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Tough Sudoku for 1/May/2019

                 
                 
                 
                 
                 
                 
                 
                 
                 

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Sudoku Solving Techniques

Submitted by: sudoku lover

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Basics to 48
1.X-chain x=2 =>[a6,c2,g5,g3,h6]<>2 => a6=9 c2=6
h6=6 .. solve
01/May/19 1:02 AM
1. Unique possibilities to 48.
2. Whether ag3=2;c5=2.UP81.
01/May/19 1:33 AM
18:55.
01/May/19 3:01 AM
is the time travel done by sitting on a grandfather's lap?
01/May/19 7:19 AM
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