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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 ...
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 ...
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 ]
The channel has produced nine Sudoku apps based on Sudoku variants: Classic, Chess, Miracle, Sandwich, Thermo, Killer, Arrow, Domino and Line Sudoku.. In October 2020, a Kickstarter crowdfunding campaign was announced in order to produce a physical book with some of the channel's most popular puzzles.
Solution for a Killer Sudoku Puzzle, solution made with the Killer Sudoku Solver / Sum Number Place Solver (Samunamupure) online (screenshot of solution) Date: 9 January 2010, 20:17 (UTC) Source: Killersudoku_color.svg; Author: Killersudoku_color.svg: Toon Spin ; derivative work: havarhen (talk)
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 ...
KenKen has collaborated with the National Council of Teachers of Mathematics (NCTM), to create a mobile app in order to help students develop their math and logic skills. [11] KenKen is featured on Scholastic Corporation 's online sites Scholastic Math and Scholastic Dynamath, [ 12 ] [ 13 ] as well as on The Math Forum @ Drexel.
This book is intended for a general audience interested in recreational mathematics, [7] including mathematically inclined high school students. [4] It is intended to counter the widespread misimpression that Sudoku is not mathematical, [5] [6] [8] and could help students appreciate the distinction between mathematical reasoning and rote calculation.