Sudoku.com offers free printable Sudoku puzzles of different difficulty levels to suit any skill level. Puzzles range from easy to evil, ensuring that both beginners and advanced players will find a challenge. Although both number puzzles share a lot of similarities, there’s also a major difference – amount of arithmetics involved.

Make sure the sum of numbers in each cage is equal to the number in the upper left corner of the cage. Sudoku is one of the most popular games to develop your intelligence. Supposedly, it was invented in 1970 by Dell's puzzler in New York, who published it in his journal “Mathematical Puzzles and Logical Problems”. The further development to web Sudoku was held in Japan, where the name of the game was invented. In 2004, Sudoku was first published in the “Times” as an online game.

Sudoku Rules

Regardless of your skill level, you can find and print a puzzle that will keep you engaged and entertained. You can also choose a more challenging level of printable Sudoku puzzles to master your skills and become a real expert! Sudoku Rules The goal of Sudoku is to fill the cells with numbers from 1 to 9. The numbers are placed in 9 squares, 3x3 each, thus, in each row, in each column and in each small square there are 9 cells. The same digit can be used only once in each separate column, each line and in each small square. The level of difficulty depends on how many digits are already indicated in the cells. If you open plenty of numbers - then you have very easy Sudoku. The advantages of easy web Sudoku Medium level printable Sudoku puzzles are slightly more challenging and require a bit more skill and strategy.

Whether you play online, use mobile applications, or prefer to print Sudoku, the rules of this classic game remain the same.

How to play beginner Sudoku puzzles?

In Killer Sudoku there’s a new concept of a “cage” – a group of cells within a dotted line that make up a sum shown as a small number above. Like in Sudoku, your ultimate goal is to fill the grid with numbers, while paying attention to ”the sum rule”. Let’s review Killer Sudoku rules in detail below. How to play Killer Sudoku Sudoku is a puzzle game that involves a 9x9 grid, which is divided into 3x3 sections. The goal is to fill the grid with the numbers 1–9, so that each row, column, and 3x3 section contains each number only once. Medium Sudoku is a logic puzzle which is harder than an easy one and requires certain tactics to solve it. Easy level printable Sudoku puzzles are perfect for beginners. They contain more numbers on the playing field than medium or hard levels to help you get started. Killer Sudoku is a fun twist on the classic sudoku for those of you seeking something new and challenging. It’s also known by such names as sumdoku, addoku and sumoku puzzle but in a nutshell it’s pretty much the same number puzzle. What’s the difference between Sudoku and Killer Sudoku?