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Tough Sudoku for 20/May/2016


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

  1 2 3 4 5 6 7 8 9
Check out the latest post in the Sudoku Forum

Sudoku Solving Techniques

Submitted by: sudoku lover

Indicate which comments you would like to be able to see

1. Unique possibilities to 51.
2. Whether a8=5,a9=9;OR g8=5,i8=1;i9=6.UP81.
20/May/16 12:29 AM
Hope the ducks get away!
20/May/16 4:15 AM
Standard techniques UP 51
UR (13)ci12 =>9i1==4c2
//(9)i1=(4)c2-b3=(4-6)b9=(6)i9 =>-9i9 UP 81
20/May/16 6:48 AM
Hi cenoman. After (4)c2-b3, can't 4 also occupy b7, not only b9?
Best Regards, Alfred.
20/May/16 9:56 AM
Interesting puzzle, how it suddenly stopped after so many UPs. Also a new photo, I think, or at least I don't remember seeing it before.
20/May/16 12:59 PM
Hi Alfred,
True. My mind must have been elsewhere when I wrote that !
Best regards. cenoman
21/May/16 6:59 AM
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