The summary is:
The speaker attempts to solve a 21x21 Rubik's cube in one sitting, using a different strategy from usual. He faces many challenges, such as counting pieces, fixing pops, and dealing with parity. He makes some mistakes and gets frustrated, but also tries to be positive and grateful. He finally solves the cube with a J-perm and feels relieved, but also curious about improving his time.
Here are the key facts extracted from the text:
1. The text is a transcript of a video where the speaker attempts to solve a 21 by 21 Rubik's cube.
2. The speaker uses a different strategy from usual, which involves solving the outer layers of the cube first and then working inwards.
3. The speaker faces several challenges and difficulties, such as counting pieces, finding bars, fixing pops and parities, and enduring physical pain and fatigue.
4. The speaker completes the cube in about seven hours, ending with a J-perm algorithm.
5. The speaker thanks Cameron for sending him the cube, but also wishes that Moyu never made it.