Not entirely sure if you need to select single-player and whichever difficulty since there isn't anything mentioned in the rules, but that's what I did. Also, assuming timing starts when selecting the difficulty, while timing ends when the "SOLVED" message appears on screen.

Time starts at 7.633 and ends at 60.033 at 60 fps to get a final time of 0h 0m 52s 400ms. Retimed using yt-frame-timer

Mod Note: Retimed (Start Frame: 667, End Frame: 3463, FPS: 60, Total Time: 0:46.600)