sudoku

Colorful Flash-based 4x4, 6x6 and 9x9 Sudoku games. Includes easy, medium and hard levels. Also suitable for kids and Sudoku beginners!

Review of the best new sudoku apps for the iphone.

Quoted: Sudoku fan? Overwhelmed by the 19 (and counting) versions on the App Store? Dan Frakes has taken them all for a ride and picked out the cream of the crop.

I finally got around to posting a sample Whodoku puzzle. Enjoy!

Quoted: Whodoku - Sudoku with Personality by Roy Leban. Famous names and intriguing riddles add spice to these popular sudoku puzzles. Sterling book by Roy Leban. Similar to Wordoku and Letter Sudoku.

Diamond Game Mine Popcap Agent 47

Mike was asking how many essentially different sudoku grids there are. Here's the answer...

My first puzzle book just came out.

Read my blog post on thistangent.com for some more information.

Quoted: Who knew that sudoku could have so much personality? They can—when famous names and intriguing riddles add spice to these popular puzzles. Here’s how it goes: on top of the page is a fun, partially completed clue about an unnamed person; for example, “He was in _____ for 27 years before being elected president.” There’s also a series of nine letters to use in solving the “who-doku,” and the grid itself has a number of circled spaces, as well as shaded areas. When it’s totally filled in, the circled letters provide the answer to the clue, while the shaded ones reveal who the person is. So the solution to the question above is, “prison” and the man is question is Nelson Mandela.

Interesting article on rating the difficulty of Sudoku's and various solving methods (including a short backtracking program written in Ruby).

Offers printable Sudoku of various difficulty levels inclunding an automatic solver.

Pretty decent book on how to solve Sudoku's. I got mine from the author and my wife has learned a lot from it, so I just bought one for my mom.

Quoted: Here it comes: a revolution in sudoku solving! This is by far the most complete guide to cracking these addictive puzzles ever produced, with tricks even the experts won’t know. While most books might have a few pages of introduction before proceeding straight to the sudokus, this one covers it all: hidden pairs, naked pairs, X-wings, jellyfish, squirmbag, bivalue and bilocation graphs, turbot fish, grid coloring, and chains. Every single one is here, and much more too, including the exclusive Gordonian logic methods (Gordonian rectangles and Gordonian polygons) that will turn even the hardest puzzles into a breeze. Of course, there are hundreds of sudoku for practice. A very special addition is a reprint of the very first sudoku ever published in 1979, from Dell Pencil Puzzles and Word Games magazine!