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Tough Sudoku for 17/May/2019

                 
                 
                 
                 
                 
                 
                 
                 
                 

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

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Submitted by: Gath

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Basics to 24
1.if b2=2 =>UR 46 bg45
2.if b2=9 => b45=46 if b4=4 OR b5=4 => UR 46 bg45
3. => b2=6 solve
17/May/19 2:10 AM
17:39.
17/May/19 2:31 AM
Very blue waters. Nice photo!
17/May/19 5:56 AM
1. Unique possibilities to 24.
Making use of Unresolvable Rectangles:
2. Whether i6=6=c1,b3=5,a13=4,a4=7=b8=i7,i9=9;
OR i6=79; a7=79 (or else 79UR @ hi67).UP26.
3. Whether b9=2,d9=6,b45=7(or else 46UR @ bg45),a4=4;OR
b9=5=c1;OR
b9=9,a7=7,a4=4;
c1=45.UP81.
17/May/19 4:24 PM
SE=9.0
Basics to UP=24
1)(2)f123=f5-(2=28)ac6-(6)c6=(6-5)c1=b3-(5=2)i3,=>de3<>2
2)Kraken:(4)b8543,=>ac6 <>4
||(4-7)b8=a7-(7=4)a4
||(4)b54
||4-5)b3=(5-6)c1=b2-(6=74)ba4
3)(6=2)f5-(2=28)b5ac6-(6)c More...
19/May/19 1:03 AM
Typo, Should read:
1)-(2=28)b5ac6
6)-(6)c6
8)=(4-6)c1
11)-(7=79)ahi7
19/May/19 5:16 AM
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