InNovember 2006, The Times introduced a new extreme level of Sudoku giving players a moredifficult level of logic: Super Fiendish. Fig. 3 is a partially solved Sudoku, using easy and medium difficulty solving techniques; no more squares can be solved using them. Look at the three highlighted cells in this puzzle, you can work out directly what they all are without To give you a good chance of spotting the swordfish you should enter all the pencil marks in the grid as shown here. Using the same logic in the last column, you can also eliminate the 7 as a possibility from all squares which are not in either highlighted row (Fig. 2).

Sudoku.com has some features that will help you with expert level Sudoku. An option that is especially useful at the beginning of the game is the ability to select a hint. The correction function is also very useful, since due to the high level of complexity, it is necessary to make corrections more often. Place digits from 1to9 in each empty cell. Every row, every column, and every 3x3 box should contain one of each digit. Even though evil sudoku is an extremely difficult game level, many experienced players find it the best way for brain training and developing mental skills. How to solve Sudoku Evil? For more free Sudoku every day, get the Sudoku Of The Day app for your phone or tablet, and do extra puzzles every day! More free Sudoku for you to play In this case, this particular number can be eliminated as a possibility for all other squares in those two columns.If you prefer to enter your own pencilmarks, up to six digits can be entered in each cell. You can add symbols too, such as question marks. Here we present the techniques that will help you solve the hardest puzzles using only logic and no guesswork.

This is an example of a 16x16 Sudoku. They are very similar to standard 9x9 Sudoku puzzles, but instead Essentially, this method uses the fact that in certain cases, there are only two possible ways of placing two numbers in four squares which form a rectangle.So, there are two possible ways of placing the 7; how does this help you solve anything? Well, you have established that the 7 for the first column must be in one of the two highlighted rows; not in any other squares in this column. of using the number 1-9, we use the numbers 1-9, and also the letters A, B, C, D, E, F, and G. Each row, Extreme Sudoku posts five new puzzles every day. Each puzzle has a unique solution and can be solved with pure logic. Lots of it. Guessing is never required - but it may help!

The basic rule is that each digit can appear only once in each row, column, and small square. Complete all the numbers to win sudoku. Pros of solving expert puzzles onlinePlease be reassured that all Sudoku puzzles published in the Times are always solvable by logical means. It is a fact that you cannot place the 7 in the first column square of both the highlighted rows at the same time. You can use all of the same techniques that you would use on a standard 9x9 Sudoku, but it is a bigger

This hardest Sudoku puzzle is characterized by the fact that only a few numbers are shown in the Sudoku square, which consists of 9 small squares, where the cells are located 3x3. Sudoku RulesFiendish Sudoku posts five new puzzles every day. Each puzzle has a unique solution and can be solved with pure logic, no guessing required. With many advanced techniques, the key is to spot patterns within your pencil marks to eliminate possibilities within other squares. If lines are drawn along the rows and columns, connecting the squares involved, they can form two rectangles, connected at the corners.