How do you randomly generate a Sudoku board?
Start with a complete, valid board (filled with 81 numbers). Make a list of all 81 cell positions and shuffle it randomly….One way to generate sudoku faster.
- find an exist sudoku.
- exchange the value with a random group.
- exchange the cell or the column or the row-grid or the column-grid.
How many filled Sudoku grids are there?
6,670,903,752,021,072,936,960
There are 6,670,903,752,021,072,936,960 possible solvable Sudoku grids that yield a unique result (that’s 6 sextillion, 670 quintillion, 903 quadrillion, 752 trillion, 21 billion, 72 million, 936 thousand, 960 in case you were wondering). That’s way more than the number of stars in the universe.
How do I make a Sudoku in Word?
Follow these steps.
- Decide on the word or phrase you want to use.
- Go to Create Personal Wordoku Puzzle.
- Fill in the phrase in the space provided.
- Choose the skill level of the puzzle you want to create.
- Click on the “Create Puzzle” button.
How many 9×9 Sudoku grids are there?
The number of Sudoku grids on a 9×9 board is 6,670,903,752,021,072,936,960. This number is given in Felgenhauer and Jarvis’ article Enumerating possible Sudoku grids.
How do I create a puzzle in Excel?
Put in your words:
- Click on a square (cell) in the first line. Click the B on the menu bar at the top.
- Type a name for your puzzle.
- Put on your Caps Lock from the keyboard. Starting two rows down, type intersecting words on the grid, 1 letter per cell. Use arrow keys to navigate to adjacent cells.
How do I insert a grid line in Word?
On the Drawing toolbar, click Draw. Click Grid. Check Display Gridlines….To enable Word’s gridlines in Word 2007/2010, do the following:
- Click the Page Layout tab.
- Click the Align dropdown in the Arrange group.
- Check View Gridlines. To disable gridlines, uncheck View Gridlines.
How do I insert a grid Table in Word?
Navigate to the Insert tab, then click the Table command. This will open a drop-down menu that contains a grid. Hover over the grid to select the number of columns and rows you want. Click the grid to confirm your selection, and a table will appear.
What is the best algorithm to solve Sudoku?
backtracking algorithm
The Algorithm One algorithm to solve Sudoku puzzles is the backtracking algorithm. Essentially, you keep trying numbers in empty spots until there aren’t any that are possible, then you backtrack and try different numbers in the previous slots.
How do you solve the hardest 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.