Can hard Sudoku be solved without guessing?

The short answer is yes. Every proper Sudoku puzzle can be solved without ever having to make a guess. Another way of thinking about it is that every Sudoku puzzle can be solved logically. Even though it may require highly complicated solving techniques you’re not familiar with.

Why is Sudoku so hard?

Sudoku puzzles are generally easier when they contain more information for the player, in other words when they contain more starting digits. That’s because this dramatically narrows the number of possible solutions. But reduce the number of starting digits and the puzzles become harder, taking more steps to complete.

Is there a point in Sudoku where you have to guess?

Sudoku does not require guessing. In fact, when solving Sudoku puzzles, you’re better off NOT guessing at all. Sudoku is a logic puzzle, using the power of simple deductive reasoning and process of elimination to fill in the gaps in the grid. Simply put – you don’t need luck to play Sudoku.

Is Sudoku actually hard?

Sudoku puzzles are generally classified as easy, medium or hard with puzzles having more starting clues generally but not always easier to solve.

How to solve tough Sudoku?

Method 1 Method 1 of 13: Use a pencil.

Method 2 Method 2 of 13: Note potential candidates in open squares.

Method 3 Method 3 of 13: Scan the board to process the puzzle.

Method 4 Method 4 of 13: Start with the obvious singles.

Method 5 Method 5 of 13: Revisit your candidates after you solve singles.

How to win at Sudoku?

Know the Rules. Knowing the rules is like a path in order to reach your destination.

Know the Terms. Knowing the rules is important but it is not enough.

Imaginary Lines This is actually one of the two ways I start solving puzzles.

Filling in the 3×3 boxes This is another way of solving the puzzle.

How to solve Sudoku puzzles?

The obvious way to solve a sudoku puzzle is to find the right numbers to go in the squares. However the best way to start is the other way round – finding the right squares to hold the numbers. This uses a technique called ‘crosshatching’, which only takes a couple of minutes to learn. It can solve many ‘easy’ rated puzzles on its own.