What is Sudoku sheet?
All of the sudoku puzzles are 9×9 grids. To solve them you have to fill in the empty cells. Each column, row, and region must contain the numbers 1 to 9 exactly once.
Does Sudoku help with dementia?
“Although playing ‘brain games’ such as Sudoku may not prevent dementia, is has been shown that regularly challenging yourself mentally seems to build up the brain’s ability to cope with disease.”
What is 16×16 Sudoku?
Hexadecimal Sudokus (also known as 16×16 Sudoku) are a larger version of regular Sudoku that feature a 16 x 16 grid, and 16 hexadecimal digits. Each row, column and 4×4 block contains all the digits 0 thru F (or numbers from 1 to 16, in the decimal versions).
How do you solve a 4 star Sudoku puzzle?
How to Solve Hard Sudoku Puzzles
- 1 Use a pencil.
- 2 Note potential candidates in open squares.
- 3 Scan the board to process the puzzle.
- 4 Start with the obvious singles.
- 5 Revisit your candidates after you solve singles.
- 6 Identify naked or hidden pairs.
- 7 Move on to triples and quads.