Which of mouse ripple effect following snakes are hooded? Choose today’s easy puzzle, or another from our extensive archive. 1 to 9 in each square. Using your keyboard, you can type in up to eight practice numbers above the line at the top of each box.

Cross-hatching shows you have correctly completed a row, column or group of nine same-coloured squares. Often referred to as a Japanese number puzzle, in actual fact, Sudoku has a long history with ancient origins. It is thought that Latin Squares, known since medieval times, are the progenitors of the modern grid. American company Dell published the first contemporary Sudoku in 1979 under the name ‘Number Place’. Contrary to popular belief, you do not need to be good at maths to solve a Sudoku! The puzzles are based on the principles of logic and recent variants have been created which use systems of letters, shapes or colours instead of numbers.

You start the puzzle with several pre-determined numbers included as givens. These cells are marked and cannot be erased. Each time you start a new puzzle, a different set of numbers will appear. The object of the game is to fill the empty cells with the numbers 1 to 9, with each number only appearing once in each column, row and irregular coloured shape.

For each empty cell, you must determine which numbers can be inserted, according to the game rules. In the beginning you may have several options for each cell. As you fill out the different options for each cell, you will find that several cells have only one number option that could be correct, which you can then type inside the cell. Whenever you type in a correct number, you should update the practice numbers for the remaining cells. If you get stuck, you can use hints to help solve the puzzle. Click the HINT button once when you require a hint. Enter the characters you see below Sorry, we just need to make sure you’re not a robot.