![]() ![]() The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met: House Any nonrepeating set of 9 cells: can be used as a general term for "row, column, or nonet" (or, in Killer X variants, "long diagonal") Rules Terminology Cell A single square that contains one number in the grid Row A horizontal line of 9 cells Column A vertical line of 9 cells Nonet A 3×3 grid of cells, as outlined by the bolder lines in the diagram above also called a box Cage The grouping of cells denoted by a dotted line or by individual colours. Other puzzle-makers may produce entirely asymmetrical puzzles. This is a matter of aesthetics, though, rather than obligatory: many Japanese puzzle-makers will make small deviations from perfect symmetry for the sake of improving the puzzle. Traditionally, as with regular sudoku puzzles, the grid layout is symmetrical around a diagonal, horizontal or vertical axis, or a quarter or half turn about the centre. Killer sudoku puzzles were already an established variant of sudoku in Japan by the mid-1990s, where they were known as "samunamupure." The name stemmed from a Japanized form of the English words "sum number place." Killer sudokus were introduced to most of the English-speaking world by The Times in 2005. More often, puzzles are printed in black and white, with thin dotted lines used to outline the "cages" (see below for terminology). 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.Ī typical problem is shown on the right, using colors to define the groups of cells. Killer sudoku (also killer su doku, sumdoku, sum doku, sumoku, addoku, or samunamupure) is a puzzle that combines elements of sudoku and kakuro. ( Learn how and when to remove this template message)Įxample of a Killer Sudoku problem Solution to the example above The same example problem, as it would be printed in black and white ( May 2020) ( Learn how and when to remove this template message) Please help to improve this article by introducing more precise citations. Otherwise the screen would sit blank for 40 seconds or so until the puzzle is completely solved.This article includes a list of general references, but it lacks sufficient corresponding inline citations. After each pass it passes control to the webpage to update the numbers found. kl.py makes a number of passes to solve the puzzle.kl.py makes extensive use of the python 'set' type.ktest.py - contains a number of sample puzzles that can be run from the command line.jtest.js - javascript rewrite of critical python function as a speedup.kl.py - pure python script that solves the puzzle, can also be run from the command line, see below.sudoku_panel.py - script that reacts to the mouseclicks and displays the result.brythoninterface.py - script to build the webpage.index.html - Contains stylesheet and link to brythoninterface.py.The app is written in brython (A Python 3 implementation for client-side web programming) adapted from a command line version of same. When the above rules fail to find any further singletons, we assemble a list of doubles found so far and go through the list trying numbers in turn until a solution is found. ![]() "Rule 3" If a row, column or grid contains 2 squares with the same options then these options can be eliminated from other squares in the group.įinally, in a small minority of cases we need to look for a heuristic solution.If there is only one place a value can go, then put it there. "Rule 2" A value must go somewhere, ie each row, column and grid must contain a complete set of values."Rule 1" Given a singleton, remove from intersecting lines and grids."squeeze" to eliminate numbers that cannot contribute to row, column, cage totals followed by regular sudoku rules :.Most puzzles are solved by the repetetive application of 4 rules Alternatively click the button "Sample" to load a sample puzzle and "Solve" to solve it. When the grid is complete, press "Solve" and the grid should be gradually filled in. Web app to solve Killer Sudoku puzzles, see Ĭlick on squares to form a cage, then click on the sum of numbers in the cage.
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