Play Killer Sudoku or Sumdoku. Fill the grid with the numbers 1 to 9, such that each row, column and box contains each number only once. Additionally, a Killer Sudoku grid is divided into cages, each cage has its own background color. The values of the cells in a cage must sum up to the total for that cage, shown in the cage's top left corner. The same number cannot appear in a cage more than once.
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, however, can take hours to solve.
What is the difference between Sudoku and Killer Sudoku?
Killer Sudoku is a mix of Sudoku and Kakuro. Your goal is the same as in regular sudoku: fill every row, column and 3x3 region with the numbers 1-9 once. The difference is how you arrive at those numbers. In killer sudoku, no numbers will be filled in at the start.
How do you solve the ultimate killer in Sudoku?
How do you use the 45 rule in Killer Sudoku?
The Rule of 45 All the numbers in a given row, column or nonet should add up to 45. This rule can also be used smaller puzzles: the number is 21 for a 6x6 puzzle and 10 for a 4x4 puzzle. Take a look at the Killer Sudoku grid below.
Do Sudoku players have high IQ?
From this case study it can be concluded that an individual who is skilled at solving Sudoku puzzles likely has a high general IQ. The results of the weak correlation between Sudoku scores and the WAIT test indicates that in some cases a high Sudoku doesn't necessarily mean a high general IQ.
Practising a game like sudoku or using a brain training app might make you better at it but it won't boost your IQ or general brain power, a study claims.01-Aug-2018
What is a 5 grid Sudoku called?
Samurai sudoku (also known as Gattai-5 or simply Samurai) is a sudoku variant where there are five overlapping grids that need to be solved. These five grids overlap to form an X shape as shown below. In most versions of Samurai sudoku, each of the five regular sudoku grids can be solved independently of each other.
What are the 3 rules of Sudoku?
What is the hardest Sudoku in the world?
A Finnish mathematician claims to have designed the world's most difficult Sudoku. The numerical puzzle took Arto Inkala three months to design, and it has only one solution - one that only the sharpest minds will discover, he told the Daily Telegraph.29-Jun-2012
What is a hidden triple in Sudoku?
"Hidden triples" applies when three cells in a row, column, or 3x3 block contain the same three Notes. These three cells also contain other candidates, which may be removed from them.