KenKen Puzzles are created by Japanese educator Tetsuya Miyamoto set to be the successor to Sudoku.

KenKen puzzles can be solved by combining the four main mathematical functions of addition, subtraction, multiplication and division. To train the brain the puzzles are offered without any instruction. There are important keys to be found but no fixed starting place and no method of progression that can be learnt as a strategy. The brain is forced to dart between competing theories. It’s impossible to solve KenKen puzzles without the scientific process of trial and error and that’s the rational [Read More...]

The 3rd World Sudoku Puzzle Championship (WSC) is happening as we type in Goa, India.

There are links http://wsc2008.com/ on the WSC webpage to the Sudoku puzzles used for the Finals. The whole page has the same address so go to Downloads in the sidebar). In the last link ‘all rounds’ from the finals, note the time limits (6 regular Sudoku’s of increasing difficulty and 5 mini Sudoku’s in 35 minutes; 7 Sudoku variants and 5 mini’s Sudoku’s in 40 minutes).

Thanks to Leigh Anne for this great Sudoku puzzle tip. Happy Puzzling

Tags: Sudoku | WSC

If you like Sudoku puzzles, the current star in the world of puzzles, go to Sudoku Craving to get your fix. Every day Sudoku Craving will feature a new Sudoku game, which for registered members will be sent directly to them via email. There is also a large archive of Sudoku games, so you won’t have to limit your Sudoky solving techniques to one game a day. Registered members will also have their scores and times saved and ranked, so they can compare themselves to other Sudoku players and track their overall progress. Sudoku Craving promises to [Read More...]

Sling-Do-Ku is the combination of a slot machine mechanic and the traditional Sudoku Puzzle. The game is played on a traditional Sudoku puzzle board, with the addition of a slot reel for each column. Underneath each column with empty spaces is a reel mechanic where numbers are spun like a traditional slot reel and are entered into play. The player can choose to place the number on the board or pass on placing it for that spin. At the end of the turn the player’s number placements are submitted. Each player receives a score based on several factors [Read More...]

Yesterday I received an email from David Chipping about the launch of his SudokuWorld website (available in English and Dutch).

It’s comprised of millions of unique, self produced Sudoku’s that all have one unique solution. The Sudoku’s are produced using a comprehensive method of pattern matching to have fun and intriguing puzzles.

SudokuWorld was launched with 1,000,000 puzzles but has continued to add to this throughout its up-time to provide millions more. They have one of the largest collection of Sudoku’s online today and offer a website service completely free of charge.

Currently the website offers two ways [Read More...]

Koozac is a Flash based mathematical puzzle game and looks like a combination between Tetris and Sudoku.

Object is to clear the game grid by adding up the values of a minimum number of block. The minimum number of blocks you need to remove are shown on the right side of the game grid. This by dropping the colored numbered blocks onto each other to add up to the target value as shown in the red cube on the right side of the game grid. The next target value is in the right bottom corner [Read More...]

Slitherlink & Sudoku is a new puzzle book by Nikoli which is available from Amazon.com.

Slitherink are engaging logic puzzles with some simple rules and four numbers: 0, 1, 2, and 3. They are Nikoli’s original creations and as, known as Sli-Lin in Japan, and they provide endless enjoyment. Nikoli is famous for their puzzle books as all puzzles are hand made without using a computer.

The grid features scattered dots and numbers; connect the dots with a vertical or horizontal line until you’ve created a single loop with no crossings or branches. The trick is [Read More...]