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Tough Sudoku for 22/October/2019

                 
                 
                 
                 
                 
                 
                 
                 
                 

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

  1 2 3 4 5 6 7 8 9
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Sudoku Solving Techniques

Submitted by: sudoku lover

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Beautiful lighthouse and keepers cottage.
Lighthouses are always interesting.
22/Oct/19 5:44 AM
Jackie is first when the day is well underway.
22/Oct/19 8:39 AM
S.E. 8.8
Long krakenless paths exist.
22/Oct/19 9:11 AM
And the sky is gray!
What can we say?
22/Oct/19 9:19 AM
Basics to 28.
1. (9)b9 = ef9 - d7 = (96)d54 - (6)h4 = (67)h79 => -7b9 ; UP = 30
2. (148=5)g89.i9 - (5=168)*i456 - (6)h4 = (6)h7 => -18h7, -18i7*
3. (1)a1 = a78 - (1=49)b89 - (9)c7 = (9)c12 => -9a1
4. (3=1)d8 - df7 = a7 - (1=26)a81 - (6)b2 = (6)g2 - (6=1893)g3.h123 => -3h8 ; More...
22/Oct/19 10:34 AM
SE=8.8
Basics to UP=28
1)(9)b9=ef9-(9=136)d784-(6)h4=(6-7)h7=(7)h9,=>b9<>7
2)(36=3)ih7h8-(3=32)h321i32-(4) i2=(4)g2-(4=18)g98,=>hi7<>18
3)(29=8)c12-c7=a7-a65=(8-9)b6=(9)a65,=>a1<>9
4)(36= More...
23/Oct/19 8:04 AM
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