I discovered this channel with the four digit magic square[0] When I first saw that video, I thought the same thing and just brushed it to the side. Later that

I discovered this channel with the four digit magic square[0] When I first saw that video, I thought the same thing and just brushed it to the side. Later that day, SO and I were bored so I figured I'd toss it on the TV. Immediately she wanted to solve it with me before he started to explain his solution. Now we do these together every so often and compare strategies. Sudoku can be a good partner exercise, too :) [0]: https://www.youtube.com/watch?v=hAyZ9K2EBF0 https://www.youtube.com/watch?v=hAyZ9K2EBF0