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A Sudoku whose regions are not (necessarily) square or rectangular is known as a Jigsaw Sudoku. In particular, an N × N square where N is prime can only be tiled with irregular N -ominoes . For small values of N the number of ways to tile the square (excluding symmetries) has been computed (sequence A172477 in the OEIS ). [ 10 ]
Buku Sudoku 360 offers variations on the traditional Sudoku puzzle including 4x4, 6x6, 8x8, 9x9, 12x12 and 16x16 grids. There are also three difficulty levels featured, as well as a "Create Your Own Sudoku" feature.
The world's first live TV Sudoku show, held on July 1, 2005, Sky One. The world's first live TV Sudoku show, Sudoku Live, was a puzzle contest first broadcast on July 1, 2005, on the British pay-television channel Sky One. It was presented by Carol Vorderman. Nine teams of nine players (with one celebrity in each team) representing geographical ...
A Sudoku may also be modelled as a constraint satisfaction problem. In his paper Sudoku as a Constraint Problem, [14] Helmut Simonis describes many reasoning algorithms based on constraints which can be applied to model and solve problems. Some constraint solvers include a method to model and solve Sudokus, and a program may require fewer than ...
WiiWare World gave the game 6 out of 10, believing Sudoku Challenge to be an acceptable puzzler but with still room for improvement. Commenting that the presentation was functional and that most players will be satisfied with what was on offer, with the sudoku puzzles varying in difficulty to challenge players of all skill levels, they were also impressed with the number of puzzles included ...
In my local newspaper, the standard sudoku (9x9 grid with 3x3 sub-grid) always comes with a given difficulty rating, which ranges from one to five stars – five being the hardest. It would be nice to have a separate section, in the Sudoku article, with info about difficulty levels in sudoku.
Sudoku Mania is a 2006 sudoku puzzle game developed by ... The game's puzzles are randomly-generated and are divided into 4 different difficulty levels: simple, easy ...
Killer sudoku (also killer su doku, sumdoku, sum doku, sumoku, addoku, or samunanpure サムナンプレ sum-num(ber) pla(ce)) is a puzzle that combines elements of sudoku and kakuro. Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic ; the hardest ones ...
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