It can then be eliminated as a candidate to that cell. Testing the pairs on the grid shows that the 5 highlighted in red would be impossible in both cases. By connecting the cells containing it, it is easy to see that in this situation only the pairs in green or yellow could be possible. In this example, the number 5 forms the necessary pattern to apply the X-Wing strategy. The next step will be to test those sets on the grid and eliminate the digit from any cell that would become impossible in both situations. By making an X linking diagonally the two opposite extremities of this rectangle, the player finds only two possible sets of positions for that digit. The player can use this strategy when there is one candidate repeated in four cells that form a square or rectangle when mentally connected by row and column. It can also be applied in some intermediate levels, although its incidence is very low in these cases. The X-Wing method is one of the most basic advanced Sudoku strategies. Regardless, their application always demands high levels of concentration from the player as they work by deduction. Return to home and begin another trivia.Advanced Sudoku strategies are used in the hardest levels of these puzzles and they can either help to reduce candidates or to find the solution for a specific cell.Complete the quiz and feel the satisfaction!.You will be given points based on how quickly you answer the question correctly.You will only progress when you get the correct answer.Read the question and click on the answer you believe to be correct.Open the Trivia and begin answering the questions.Feel the satisfaction of completing the puzzle. Progress through the levels are you gain more confidence. From the top menu you can Check your answers.Select the cell you want to place the number in, and choose the number from the pen list or the pencil list.There are two options to enter your answers - either pen (which is on the left and looks like a fountain pen nib) or pencil (which is on the right and looks like a little pencil). Review the grid and see which number you want to place first.Open the Sudoku game at the level that you want to play at.Feel the satisfaction.Īccess the Sudoku and choose a level from Easy, Mild, Hard and Difficult based on your skill level.įor people new to Sudoku you can read tips on how to play External Link or read the Sudoku tips that will help you win External Link or you can try with the Easy level and select Hint to get a clue. Once you have solved it, the clock stops and a mystery word is shown.
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