![]() I’ve done the same, written software for the sheer fun of trying to solve a thorny problem. There are far, far fewer apps in the Linux world than either Windows or Mac, but the good news is that 99% of them are free and most are ad-free, written as a programming challenge or for fun. You can do a search to find other free online Sudoku games if you’d like, there are dozens of sites. The only digit that can fit in the light blue box in grid #2 is… can you see? It’s ‘1’. In this instance you can see that I’ve started solving the puzzle: The first two rows are solved. But one of the very first online puzzle sites does a good job presenting a simple-to-solve puzzle, particularly if you spend a moment or two to resize your browser window to just show the puzzle: : Some are so bad that it’s hard to find the puzzle in the ad overwhelm, which is not so fun. There are a lot of Web sites that offer online Sudoku puzzles, mostly as a way to show you a lot of ads. You can’t hide the timer, but you can ignore it if you, like me, prefer not to race the clock. Click on a spot, type in the digit, get feedback if it’s correct or not. The default Sudoku app is pretty rudimentary, but has a clean and attractive interface. A click to launch it and the puzzle presentation is very attractive: When I check on the second page of apps on my own stock Ubuntu system, I see these applications: It shows you all installed apps, and you can swipe left and right to see multiple pages of app icons if you have enough. DO YOU ALREADY HAVE SUDOKU?Īs a first step, click on the 3×3 dot grid icon in your Ubuntu Linux system. Apps that help you play the game can at least show if your guess is wrong (which paper and pencil cannot do) but then you might only have a limited number of wrong guesses before the puzzle is marked unsolved and you’re forced to move on to the next challenge. It’s deceptively simple because any given spot might allow more than one possibility, but then elsewhere in the puzzle you’ll be stuck if you have the wrong guess in the first instance. To solve a puzzle you must place the digits 1-9 such that in any given box, row, and column, no digit appears twice. You can even get a sudoku program that lets you play directly from the command line!įor those of you who don’t know, Sudoku is a math puzzle where a 9×9 grid is divided into 9 3×3 matrices. But Linux developers are nerdy so appealing puzzle games like Sudoku have indeed been implemented for Linux systems with a variety of interfaces. Even without that, it’s quite easy to open up a Web browser and go to a site that offers free online puzzles to solve. ‘Hanjie’ magazine features smaller puzzles that take less time to solve than the sumo-sized puzzles in ‘Super Hanjie’ which produce pictures with a great level of detail.Not only can you play the popular digit placement puzzle Sudoku on your Linux system, but it turns out that you might already have a Sudoku app on the computer, depending on distribution. The puzzles appear in two magazines with a devoted fan base, under the name Hanjie, an old Japanese word meaning 'judge picture'. Puzzler Media began publishing Nonogram in 1999. He came across the puzzle on a trip to Tokyo in 1994, began to create his own puzzles with the help of a friend, Igor Lerner, and set up a company to market them. The enduring popularity of this puzzle outside Japan is largely due to the persistence and enthusiasm of one man, Dave Green. In 1990, 'The Sunday Telegraph' published Non Ishida's puzzles under the name Nonograms (so named by the UK supplier James Dalgety, with a nod to Non Ishida). Puzzles filtered through to several Japanese titles. ![]() He called it Window Art.Īround the same time, a professional Japanese puzzler named Tetsuya Nishio invented a puzzle that worked on a similar principle, called Oekaki-Logic. By switching certain lights in skyscrapers on or off, he was able to create images on the buildings. A graphics editor called Non Ishida came up with a prize-winning idea to brighten the night-time cityscape of Tokyo. Nonogram is a picture-based logic puzzle that originated in Japan in the late 1980s.
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