The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.
The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.
"The more I practice, the luckier I get." — Gary Player
"The more I practice, the luckier I get." — Gary Player