sequences for the penultimate step and 21 possible sequences for the final move. Combining those two separate actions into a single move requires a person to memorise 3915 possible sequences. These sequences were previously known to be possible, but nobody is reported to have successfully achieved this so-called "Full 1 Look Last Layer" (Full 1LLL) move until a speedcuber going by the online username "edmarter" shared a YouTube video demonstrating that accomplishment.