Connect 4: SOLVED!
![](https://i.ytimg.com/vi/MkX_2jhqXdo/mqdefault.jpg)
1:15:45
Sudoku Legend Runs Rings Around Simon
![](https://i.ytimg.com/vi/Ia2Qbr7WPPw/mqdefault.jpg)
56:46
This Might Be The Puzzle Of The Year (and it's only February...)
![](https://i.ytimg.com/vi/YdOXS_9_P4U/mqdefault.jpg)
28:33
Terence Tao on how we measure the cosmos | Distance ladder part 1
![](https://i.ytimg.com/vi/3NycM9lYdRI/mqdefault.jpg)
3:36:39
Música relajante de piano: hermosa música relajante para dormir y aliviar el estrés | "Our Journey"
![](https://i.ytimg.com/vi/XxA8TwUMLaU/mqdefault.jpg)
1:18:56
The Fog Sudoku Theorem
![](https://i.ytimg.com/vi/stpiBy6gWOA/mqdefault.jpg)
17:13
Un avance en el uso del cuadrado mágico - Numberphile
![](https://i.ytimg.com/vi/-Te7Q4Pi3IQ/mqdefault.jpg)
1:48:54
Only 7 People Have Solved This Sudoku!
![](https://i.ytimg.com/vi/v8F3ISG8ZHE/mqdefault.jpg)
56:11