![]() Double Pairs: If two squares in a row, column, or region can only be two numbers (a pair), then eliminate these two numbers from other squares in that area.Look for Grid Symmetry: Often, the placement of numbers will be symmetric, which can provide clues for placing additional numbers.Subgrid to Grid: Solve numbers in a subgrid and use that information to solve for numbers in the larger grid.Elimination: Determine what numbers cannot be in a square and eliminate them as possibilities, making it easier to see what can be placed there.Single Possibility: If a square has only one possible number that can be placed there, fill it in.Unique Numbers: Every number from 1 to 16 must appear exactly once in each row, column, and 4x4 region.Objective: The goal is to fill the empty cells in such a way that each row, column, and region contains the numbers 1 through 16 without any repetition.Pre-filled Numbers: Some cells in the grid are pre-filled with numbers from 1 to 16.Grid Structure: The puzzle consists of a 16x16 grid, which is further divided into 4x4 subgrids or regions.Some of the squares already contain numbers, and the objective is to fill in the remaining squares. So you can learn the techniques and logic by numerous examples.Sudoku 16x16 is a variant of the classic Sudoku puzzle, but, as the name implies, it is played on a larger grid of 16x16 squares. If you launch our smart Sudoku solver by clicking this link: smart Sudoku solver, it will solve a random Sudoku puzzle of a chosen difficulty level from our database. It will bring up our smart Sudoku solver to solve your Sudoku puzzle step by step. You can use our online Sudoku solver to enter your own Sudoku puzzle and then click the "Step by Step Solution" button. Our smart Sudoku solver can solve any valid Sudoku puzzles step by step and explains the logic in detail for each step so that you can learn the Sudoku solving techniques by numerous examples. Learning Sudoku Solving Techniques by Examples The other option is to bring up our smart Sudoku solver to solve your puzzle step by step with explanations. ![]() One option is to give the solution of your puzzle instantly. Our online Sudoku solver offers two options to solve your Sudoku puzzles. Download puzzle + answers Mind Stretchers. If you haven’t done a printable sudoku puzzle in a while, start off with one of these. Want to play on our interface to solve a Sudoku puzzle you found from somewhere else? Just enter your puzzle on our online Sudoku blank grid, and you can utilize all our interface features to solve your Sudoku puzzle. Puzzle 1 Easy These first five puzzles are easy. Play Your Own Sudoku Puzzles with Our Interface So you can exercise your brain in a daily basis. Our Daily Sudoku page offers a new Sudoku puzzle for each difficulty level every day. You can use our interface to enter candidates in a cell, highlight a cell that you want to make a note, trace and retrace steps with undo/redo buttons, fill in candidates for all empty cells with one key, save an unfinished puzzle in the middle of the game, check mistakes or violations for your entries, and more (see the manual of our interface for all features). ![]() But our interface makes it more convenient for you to apply the logic and trace the steps. You still need to solve the puzzles with your own. The interface here has many features that can help you to solve the puzzles. ![]() Also the expert area provides extremely difficult Sudoku puzzles for those who are familiar with the most advanced Sudoku solving techniques. The chance that you play the same Sudoku puzzle is almost zero. Play Sudoku Onlineīillions of free Sudoku puzzles of varying difficulty levels are offered here online. The objective is to fill the 9x9 Sudoku grid with digits from 1 to 9 such that each of these 9 digits appears in each row, each column and each 3x3 block once and only once.
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