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Tough Sudoku for 17/November/2011

                 
                 
                 
                 
                 
                 
                 
                 
                 

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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High and dry! (Almost didn't notice them at first!)
17/Nov/11 12:17 AM
What an awesome shot! I see the Blue Heron around here a lot, but never a nest. Soooooo cool!
17/Nov/11 12:40 AM
1. Note chi3=349.Unique possibilities to 28.
2. Whether h8=8;OR h8=6,c8=7,b7=8=f9;g9=49.UP52.
3. Whether b6=5;OR b6=4=f5,a5=7;i5=5.UP53.
4. Whether e3=1;OR e3=7=f5,a5=6;d5=1.UP81.
17/Nov/11 2:07 AM
8.3*
200010400000004012007508000760040050080000006005300100019600200000051060000000000
17/Nov/11 3:43 AM
8.5* (can't find a hard one today)
500009040063070080000006005005900000100082006070001000007300900008010400000008000
17/Nov/11 5:22 AM
8.9 mystery level- this one like a chess player who bungles the opening and then, annoyingly, starts defending like a master for the next 60 moves...
040070092008000340001000000890502003000000006500900000000007020230000600000005100
17/Nov/11 6:34 AM
Wonderful!!
17/Nov/11 10:11 AM
That's an amazing shot! They look pretty big ...
17/Nov/11 1:56 PM
got the UP to 29 then had to have a guess. Pretty straightforward after that
18/Nov/11 12:11 AM
8.5*
// FXW(4) -4b3
1. aur(18)bd79, [(1)c79=::d8-i8=*i6-(1=678)agh6-(6)c4=c1] = (1)i1 # -1c1
// WW(12)g8c9.d89, -2a8
// MW(49)b7/bch5, -9h7
18/Nov/11 12:34 AM
8.3*
// aur(12)cd56, (2)f6=::(1)c6 # -2c6
// FXW(5)ag18/a3, # -5b1
1. MR(42)c1/d12.f1=(368)c189-(359=2)d489 # -2b1
2. (6)a8=(6-5)a1=g1-(5=8)g8-ac8=c9 # -8a8, -6c9
18/Nov/11 1:20 AM
8.9 long path, probably missed simpler:
// SS(5) -5i7
1. (7=4)g6-(4=8)g3-WW(58)b3g9.b78c9=(6)b3-(6=7)b4
# -7hi4, YW(48.7)g36h2, -7h46
2. (4)a1=(4-3)a5=(3-7)c4=c1 # -4c1, -7a1
3. (6=25)b78-(5)c9=YW(46.3)c69a5-(3=67)bc4-f4=f89 # -6de8
4. (9)f2=(9-6)f8=b8-a9=(6-4)a1=(4-5)c2=i2 # More...
18/Nov/11 4:20 AM
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