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Tough Sudoku for 19/January/2012

                 
                 
                 
                 
                 
                 
                 
                 
                 

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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'No comment'???
...because they were speechless!
19/Jan/12 12:22 AM
Day Lillies? Bright and beautiful!
19/Jan/12 12:22 AM
I think it is a clivia. I have lots in my back garden.
19/Jan/12 12:25 AM
Lovely and bright.
19/Jan/12 12:39 AM
UP to 48
ALS-XZ (2=3479)d2579-(2=37)f36=>d1,f9<>7 UP to 81
19/Jan/12 12:47 AM
1. Note ab1=15.Unique possibilities to 48.
2. Whether c2=3;OR c2=6,c1=7,d1=2,d5=3;d2=9.UP81.
19/Jan/12 1:39 AM
(9=73)f39-(3=9)d2 => -9d79.f2
19/Jan/12 2:11 AM
8.4* (SE @ 3K x 33FC ack!)
030000000600000035001700600006900040000078002000042060003000100080507003020010050
8.4** (SE @ 13K x 20FC)
600907200059030600004000500000000000300060000020001370001000000040290005000000903
19/Jan/12 2:21 AM
9.0 ML:
000001200805000090040600008200000710000790000600003000080050306090310050000000000
19/Jan/12 6:00 AM
They're actually singing the Hallelujah song.
19/Jan/12 8:18 AM
1. (8.4*).Unique possibilities to 33.
2. Whether d4=3=g6;OR d1=3,g1=8;i6=8.UP34.
3. Whether d4=1=b6=i9,d1=3,g1=8,g6=7=i3,g2=4;OR d4=3=a5,e6=5=c9,b45=15,c5=4;c2=9.UP81.
19/Jan/12 7:04 PM
Exactly the same solution as Alfred.
19/Jan/12 8:57 PM
8.4* w/o depth 20+ forcing net:
// xyc:(8)gd1,(3)d14.efg6; -8g6
// ur(35)ef67::(1=*5)f6; -3f6
// xyc:(19)h5,(92)h2,(2)he7,(3)e76,(31)d4; -1i4
1. xyc:(3)eg6,ga5,(4)a*c5,(49)c2,(92)h2,(2)he7
||
(4-5)b5=MW(15)f6/b64.b7-(5)f7=f6-(5=3)e6 # -3e7
20/Jan/12 1:27 AM
8.4**
1. { (3)b7=(3-9)h7=i7-i4=a4* - a3=b3 # -3b3 cont. * - (189=3)b569 }
# -8a4.b13, -9a6.i56, -1b7, -18h7
// als-xz:(1=678)afh2-(27)a78=SF(1)ade.178 # -1h8
// ext. als-xz:(1=367)b179-(6=4)h1-h9=i9 # -1i9
2. (489=1)a4b56-b9=h9-h2=g2-MR(78)e3/g2.gi3=(4)e3 # -4e4
// MW(24)f8/e7631 -4f13
20/Jan/12 1:28 AM
9.0 ML **/* level:
1. (9)a7-(9=5)f7-(5=1)g7-ac7=b8-(1=35)b56
||
[(147=*3)a237-(3=7)h7-i89=i2-(7=4)a2]-(4=135)a5b56 # -5b4, -3c56
// SW(36)b9/bi6.h95 -3h5
2. (6=3)b9-b6=(6-9)i6=(59')gi4-(159=6)g178 # -6b8
// SDQ(13458)abcg5.b6 -8f5, -4fi5
3. (1=247)dfi8-e78=e4-(2=5)f5-f7=g7 # -1g7
// SS(2)fi5.i2g3 -2f3.. FXW(7)ci29/c1 -7a2
20/Jan/12 1:31 AM
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