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Samurai Sudoku

Samurai Sudoku Instructions:
Here's how to play Samurai Sudoku:
Samurai Sudoku is one of the most common sudoku variants. It is, however, not seen massively often in print simply because it requires more space. The aim with samurai sudoku is to place the numbers from 1 - n exactly once in each region in each puzzle grid. As standard, a samurai puzzle contains 5 overlapping grids making an 'X' shape, and so the numbers are 1 - 9 to be placed once in each row, column, 3x3 box. Some regions are shared between grids.

Samurai sudoku may appear a more daunting challenge than standard sudoku because the grid is much larger and there are many more numbers to place.

Indeed a samurai sudoku puzzle is sure to take longer to solve than a standard sudoku, but the process and rules are exactly the same, there are just a higher number of regions and there are other overlaps to consider.

Typically with a samurai sudoku, grids will share a 3x3 box region, and it is often here that most fruit can be found - in terms of placements that can be made - as the cells are in regions in multiple puzzles and therefore their values may be restricted quite early on in the solve process by the values in the two shared grids.

Samurai sudoku puzzles typically have 5 overlapping grids, but this need not be the case. Infact samurai with 2, 3, 4 overlapping grids are also fairly common, and occasionally one sees even larger puzzles published: perhaps with 10, 11 or even more overlapping grids!

Also the overlap pattern can vary: as mentioned often grids simply share one box region, but they can share a lot more, and there are some types of samurai puzzles where the overlap is very extreme, such as the star sudoku - see the article on that particular puzzle for more information.

Solving samurai sudoku can require more patience than with ordinary sudoku, as with tough puzzles there can sometimes only be one move that can be made at a time, therefore you may have to search over multiple grids to find what that move is.

Related puzzles

Arrow Sudoku, Calcudoku, Circle Sudoku, Consecutive Sudoku, Futoshiki, Graeco-Latin Sudoku, HyperSudoku, Irregular Sudoku, Isosudoku, Killer Sudoku, Offset Sudoku, Outside Sudoku, Star Sudoku, Sudoku, Sudoku X, Toroidal Sudoku

Last updated: 14 Feb 2012

Sample puzzle:

Sample solution:

View a sample Samurai Sudoku PDF

Play Samurai Sudoku Puzzles:

If you're a fan of samurai sudoku or would like to give them a go for the first time, then why not take a look at our Samurai Sudoku Magazine which is in PDF format for you to download and print off with your printer.

Samurai puzzles are large enough that it is not very easy to play them online, so they are best enjoyed in traditional print format.

Publish Samurai Sudoku Puzzles: