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Tough Sudoku for 3/August/2019

                 
                 
                 
                 
                 
                 
                 
                 
                 

Choose a number, and place it in the grid above.

  1 2 3 4 5 6 7 8 9
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Submitted by: sudoku lover

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SE=9.0
03/Aug/19 12:13 AM
Elephants really love the water as seen in this photo.
03/Aug/19 4:16 AM
1. Unique possibilities to 25.
2. Whether c2=19,c4=4;OR c2=6,f2=9=e5,d2=1=e7,d5=4=e8;c9<>4.UP29.
3. Whether c9=36;i7=36.UP31.
4. Whether g1=1,g6=4=hi9;OR g1=38,a1=2=e9;e9<>4.UP37.
5. Whether g1=3,ia1=82;OR g1=1=c2,f2=9=e5,d5=4=b8,a9=7,a7=3;b7=2.UP81.
03/Aug/19 5:23 AM
In step #2, 'e8' should read 'e9'.
03/Aug/19 5:28 AM
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