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Tough Sudoku for 20/January/2016


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

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Sudoku Solving Techniques

Submitted by: sudoku lover

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How special, Anne.
20/Jan/16 12:07 AM
SE=7.2 UP to 27
1)2-chain logic:(7)i9=(4)g9 or(7)b9-b2=(7)c2=(5)g2 => g9<>5,g2<>4 UP=81
20/Jan/16 12:29 AM
#28 6@b456=>c45<>6
1?@a6=>f6=5=>[f9=8=>c8=8=>c5=9&g9=5=>c2=5]=>c4={} =>a6<>1
VHBC to #81
V:Only cell left in Vertical column for this candidate
H:Only cell left in Horizontal row for this candidate
B:Only More...
20/Jan/16 6:48 AM
Looks very lifelike.
20/Jan/16 7:27 AM
1. Unique possibilities to 27.
2. Whether a4=3=b2;OR a4=5,f69=58;b9=7.UP81.
20/Jan/16 7:34 AM
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