![]() ![]() There are usually six or seven of them in a typical Killer Sudoku puzzle. These squares are called “numbers squares”. The first step is to identify all of the squares in the grid that contain at least one number.This rule can be used to solve any Killer Sudoku puzzle, regardless of its size or shape. The most popular method is the Multiple Square 45 Rule. There are a few different ways to solve this Sudoku variant puzzle. Image Source: Killer Sudoku solving techniques (Multiple Square 45 Rule) Combine these four digits into two different cells within your puzzle until only one digit remains.Start by selecting three numbers from your puzzle that add up to 2 and one number that adds up to 1.This means that 2 can only appear once in that column. ![]() For example, in the grid below, there are two 2s in the second column.
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