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The killer sudoku variant combines elements of sudoku and kakuro. A killer sudoku puzzle is made up of 'cages', typically depicted by boxes outlined with dashes or colours. The sum of the numbers in a cage is written in the top left corner of the cage, and numbers cannot be repeated in a cage.
A 9x9 sudoku puzzle... ...and the solution (the numbers in red have been added to the grid) Sudoku (数独, sūdoku) (sometimes spelled as Su Doku, but also called Number Place or Nanpure) is a puzzle that is very popular in Japan.
In his paper Sudoku as a Constraint Problem, 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 100 lines of code to solve a simple Sudoku.
There are many Sudoku variants, partially characterized by size (N), and the shape of their regions. Unless noted, discussion in this article assumes classic Sudoku, i.e. N=9 (a 9×9 grid and 3×3 regions). A rectangular Sudoku uses rectangular regions of row-column dimension R×C.
Du-Sum-Oh puzzles are also known as Latin Squares Puzzles (invented by Mark Thompson), Squiggly Sudoku, Jigsaw Sudoku, Irregular Sudoku, or Geometric Sudoku. These puzzles typically have anywhere from 5 to 9 rows. The number of rows is always equal to the number of columns.
Apr 15, 2024 · A sudoku puzzle is one of the deepest logical objects discovered in recent decades or rather re-discovered, since it has been around from the time of Euler and for a while has existed independently among popular puzzles in Japan.
May 17, 2024 · Sudoku, popular form of number game. In its simplest and most common configuration, sudoku consists of a 9 × 9 grid with numbers appearing in some of the squares. The object of the puzzle is to fill the remaining squares, using all the numbers 1–9 exactly once in each row, column, and the nine 3 ×.
Sudoku is a logic-based puzzle. It is a type of constraint satisfaction problem, where the solver is given a finite number of objects (the numerals 1-9) and a set of conditions stating how the objects must be placed in relation to one another.
An overview of the history of Sudoku puzzles: the inventor, origin and meaning of Sudoku name, date of creation and development stages of one of the most useful and popular puzzle games in the world.
The history of Sudoku began to be written in the 18th century, in Switzerland, thanks to the physicist and mathematician Leonhard Euler (1707-1783). Euler combined the concepts of Latin Squares and Magic Squares to devise a mathematical system to be used in statistical analysis.
