Frame Sudoku is known with many different names such as Outside Sums Sudoku or Sum Frame Sudoku. However generic name for this Sudoku type is Frame Sudoku. In this Sudoku type outside given hints gives the sums of the digits appearing in the first box for corresponding row or column. There is also Produce Frame Sudoku where outside given hints gives the product of the digits in the first box for corresponding row or column. I have been using all these different names for this Sudoku type. There are few Sudoku puzzles which I prepared recently. I will posting links to these puzzles here.
Rules of Frame Sudoku
Place a digit from 1 to 9 into each of the empty cells so that each digit appears exactly once in each row, column and 3x3 outlined box. Additionally numbers outside the grid equal the sum of the digits appearing in the cells in the first box (till the next bold line) seen from that edge of the grid.
Sum Frame Sudoku (Daily Sudoku League #142)
There is similar looking Sudoku type which is called Inner Frame Sudoku. Here are some of the puzzles of Inner Frame Sudoku.
Rules of Inner Frame Sudoku
Classic Sudoku Rules apply. Additionally numbers outside Frame represents sum of 2nd 3rd and 4th digits appearing in that directions.
There are few Frame Sudoku Variations which are mentioned below. Rules of each puzzle type is given in the respective post.
Checkout more Sudoku Variations by clicking on the below image
|Sudoku Variations Main Page|
Checkout more puzzles by clicking on the below image
|Fun With Puzzles Index Page|