The Perfect 6x6 Sudoku
1:24:57
The Sudoku You Cannot Use Sudoku To Solve!!
44:40
"The Best Puzzle I've Done This Year"
25:54
Thinking OUTSIDE THE BOX to beat reversed Poly Bridge 3 levels!
24:48
Can you solve this Cambridge Entrance Exam Question?
1:03:49
The Sudoku With Only 4 Lines
32:39
Big Table, No Client
26:51
New divisibility rule! (30,000 of them)
1:02:01