What is the objective of the Sudoku puzzle?

The objective of Sudoku is to fill a 9×9 grid made of squares (shown above circled in blue) so that each row, each column, and each full 9×9 square use the numbers 1-9. While solving the sudoku puzzle you can only use each number one time in the square, column, and row.

Which is the hardest version of Sudoku to play?

Expert level Sudoku. Hardest Sudoku puzzle is a game for experienced Sudoku players with a very high level of difficulty. This version of Sudoku is characterized by the fact that only a few numbers are shown in the Sudoku square, which consists of 9 small squares, where the cells are located 3×3.

How many possible 9×9 Sudoku grids are there?

Sudoku is one of the most popular puzzle games of all time. The goal of Sudoku is to fill a 9×9 grid with numbers so that each row, column and 3×3 section contain all of the digits between 1 and 9. As a logic puzzle, Sudoku is also an excellent brain game.

Which is harder magic squares or Sudoku squares?

Sudoku only focuses on the squares, rows, and columns in the grid. So, while the concepts are similar, they are not the exact same game. Some people claim Magic Squares are harder because of the added diagonal factor, while others claim Sudoku requires more concentration and logic.

A Sudoku game is number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called “boxes”, “blocks”, or “regions”) contain all of the digits from 1 to 9.

Is there an algorithm to create a Sudoku grid?

Your task is to design an algorithm used to create a Sudoku Grid. The generated Sudoku grid should have enough clues (numbers in cells) to be solvable resulting in a unique solution. Sudoku?

Which is the smallest number of starting clues in Sudoku?

Sudoku fanatics have long claimed that the smallest number of starting clues a Sudoku puzzle can contain is 17. There are effectively numerous examples of grids with 17 clues that have a unique solution but we have never found a well-posed grid with only 16 clues. This suggests that the minimum number of clues to provide in a grid is 17.

How do you solve the backtracking problem in Sudoku?

Like all other Backtracking problems, we can solve Sudoku by one by one assigning numbers to empty cells. Before assigning a number, we check whether it is safe to assign. We basically check that the same number is not present in the current row, current column and current 3X3 subgrid.