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Tough Sudoku for 28/December/2012


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Sudoku Solving Techniques

Submitted by: sudoku lover

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White water fun in the sun!
The only 'white water' fun around here is on a pair of snow skies! Cathy is probably thrilled!
28/Dec/12 12:34 AM
SER=7.1 UP=29
1) Branched S-Wing:
(4)e1-e9=(4)g9 or (7)e1-h1=(7)g3
(3)i1-i6=(3)g4 => g9<>7,g3<>34 UP=81
28/Dec/12 12:43 AM
A variant on Bud's:
1. Unique possibilities to 29.
2. Whether e1=7=g3;OR e1=4,i1=3;g4=3.UP81.
28/Dec/12 1:49 AM
0. Standard techniques UP 29
1. X-Wing (3)ci16 =>ci3<>3
2. (2=3)c1-ab3=(3-7)g3=(7)h1 =>h1<>2 UP81
28/Dec/12 2:01 AM
28 (28)b8c7=>b8<>1
30 (4)c56=>c1<>4 (3)ci1&ci6=>i3<>3
31 g9=7=>(e9=4&h1=7)=>e1={}=>g9<>7
32 (4)c56=>c23<>4 More...
28/Dec/12 1:12 PM
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