Puzzle Brain Help

Sudoku Rules

Playing Sudoku is a delightful challenge that requires logical thinking and attention to detail. To begin, you're presented with a 9x9 grid divided into nine 3x3 boxes. Your objective is to fill the grid with numbers from 1 to 9, ensuring that each row, column, and box contains every digit exactly once.

To play Sudoku, start by analyzing the initial numbers provided in the grid, known as "givens." Identify any numbers missing from a row, column, or box and systematically deduce where they should be placed. Use the process of elimination and logical reasoning to determine the correct placement of numbers. Be careful not to have the same number appearing twice in the same row, column, or box. Keep progressing through the puzzle, strategically placing numbers until the entire grid is filled. With persistence and practice, you'll soon unlock the solution and experience the satisfaction of completing a Sudoku puzzle.

Techniques

Here are a few common techniques used in Sudoku:

• Crosshatching: This technique involves scanning rows and columns to find missing numbers. Examine each row and column, marking the possible locations for a specific number based on the existing numbers in that row or column. By eliminating options, you can deduce the correct placement for a number.
• Box/Region Analysis: Each Sudoku grid is divided into nine 3x3 boxes. Box analysis involves focusing on one box at a time and identifying missing numbers. By examining the numbers within a box, you can determine where a specific number should be placed.
• "Naked Singles" and "Hidden Singles": A "naked single" refers to a cell that has only one possible number remaining based on the numbers already filled in its row, column, and box. Similarly, a "hidden single" refers to a number that appears only once as a possibility in a row, column, or box. Identifying and placing these single numbers can help you make progress in the puzzle.
• "Locked Candidates": This technique involves identifying a number that is confined to a particular row or column within a box. By determining which cells in that row or column can contain that number, you can eliminate it as a possibility in other cells within the same box.

These techniques are just a starting point, and as you progress, you may encounter more advanced strategies. Remember, Sudoku puzzles require a combination of observation, logical deduction, and patience. Enjoy the process of unraveling the puzzle and discovering the hidden patterns!

How to play sudoku on Puzzle Brain

To play Sudoku on Puzzle Brain, begin by selecting a number from the tray below the grid. Next, click on an editable cell in the grid where you want to place the selected number. The chosen number will replace the existing digit in that cell, or it will be deleted if the cell already contained that number.

If you enable the pencil button, you can use pencil marks as aids. After selecting a number and clicking on a cell, the corresponding pencil marks will appear in the corners or centers of the cell. These marks are solely for your reference and do not count towards your score.

To clear a cell, activate the eraser tool and click on the cell where you want to remove a guess.

The timer will automatically start when you click anywhere on the puzzle. Once you have filled the entire grid, click the "Check Result" button to verify if you have successfully completed the puzzle.

If you want to save your progress and continue later, you can save one game at a time. However, please note that saving a new game will overwrite any existing saved games. Also, games are saved locally and will not be made available accross devices.

To resume where you left off, simply use the "Load" button to load the last saved game. Enjoy your Sudoku-solving experience on Puzzle Brain!