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Tough Sudoku for 18/December/2011

                 
                 
                 
                 
                 
                 
                 
                 
                 

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

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Submitted by: Gath

Indicate which comments you would like to be able to see

An unusual color - lovely view!
18/Dec/11 1:13 AM
Yeah, it's a lake!

No guesses.
18/Dec/11 1:15 AM
It's a wonderful colour in a very rugged landscape. I'd love to know where this is.
18/Dec/11 2:55 AM
8.4**
500000040060900800003050001070001030008000725000500900050046000600290070002030000
18/Dec/11 6:08 AM
9.0*****
008400000690300000305090000009200080053070940070009100000080601000001094000003200
18/Dec/11 7:51 AM
1. UP to 28
2. Whether G7=1 or 6, C1=D3=1, UP to 30
3. Whether F3=2 or 7, A2=3, UP to 81.
18/Dec/11 9:17 AM
1. Unique possibilities to 28.
2. (Chris's) Whether g7=6=e9,e1=5,f1=3;OR g7=1,g8=9,c8=3;c1=1 UP30.
3. If e2=4=b8,b9=7=i8;the 17 rectangle at eh46 is unresolvable.So d2=4.UP81.

Chris, I can't see why a2=3 after f3=7 in your step 3.
Regards, Alfred.
18/Dec/11 11:32 AM
Actually, I'd like to know where it is, too. I was flying from coast to coast in the US, and this was somewhere below. I'm guessing California.

- Keyan
18/Dec/11 8:11 PM
8.4**
// FXW(9) -9h3
1. WW(34)a4.i2/a3b2=(2)a4-(2=147)ace8-(237=6)i8g79-(6=4)g6 # -4i4
2. (4=1)c2-c9=(1-9)b9=XW(9)bh17-(9=46)i16 # -4i2
19/Dec/11 3:56 AM
9.0*****
// als-xz:(146=5)abf6-(5=168)d45f5 # -16e6
1. SS(6)fi5.h49=(6-1)h7=(1-4)b7=c8-c4=MW(26)c4/ai5.f5-(6)de4=f56 # -6f9
2. (1)e8=(1-6)e9=(6-3)h9=h3-(234=1)b379 # -1c8
3. KColumn(6)h479 # More...
19/Dec/11 5:45 AM
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