Thursday, February 25, 2016

Equal Product Sudoku (Daily Sudoku League #156)

Equal Product Sudoku appeared recently in Math Variation Sudoku Mahabharat 2016 round. I created this puzzle while practicing for this championship. Equal Product Sudoku is very interesting Sudoku variation in which diagonally touching numbers have the same product with other diagonally touching numbers in same 2x2 square. One has to be very careful while solving this Sudoku type as multiplying number can have many different combinations and missing even a single combination will lead to the getting the wrong solution. Today's Equal Product Sudoku is very interesting puzzle which requires lot of calculations to be done before putting first few numbers. After putting some numbers the puzzle will proceed. However variation rules are used till end. This is the tough puzzle and is only for experienced players. Beginners should try to avoid solving this puzzle as they will find this puzzle very tough. One way to solve this puzzle I found that first placing the prime numbers like 5 or 7 as these numbers cannot be part of the equal product region. Once few of these prime numbers are marked then one can proceed to see the possibilities which satisfies the equal product equations.
This Equal Product Sudoku puzzle I am posting in The League of Extraordinary Ladies & Gentlemen as 156th Sudoku in this series.
Rules of Equal Product Sudoku
Standard Classic Sudoku Rules apply. Additionally intersections marked with 'X' indicate the product of digits in diagonally opposite cells is equal. Not all possible 'X's are marked.
Equal Product Sudoku (Daily Sudoku League #156)
Equal Product Sudoku (Daily Sudoku League #156)
Equal Product Sudoku (Daily Sudoku League #156) Answer

Previous Sudoku Area Sudoku (Daily Sudoku League #155)
Next Sudoku Quadruple Sudoku (Daily Sudoku League #157) 

Below is solution of Tight Fit Sudoku puzzle, which is published with tag name Tight Fit Sudoku Puzzle (Fun With Sudoku #250)
Tight Fit Sudoku (Fun With Sudoku #250) Puzzle Solution
Tight Fit Sudoku (Fun With Sudoku #250) Puzzle Solution

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