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Tough Sudoku for 2/May/2016


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

  1 2 3 4 5 6 7 8 9
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Submitted by: Gath

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Standard techniques UP 34
1. (3=9)i3-i8=(9-4)h8=(4)h2 =>-3h2 UP 37
2. (7=8)b9-bc8=(8-2)e8=(2)b8 =>-7b8 UP 81
02/May/16 3:25 AM
Lots of rocks today.
02/May/16 4:25 AM
#29 69@bc2=>c3<>69 #31 4@df3=>g3<>4
#35 7?@g7=>{g5=1=>g2=8=>f1=8,d9=7=>b9=8,b8=7=>e8=2=>c8=8}=>g7<>7
#37 45@i45=>i8<>4 VHBC to #81
V:Only cell left in Vertical column for this candidate
H:Only cell More...
02/May/16 6:28 AM
1. Note egh2=348.Unique possibilities to 34.
Making use of the 39 Unresolvable Rectangle @ hi38:
2. Whether e2=3,h8=4 or else UR;OR e2=8;g2=4.UP81.
02/May/16 11:52 AM
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