Tool/solver to solve irregular 7x7 Sudoku puzzles, using a 7x7 grid with irregular blocks. The rules for rows and columns remain unchanged.
7x7 Sudoku Solver - dCode
Tag(s) : Number Games
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7x7 Sudoku Solver
Solve a 7x7 irregular sudoku grid
Answers to Questions (FAQ)
What is a 7x7 Sudoku? (Definition)
A 7x7 Sudoku is similar to a classic 9x9 Sudoku, but the difference lies in the shape of the blocks, which are irregular (jigsaw-puzzle-shaped) and whose arrangement depends on the grid. Each block contains seven cells and forms a jigsaw-shaped region within the grid.
How to solve a 7x7 Sudoku grid?
Solving a 7x7 Sudoku uses the same deduction steps as solving a classic Sudoku, but with only 7 digits (or 7 distinct characters).
On dCode, solving the puzzle involves entering the contents of the cells (letters or digits only). NB: 49 characters can be copied and pasted, using a space for each empty cell.
To define the 7-cell blocks, click one of the predefined examples below the grid or define the blocks manually by marking their outlines.
Example: The content 1 2 5 3 4 6 7 can be pasted into the first cell to obtain
| 1 | ␣ | ␣ | ␣ | ␣ | ␣ | ␣ |
| ␣ | ␣ | 2 | ␣ | ␣ | ␣ | ␣ |
| ␣ | ␣ | ␣ | ␣ | ␣ | 5 | ␣ |
| ␣ | 3 | ␣ | 4 | ␣ | ␣ | ␣ |
| ␣ | ␣ | ␣ | ␣ | ␣ | ␣ | ␣ |
| ␣ | ␣ | ␣ | ␣ | 6 | ␣ | ␣ |
| ␣ | ␣ | ␣ | ␣ | ␣ | ␣ | 7 |
How does step-by-step solving work?
The program solves the 7x7 Sudokus by simulating a player's deduction steps and displaying each step of the solution with an explanation.
Source code
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