Stars & Stripes Sudoku

To solve a normal Sudoku puzzle, you fill in a 9 x 9 grid of digits, each square containing a digit, 1 - 9 with none of the digits repeated. 
In Stars & Stripes Sudoku we still have 1 - 9 and we’ve added three stars. Each row and column now contains twelve spaces instead of nine and the boxes are 3 x 4. Nine of the spaces in each row, box and column will have one of the nine digits; the other three spaces will contain stars.

Although the puzzle is shaded for appearance, the shading doesn't affect how the puzzle is solved.
4 1 * 5 8 2 * 9 * 3 6 7
6 3 8 *                
2 7 9 *                
*                      
5                      
3                      
7                      
8                      
9                      
*                      
1                      
*                      
In this example, you can see that the filled in row, column and the box each have 1 - 9 and three stars. 

Remember that unlike digits, stars are all the “same”. Having one star in a row, column or box doesn’t prevent it from having others. In fact, there are always three of them. 

Solving Strategies:  Solving Stars & Stripes Sudoku
Title:
Stars & Stripes Sudoku
ISBN:
978-0-9815351-1-1
Item #
53511
Published:
2008
Pages:
148
MSRP:
9.95USD
Author:
Matt Mayfield