Sudoku, Logic-Based Placement Puzzle, Best Buys! Hot Auctions!
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Sudoku, Logic-Based Placement Puzzle
Sudoko is a logic-based placement puzzle. The objective is to fill the 9x9 grid so that each column, each row, and each of the nine 3x3 boxes contains the digits 1 to 9. The puzzle setter provides a partially completed grid so that there is only one solution.
Completed Sudoku puzzles are a type of Latin square, with an additional constraint on the contents of individual regions. Leonhard Euler is sometimes cited as the source of the puzzle, based on his work with Latin squares.
The modern puzzle was invented by an American, Howard Garns, in 1979 and published by Dell Magazines under the name "Number Place". It became popular in Japan in 1986, when it was published by Nikoli and given the name Sudoku. It became an international hit in 2005.
Completed Sudoku puzzles are a type of Latin square, with an additional constraint on the contents of individual regions. Leonhard Euler is sometimes cited as the source of the puzzle, based on his work with Latin squares.
The modern puzzle was invented by an American, Howard Garns, in 1979 and published by Dell Magazines under the name "Number Place". It became popular in Japan in 1986, when it was published by Nikoli and given the name Sudoku. It became an international hit in 2005.
Variants
Sudoku, Logic-Based Placement Puzzle
Although the 9×9 grid with 3×3 regions is by far the most common, variations abound. Sample puzzles can be 4×4 grids with 2×2 regions; 5×5 grids with pentomino regions have been published under the name Logi-5; the World Puzzle Championship has featured a 6×6 grid with 2×3 regions and a 7×7 grid with six heptomino regions and a disjoint region. Larger grids are also possible. The Times offers a 12×12-grid Dodeka sudoku with 12 regions of 4×3 squares. Dell regularly publishes 16×16 Number Place Challenger puzzles (the 16×16 variant often uses 1 through G rather than the 0 through F used in hexadecimal). Nikoli offers 25×25 Sudoku the Giant behemoths.
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Sudoku, Logic-Based Placement Puzzle
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Sudoku, Logic-Based Placement Puzzle
Online Reviews
Sudoku, Logic-Based Placement Puzzle
- Sudoku Seasons Review
- When thinking of romance infused gaming for Valentine's Day, math-focused logic puzzle Sudoku isn't the first thing to spring to mind. Sure, it's fun and satisfyingly challenging but romantic? Not in the slightest. That doesn't stop Sudoku Seasons ...
- Books received this week
- I sometimes receive books in the mail, as review copies from publishers, as gifts from far-away friends and as my personal purchases. Because I am an unapologetic bibliophile and bookworm, and a science/nature book reviewer, I like to let people know ...
- A less than conventional book/movie review
- I even got my crossword/Sudoku loving husband, Paul, chuckling over the antics of the Evanovich characters while listening to book number seven, "Seven Up" while on a road trip. Who can resist getting to know the dysfunctional Plum family living in a ...
- Educational eReader Review: ECTACO jetBook K-12 Educational eBook System
- If English is more your thing, there is a phonetic language teacher, pictured dictionary, audio phrase book, 180 language dictionary, vocabulary builder, flash cards, crossword, spell it right, Sudoku, and flash cards so you can quiz yourself on ...
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Sudoku, Logic-Based Placement Puzzle
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More on the Tubes
Sudoku, Logic-Based Placement Puzzle
Sudoku Players on the Blogs
Sudoku, Logic-Based Placement Puzzle
- Kindle gets handwriting recognition from puzzle startup
- Puzzazz's "TouchWrite" technology debuted in "Sudoku Unbound Volume 3," a $2.99 e-book the company began selling today. Instead of using a keyboard on the device, players write the numbers and the game recognizes them. "This is the sort of technology ...
- Lightwood Games makes Sudoku a Party with unique online gameplay for iOS
- Featuring puzzles by Conceptis, Sudoku Party gives individual users a daily challenge at three different levels of difficulty, and also introduces a unique multi-player mode for online play. In Party Play, two players must work together to solve the ...
- I know, you can't help yourself, it's too easy
- The cases will be expedited, resolved and eyes can turn to the next situation without needing to have the concentration levels of an expert Sudoku player. Between the information blitz and inaction, the common man loses the plot.
- Game on: Foodies can get their fix with these brainteasers
- "It's like Sudoku, in a hands-on fun way," says Charlotte Fixler, communications manager at ThinkFun. "This is a game you'll want to keep out on your coffee table." Educational games like Chocolate Fix may just as well be kept on the kitchen table.
Sudoku in the News
Sudoku, Logic-Based Placement Puzzle
- Sudoku 2111 hard
- Fill the grid so that every row, every column and every 3x3 box contains the numbers 1 to 9. For a helping hand call our solutions line on 09068 338 228. Calls cost 60p per minute at all times. Service supplied by ATS.
- Startup develops handwriting recognition technology for Kindle Touch
- Puzzazz officials have shown off an example of the technology working on a Kindle while playing a game of Sudoku. Users can draw a number within a Sudoku box on the game board and it appears on the Kindle. Users also have a choice between drawing a ...
- Does playing chess prevent Alzheimer's?
- When I ask groups of seniors that question, some of the more common answers include games such as crossword puzzles, chess, or sudoku. Each one of these answers is right but also wrong, because simply playing games falls short of what we can do to ...
- Sudoku champs
- Manila, Philippines ? Three young girls topped the 6th Philippine Sudoku Super Challenge National Finals last January 28 at SM City North EDSA in Quezon City. Organized by SM Supermalls and the Mathematics Trainers Guild-Philippines (MTG), the Sudoku ...
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