Sudoku - free online solver

Sudoku (数独 sūdoku) (English pronunciation: /suːˈdoʊkuː/) — is a logic-based, combinatorial 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 sub-grids that compose the grid (also called "boxes", "blocks", "regions", or "sub-squares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution. Completed puzzles are always a type of Latin square with an additional constraint on the contents of individual regions. Sudoku was popularized in 1986 by the Japanese puzzle company Nikoli, under the name Sudoku, meaning single number. It became an international hit in 2005. On this page, is proud to present to you the algorithm for solving the puzzle "Sudoku". To find solutions

1. enter raw data into the lattice of the field (also possible import),
2. click "Step" or "Decision"

Works completely in the browser client. No need to download anything and everything for free! Solves a simple Sudoku, and with diagonals. Keep in mind that a decision may take some time (from several seconds to 5 minutes on slower machines).