![]() The jigsaw puzzle doesn’t follow these standardizations. In the earlier versions, the cages or nonets are squares with equal blocks. The Jigsaw Sudoku is a little different from the standard Sudoku. For example, if the letters MRHAYECIN are used to complete the grid, the hidden word is MACHINERY. For instance, apart from completing the 9 × 9 grid with the same logic as other puzzle variations, a 9-letter word needs to be discovered and unraveled. Since letters allow for the creation of words, these puzzles may have hidden words. When letters replace numbers, it is a word or alphabet variation of the Sudoku. A smaller grid with apparent differences in images is easier to solve. If the images in the puzzle have slight variations, the level of difficulty increases. The experience is even more interesting since you have to focus on more details instead of numbers or colors. This version of the puzzle uses images as inputs. ![]() In the number variant, numbers 1, 2, 3, etc., are used, but with the colors. While the rules to solve the puzzle remain the same, the change is visually engaging and colorful. Let’s say blue represents one red represents two, green represents three, and so on. Here, the numbers on a grid are replaced with specific colors. The 4 × 4 and 6 × 6 are easier variations, while the 16 × 16 and 25 × 25 variations are a real challenge. ![]() Other different grid sizes also exist, including the 4 × 4, 6 × 6, 16 × 16, and 25 × 25. The 9 by 9 grid isn’t the only size for a Sudoku puzzle. Here’s a look at six different types of Sudoku puzzles. These puzzles use different configurations of colors, words, images, and cages, testing your logic much more than the standard 9 × 9 grid. However, many other versions of the typical puzzle you see in books and newspapers. When you ask someone what Sudoku is, the standard response is a 9 × 9 grid puzzle with a few existing numbers and blank cells. The first World Sudoku Championship was hosted in 2006 by Italy. The subsequent years saw Sudoku gaining popularity globally. The first U.S newspaper to publish the logic-based puzzle is The Conway Daily Sun. In 2004, the Times of London published Sudoku puzzles. He was enthusiastic about the puzzle and invested the next six years developing a computer program that helped produce Sudoku puzzles rapidly. The New Zealand judge, Wayne Gould, encountered Sudoku at a bookstore during his vacation to Tokyo in March 1997. Moreover, many people in Japan need to make long commutes by bus or train, and the best way to utilize their time is by solving puzzles. Therefore, the Japanese culture prefers number puzzles. The popularity of the puzzle in Japan is because the native language isn’t quite suitable for crossword puzzles. The term Sudoku, meaning one occurrence of every number, has been used since then. In 1984, the game appeared for the first time in Japan and was known as “Sudoku.” The name is the short form for the longer Japanese phrase – Sūji wa dokushin ni kagiru. They were named “Number Place” as there was a need to place different numbers into blank spaces on a 9 × 9 grid. His puzzles were published in Word Games and Dell Pencil Puzzles magazine in 1979. The modern version of the game is an invention of Howard Garns, an American puzzle inventor from Indiana, USA. The games initially appeared in French newspapers in 1895. Sudoku dates back to the Latin Squares, a Swiss mathematician’s game of the 18th century.
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