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Just click & print.Ĭhoose your level and print your sudoku, you can create you own sudoku book up to 12 pages.ġ2 pages of easy sudokus, print the grids.ġ2 pages of medium sudokus, print the grids.ġ2 pages of hard sudokus, print the grids.ġ2 pages of diabolic sudokus, print the grids. Of course 'Undo' and 'Redo' can be helpful too - the icons are just right of the board.Īnd be sure to open the Settings page (using the gear icon) and try various error highlighting modes - that's the indispensable tool for getting the hand in quickly finding the right provides free sudokus. Just click the icon again to switch to placing big 'final' decisions (you can erase any of these too in case you change your mind). Access is free and unlimited, and all our grids Sudoku games online are one-way. The free 16x16 sudoku puzzles to play online are divided into 5 levels: easy, medium, difficult, expert and diabolical in order to continue your progress. Just click the 'note' icon - now every number you put in a cell will be a small note alongside other candidates. Play hard 16x16 super sudoku online for free. Just like in a paper Sudoku, you can make 'small pencil notes' in the cell of which numbers can go there. For trickier puzzles, click Options to turn on pencil marks. Archive Printable Blank Grids Members Forum Your Puzzles Tips Contact Us Sign In Join Timer 00:00:00 Start Pause Reset. After entering a number, check to see where else it has to go. Free 16x16 Puzzles - also called Hexadoku. Try adding numbers which already appear often in the Sudoku puzzle. No matter what trick you use the most helpful thing for solving a Sudoku is 'penciling the candidates'. Look for rows, columns and 3×3 boxes with just a few blanks remaining. Free 16x16 Puzzles - also called Hexadoku. Now draw a horizontal and vertical line from every 4 on the board (you remember you can't place another 4 in a row or column) - it will quickly become clear there are almost no cells left where you can actually put it. To solve the puzzle, you must fill in all the empty squares, without putting. At the beginning of the game, each cell contains a number between 0 and 9 or a letter between A and F or else is empty. Each problem is composed of sixteen 4 by 4 square regions, 16 horizontal lines and 16 vertical columns. Choose a number that occurs most on the board already (so there's one or two instances left to place) - there are indicators below the board to help you find the best one. An hexadoku puzzle is a sudoku grid of 16x16. The more advanced technique you can use for a harder puzzle called 'scanning': it exploits the fact that any given number from 1 to 9 can occur only nine times in a completed Sudoku puzzle. Now you will notice the more and more rows, columns and regions become almost complete and easy to deduce - the complete puzzle picture becomes clearer with each move. Now try to use the same technique but now with an almost filled-in row or column - find the one where only one number missing (then the answer is obvious) or two ones missing - try both options and figure out the right one. Which one is correct? Just place 3 and look across the whole row, then the column: is there a duplicate? Try the same with 7 and you'll get the correct option. For example, if a 3x3 square lacks just the numbers 3 and 7, we have only two options on how to place these two remaining numbers - 3 in a first cell and 7 in a second one or vice versa. You will certainly see a square where just one or two numbers are missing. Start a Sudoku puzzle on an Easy level to learn all the techniques quickly. Sounds like a tricky task? Just start scanning the board and you'll find all clues you need, one by one, and get the puzzle solved. So each number from 1 to 9 occurs only one time in each row, column and region. The 16x16 Sudokus for the last two months are in the 16x16 Sudoku Archive. You will find 6 16x16 Sudokus and on the last page the solution for the 16x16 Sudokus in this PDF document. Simply download and print the PDF document. Now you just need to fill the remaining cells with numbers from 1 to 9, obeying the only rule:Įach row, column or region must not contain repetitive numbers. Here you can get new 16x16 Sudokus daily with solutions. The more cells are pre-filled the easier the puzzle. You start a Sudoku puzzle with some cells already filled in with numbers. So each row, column or region contains nine cells. In each Sudoku puzzle you have a 9x9 grid, divided into nine 3x3 square regions (you can just look above to get an impression). DONATE FEEDBACK More Games Puzzles Solitaire Mahjong How to Play Sudoku
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