Knights of the Quick Silver
13:54
Parity Hexagons: A smooth Sudoku for a Monday morning
45:42
Vortex: Survive this vortex of a Sudoku
32:50
Solve Diabolical Sudoku Puzzles - Very Hard
32:20
This Amethyst based puzzle is a real gem!
25:48
The Miracle Sudoku
31:59
Pointers: Revisiting the Pointing Arrow #Sudoku Variant Rulset
9:31
Triplets (a.k.a Triples) and Hidden Triplets Explained - A Sudoku Strategy You MUST Know
1:33:01