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?

Can a puzzle setter generate a Sudoku generator?

The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution. Our aim for this challenge is not to generate a Sudoku solver algorithm but instead to create an algorithm to be used by a puzzle setter to produce a well-posed Sudoku grid: a grid with a unique solution.

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.

What is the objective of the Sudoku puzzle?

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.

When to use logic to solve Sudoku puzzles?

At the beginning of the game, the 9×9 grid will have some of the squares filled in. Your job is to use logic to fill in the missing digits and complete the grid. Don’t forget, a move is incorrect if: Any row contains more than one of the same number from 1 to 9 Any column contains more than one of the same number from 1 to 9

What happens when you get half way through a Sudoku puzzle?

You may get half way through a puzzle before you realize that a mistake was made somewhere. Usually you will end up with two identical numbers in a row, column, or region. This breaks the Sudoku rules rendering an unsolvable puzzle. Let’s skip the guessing and learn to solve Sudoku by reason and logic.

What do you need to know about Setka?

Setka combines wordplay and logic. You solve clues on a theme to complete grids where letters do not repeat in a row or column. Every single letter in the grid is part of an answer. Unlike a crossword, you can complete the grid even if you don’t know some of the clues, since letters don’t repeat in any row/column.