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Tough Sudoku for 1/February/2017


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Sudoku Solving Techniques

Submitted by: sudoku lover

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1. Note di5=69.Unique possibilities to 44.
2. Whether d7=9,f8=1,gi8=89;OR d7=5,e7=2,g78i8=189;h79=57.UP81.
01/Feb/17 12:49 AM
01/Feb/17 1:44 AM
Standard techniques up 44
Kite (9)f8=gi8-h79=h6 =>-9f6; stte
01/Feb/17 3:59 AM
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