Start Pause Reset
10 Comments Previous / NextHelp

Tough Sudoku for 6/May/2009


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

Interesting detail, Kate!
06/May/09 12:05 AM
1. Note triple 169 at ace9.Unique possibilities:b9=5,g2=9,i4=6 (UP 26).
2. Note pair 16 at f37.If g1=6,g6=1=c4=a9.Likewise,g3=6,f7=6,e9=9 makes a9=1.So c4=1 (UP 28).
3. If c7=6,f3=6=g1,g6=1,c9=9,locked 8s at gi5 and c5=3.Hence c3 and c8 are not 3;a3=3 and UPs to 33.
4. If More...
06/May/09 2:32 AM
Nice entryway!
06/May/09 5:03 AM
just under 1 hr.
06/May/09 5:13 AM
I really enjoy the pictures.
06/May/09 6:52 AM
1.Start at 23, =>UP=26
=> c5<>8.UP=27
4.Loop:(7=2)b1-b8 =(2-7)c8=(7)c3,=>a13<>7,c8=27.UP=33
6.(3):b4=e4- e7=c7,=>b8<>3.UP=81

06/May/09 7:31 AM
Step 5 is not necessary,thanks
06/May/09 8:59 AM
11/May/09 2:15 AM

09/Sep/10 10:31 PM
1.SSTS to UP26
2.(1=9)a9-(9=6)e9-e1=(6-1)g1=g6 > -1a6, UP=28
> -8c5, FXW(3)be48, -3e7, UP81
26/Jan/11 3:45 PM
Please Log in to post a comment.

Not a member? Joining is quick and free. As a member you get heaps of benefits.

Join Now Login