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Sudoku Xtra, written by Dr Gareth Moore
Sudoku Xtra 24
logic puzzle compendium
Printed puzzles from Dr Gareth Moore

Sudoku
 
Hanjie
 
Kakuro
 
Futoshiki
 
Calcudoku
 
Hitori
 
Killer Sudoku
 
Nurikabe
 
Slitherlink
 
Skyscraper

Sudoku-X
 
Jigsaw Sudoku
 
Consecutive Sudoku
 
Kropki Sudoku
 
Sudoku XV
 
Oddpair Sudoku
 
Toroidal Sudoku
 
Killer Sudoku-X
 
Killer Sudoku
Pro

 
Jigsaw Killer
Sudoku

Looking for puzzles for your book, magazine or newspaper?
 

 

Killer Jigsaw Sudoku puzzles and instructions


Play free Killer Jigsaw Sudoku puzzles:
Jigsaw Killer   22nd Aug
  Jigsaw Killer-6 157 
Jigsaw Killer   6th Aug
  Jigsaw Killer-6 154 
Killer Jigsaw Sudoku puzzles replace the rectangular bold-lined boxes in Killer Sudoku with irregularly-shaped 'jigsaw' regions. Killer Jigsaw Sudoku is also sometimes known as Killer Irregular Sudoku, Jigsaw Killer Sudoku or even Killer Sumdoku and Killer Mathdoku.

How to solve Killer Jigsaw Sudoku puzzles
Since Killer Jigsaw Sudoku is an extension of regular Killer Sudoku, if you're not familiar with Killer Sudoku then it's perhaps best to start with the instructions for Killer Sudoku first.

In Killer Jigsaw Sudoku there are irregular jigsaw-regions which replace the 3-by-3 (or other size) box regions in normal Killer Sudoku. These jigsaw-regions, like the boxes, are always the same size. This means that in, for example, a 9x9 puzzle you must place 1-9 once each into every bold-lined jigsaw region, as well as the rows and columns. The jigsaw shapes often make it harder to find the next logical deduction, so this is not a puzzle that's recommended for beginners!

Killer Jigsaw Sudoku exampleSo the aim of the puzzle is to place each of the numbers 1 to 9 (or 1 to the size of the grid) into each of the rows, columns and bold-lined jigsaw shapes in the grid, while also placing these numbers in such a way that each dashed-line cage adds up to the given total.

It's also critical to know that a number can't be repeated inside a dashed-line cage.

Look at the solved puzzle on the left. In this 6x6 puzzle notice how there are 6 bold-lined jigsaw regions, each containing 1 to 6 exactly once. Notice also how the content of each of the dashed-line cages adds up to the number given at its top-left, and how no number repeats inside a dashed-line cage.

Every Killer Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Killer Jigsaw Sudoku puzzles on puzzlemix appear at a wide range of sizes and difficulties. Usually they are 6x6, 8x8 or 9x9. In each respective case you must place 1-6, 1-8 or 1-9 once each into every row, column and bold-lined jigsaw shape.

Other types of puzzle
It's not just Killer Jigsaw Sudoku you can solve online at puzzlemix. You can also solve logic puzzles that include these:
CalcudokuConsecutive SudokuFutoshikiHanjie
HitoriJigsaw SudokuKakuroKiller Sudoku
Killer Sudoku ProKiller Sudoku-XKropki SudokuNurikabe
Odd Pair SudokuSkyscraperSlitherlinkSudoku
Sudoku XVSudoku-XToroidal Sudoku

Keywords
Are you searching for help with Killer Jigsaw Sudoku puzzles? Stuck on solving Irregular Sudoku? Don't know the instructions for Killer Jigsaw Sudoku? Need Irregular Sudoku instructions? Want solving hints and tips for Killer Jigsaw Sudoku? Then puzzlemix is the place for you to play Irregular Sudoku puzzles online.

External links

Looking for printed Killer Jigsaw Sudoku puzzles? Visit Sudoku Xtra for puzzle magazines and books.

Or are you looking for a Killer Jigsaw Sudoku puzzle supplier? If so then check out Any Puzzle Media, my puzzle production company.


All site contents ©Gareth Moore 2005-2017 - email gareth@puzzlemix.com - publishers please visit Any Puzzle Media