![]() There is a snapshot button in the lower left corner to stop scanning so you can write down your answers. Sudoku Coach - Step-By-Step Solving Demonstration. HD mode - enables the highest resolution of the camera to improve the accuracy of OCR (Note: HD mode runs smoothly on the latest iPhones, older devices may lag, in this case please use SD resolution mode). Show possible numbers - possible filled-in numbers are shown in a blank grid like pencil marks (NOTE: only available when the solution mode is or ). Supports handwritten numbers - as long as they are written clearly.įocused view mode - scanned Sudoku board is enlarged to full screen size.Ĭlear view mode - the scanned Sudoku board is re-rendered with the numbers printed on a clear colored background. ![]() If the Sudoku board was solved correctly, a green bounding rectangle will be displayed, otherwise a red rectangle will be displayed, along with the grid with the error. Orange bounding rectangles indicate that the Sudoku board is unsolvable, and unsolvable grids are presented in flashing purple. Red bounding rectangles indicate that the Sudoku board is invalid (conflicting rows/columns/boxes), and invalid grids are presented with a red flash. A valid Sudoku board requires that the numbers in each row/column/box are unique.ĭifferent rectangles drawn on a recognized Sudoku board indicate the results of a checkĪ green bounded rectangle indicates that the Sudoku board is valid and can be solved. Then click on the cells where you want to place the selected digit. Quick Start Select a digit on the side of the grid first. Hint a grid - tells you which grid is best to solve on the next move (i.e., fill in the grid with the fewest possible numbers).Ĭhecks if the puzzle board is valid, can be solved and has a single solution, the result of which is displayed superimposed on the camera image. This free online Sudoku solver can solve any valid Sudoku puzzles with a smart option to show the rationale of each step - a good way to learn the solving techniques by examples. ![]() Solve a grid - Solve a random grid for you. However if you want to use the computer keyboard instead, such keyboard operations can only be performed when a cell is selected in 'Cell First' mode. Solve all grids - Solve the puzzle completely. Otherwise, enter a string of characters containing the values for each cells in the grid. If you want to get the solution of one of the sudokus of the site, enter its number, which you can find just above the grid. You can solve the puzzle completely, partially or solve a single cell using the buttons in the Solving section of the Features. This solver allows you to solve classic sudoku puzzles of size 9 by 9, like a human would, with a detailed step-by-step solution. Enter the numbers of the puzzle you want to solve in the grid. You can also pick a photo from the Photos album to solve.Ĭurrently supports 9x9 and 4x4 Sudoku boards. This solver offers a number of features to help you improve your solving skills and practice solving strategies. Also, error checks for invalid Sudoku boards are displayed on the camera image. This app identifies and solves Sudoku puzzles in real time and overlays the solution on the camera image.
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