Best tricks to help you solving a Sudoku! www. internetsudoku.net FB: facebook.com/internetsudoku Twitter: Twitter.com/internetsudoku
Sudoku is a logic-based number placement puzzle with a grid containing nine large blocks. Each block is divided into nine cells. For solving Sudoku you don’t need to be an expert in maths, all you need is to apply a few simple tricks and techniques. Of course, no guess work, only observation with absolute accuracy and logic is required to win over the puzzle.
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Aspects of Sudoku Sudoku puzzles consist of partially filled row-column grid of cells. Every column, row and box should end up having all 1 to 9 numbers. Initial clues or numbers cannot be shifted.
Repetition of any number in a row, column and block is not allowed.
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Learn to solve Sudoku by logical reasoning: For those who are new to Sudoku, the puzzle can look like a complete riddle to them. So, finding a solution can be difficult without the appropriate technique. Sudoku puzzles are very well structured and to solve its systematic approach plus analytical thinking is needed.
Let’s start with basic techniques:
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Look for definite numbers: For solving a relatively easy puzzle, finding the definite numbers should be the first thing to look at. Definite numbers are those numbers which are definitely going to be there.
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Scanning method: The easiest way to start a Sudoku puzzle is to scan, eliminate the numbers and to search for the areas where only a single number can fit into a single block. Scanning method is a quick trick to solve easy puzzles and equally useful for hard puzzles up to the level where no further moves can be made.
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Process of elimination: Eliminate numbers from rows, columns and blocks. Search for missing numbers in rows and columns.
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Search for single candidates: It is understood that only one number can be in a square as the remaining numbers are already in use. This technique is very easy to see which candidates are possible within each cell.
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Go for slicing and dicing: Apply this trick for solving easy square blocks.
- Crosshatching technique: Crosshatching works in block squares. The most apparent way to solve the puzzle is to get the right numbers to fill the blocks. -
After solving a square block it is very important to check all the candidate lists in the same row, column and square in order to avoid repetition of numbers. Same way, whenever you have completed a candidate list, check the square blocks with respect to that list.
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Analytical and advance techniques: With the advancement in the level of difficulties in Sudoku puzzle, then the basic techniques are not sufficient to follow. For harder puzzles, deep logical reasoning and tricks are required.
Pencil-marking: It is a systematic approach to write down the small numbers inside the squares which may be suitable to fit in. X-wing technique: This method works when there is a formation of a rectangle by four numbers or cells in a grid. This will help you to exclude other existence of that number in either the column or row. Sword-fish: This is a trickiest technique; it is a complex version of x-wing. It is a 3 by 3 nine-cell pattern. Forcing chains: A cell contains certain numbers and they are the only possible alternatives, in this way certain candidates must be eliminated. Use naked pairs to eliminate squares in a block. Use naked pairs to eliminate squares in rows and columns. Use hidden pairs to eliminate squares in rows and columns.
Well, are you puzzled while playing Sudoku? Don’t be. Use these techniques and tricks to solve the most popular game Sudoku easily.
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