![]() Examples: Saying that a 4 goes in "Q5-7" means a 4 is entered in the 7th Square in Quadrant 5 "R8" means Row 8 and "C2" means Column 2. Download 128 Medium Sudoku Stock Illustrations, Vectors & Clipart for FREE or amazingly low rates New users enjoy 60 OFF. En estos puzles, la lógica sigue siendo lo más importante, pero ahora será necesaria más atención y cuidado para alcanzar la solución final. So in this guide I will just use the Q (Quadrant), R (Row), or C (Column) abbreviations and numbers to show where numbers go. The goal of the medium Sudoku is to fill in the empty cells with missing digits, observing one basic rule there must be no repetition of the same digit in. Los Sudoku de nivel medio están pensados para jugadores de nivel intermedio y para principiantes que buscan otros desafíos cuando el nivel fácil ya no es un reto. These Sudoku instruction will not be as in-depth as the Easy Instructions, because you will use the same techniques of "Checking for 1 through 9" and "Checking for one missing number in each Row, Column, and Quadrant" as in the Easy Instructions. When you are ready to put your Sudoku skills to the test, print out some of the 100 free Sudoku puzzles on this site or play Sudoku free online. If you are a Sudoku beginner, please work through his Part 1 guide first, then return to this page and learn these more complex techniques. Ghosting, RC Counting, Tagging, and Line Checking are sometimes useful when solving Easy Sudoku puzzles, but you always need these tricks to solve Medium and Hard Sudoku puzzles. Part 3 shows more advanced use of these methods. He explains these methods while using them to solve a Medium Sudoku puzzle, and you can follow along. Now, in this next guide, Kevin introduces three powerful Sudoku tricks: "Ghosting", "RC Counting", "Tagging", and "Line Checking". Those techniques are 1) "Check Each Number 1 Through 9" and 2) "Check for One Missing Number in Each Row, Column, and Quadrant." Thus, you can eliminate the remaining candidates that share the cells with those numbers.In Part 1, Kevin explained two basic techniques you need to use when solving all Sudoku puzzles. If within the group you have two identical pairs whose digits are not candidates in any other cell of that group, then those cells will be their final position even if the solution is still unknown. ![]() Hidden pairs occur within a group and, once again, they are hidden because they share their cells with other candidates. ![]() This allows you to eliminate those candidates from any other possibility within that row or column. At this point, you can be certain of their overall position in the grid, even if you cannot yet tell the final position of each digit. When you have the same pair of candidates in a single row or column you have found a naked pair. With the pairs techniques, you can only eliminate candidates. It is called “hidden” because other candidates create noise making it harder to spot. In this case, you can have several candidates per cell, but one digit has only a single possibility within that row, column or group. 24/7 Sudokus Easy Sudoku puzzles are for all beginner sudoku players and those seasoned players looking for a quick and fun game. Hard and Medium level Sudoku often require certain tactics to solve them. ![]() Hidden singles follow the same logic but backward. Medium Sudoku is a logic puzzle which is harder than an easy one and requires certain tactics to solve it. In that case, you have found the solution for that cell, regardless if that digit is also a candidate for other blocks within the same row, column or group. You have a naked single when you find one block with one single possible candidate. In Sudoku jargon these are called naked single, hidden single, naked pair and hidden pair and they all require you to note down every single candidate for each cell in order to apply them. There are 4 main techniques to achieve this. They can be used to either find the solution for a cell or to eliminate candidates and remove unnecessary information from the grid. The techniques to solve medium Sudoku levels are all based on pencil notes. ![]() Sifting through the grid will no longer be enough and notes and tactics become more important. However, there will be less allocated digits at the start of the game, making it more challenging to find the correct position of the missing ones. The rules remain unchanged at this level as you still must fill the cells with numbers from 1 to 9 without any repetitions per column, row or group. Logic will still prevail to solve these puzzles, but you must work harder to reach your goal. Medium Sudoku Puzzles are ideal for intermediates or beginners who are craving for more after the easy levels stop being a challenge. ![]()
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