45 empty cells
Odd-Even
48 empty cells
Diagonal
50 empty cells
Killer
58 empty cells
Expert
52 empty cells
Hard
45 empty cells
Medium
35 empty cells
Easy
45 empty cells
Odd-Even
48 empty cells
Diagonal
50 empty cells
Killer
58 empty cells
Expert
52 empty cells
Hard
45 empty cells
Medium
35 empty cells
Easy
45 empty cells
Odd-Even