Frame Sudoku comes in many different variations. There is Diagonal Frame Sudoku in which Main Diagonal should also contains numbers from 1-9 exactly once. Also there is Product Frame Sudoku in which outside number gives the product of the first three numbers seen in that direction. There is Inner Frame Sudoku in which outside number is the sum of 2nd, 3rd and 4th numbers. On top of all this there is Serbian Frame Sudoku which is very nice variation made on the Frame Sudoku in which top and side numbers givens sum of only two numbers seen in that directions. However Frame Sudoku is Classic Sudoku variation which always remains part of any Sudoku competition. Frame Sudoku is also known with different names such as Outside Frame Sudoku, Sum Frame Sudoku etc. However Frame Sudoku is the standard which is used for this type of Sudoku in most of the competitions.

This Sum Frame Sudoku, I am posting as 179th Sudoku in The League of Extraordinary Ladies & Gentlemen.

This Sum Frame Sudoku, I am posting as 179th Sudoku in The League of Extraordinary Ladies & Gentlemen.

Sum Frame Sudoku (Daily Sudoku League #179) |

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