Can you solve Sudoku without trial and error?

The immediate answer is no. Any valid Sudoku can be solved without guessing, just by exhaustively trying all possibilities. However, there are two interesting variant interpretations of the question: Are there Sudoku puzzles that can’t be solved logically?

Is trial and error allowed in Sudoku?

The analogy with Sudoku is strong as ‘trial and error’ is using very much the same idea. When navigating through mazes an experienced human can make educated guesses on the most promising path rather than slavishly trying each option in turn.

Can Sudoku always be solved without guessing?

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.

Can you solve a Sudoku puzzle by trial and error?

Call it what you will back-tracking, guessing, labyrinth or trial and error, Sudoku players are split as to whether this is a valid technique to use to solve a puzzle. The strategy is simplicity itself and can be used on its own to solve every Sudoku puzzle.

How are sudoku puzzles solvable by logical deductions?

All Sudoku puzzles are solvable only through logical deductions, with no guessing. Some hard Sudoku puzzles may require deductive techniques that you don’t know. Some very hard Sudoku puzzles may require techniques that are so complicated that no human can do them without taking extensive notes.

Is there a free trial for sudoku Dragon?

F or generation and solution of Sudoku puzzles download and install Sudoku Dragon. It is the complete Sudoku package, including hints, guides, and many new puzzle types. Download our Sudoku puzzle solver for a free 23 day trial.

Can a pattern of numbers in Sudoku require something?

A pattern of numbers in a sudoku cannot “require” anything. Rather, someone — or a machine solving a puzzle, the same — might require something. The requirement does not exist in the object itself. The ontological error of projecting our own reactions or needs onto objects is common.