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Tough Sudoku for 7/January/2017

                 
                 
                 
                 
                 
                 
                 
                 
                 

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

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Check out the latest post in the Sudoku Forum

Sudoku Solving Techniques

Submitted by: sudoku lover

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Even before the caption came up I said to myself: 'Flight check.' VFR.

My mom had a private pilot's license. She shopped for her 'purses' in the luggage department. A small carryon bag was the only way she could pack all her flight documents and an adjustable wrench!
07/Jan/17 2:36 AM
UP24; 5h3 -> 0 solution; c1=h1=5; UP81
07/Jan/17 2:37 AM
Standard techniques up 24
1. (7)g7=(7-3)h7=h3-(327=4)g13.i3 =>-4g7, -7g1
2. (7)g7=h7-(7249=1)h4568-ef8=(17-3)ef9=(3)g9 =>-3g7
3. (7=8)g7-g6=(86-7)i46=(7)i13 =>-7g3
4. Kraken (249)h4 =>-9g9 More...
07/Jan/17 9:34 AM
#25 3?@h7=>{g7=7,e9=3=>[f9=7=>f8=1&e2=7=>b3=7=>i3=2=>g1=4],d6=3=>[d5=9=>h5=4,f4= 2=>h4=9=>h8=2]}=>g9={}=>h7<>3
VHBC to #81
V:Only cell left in Vertical column for this candidate
H:Only cell left in Horizontal row for this More...
07/Jan/17 12:33 PM
11:54
07/Jan/17 4:53 PM
SE=8.5
1)(7)f9=(7-3)e9=g9-(3=27)gi3-(7)b3=(7)b2,=>f32<>7
2)(8)f3=(8-7)e1=e2-b2=(7)b3-(7=2 )i3,=>b3<>8,f3<>2
3)(3)h7=h3-(3=276)gib3-(648=1)b467,=>h7<>1
4)(3)g9=(3-1) More...
08/Jan/17 4:57 AM
1:51:56
08/Jan/17 11:00 AM
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