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Tough Sudoku for 10/February/2014

                 
                 
                 
                 
                 
                 
                 
                 
                 

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10/Feb/14 1:31 AM
SE=7.2 UP to 42
1)Forcing:(6)h4=(7)g5=(8)a5 or(6)h9=(5)c9=(7)a9=(8)a5 => a5=8 UP=45
2)(-5)h4=(5)b4=(7)c4=(2)c8=(5)c9 => h9<>5 UP=81
10/Feb/14 2:46 AM
#1. UP46; (8=3)i8-(3=2)a8-2a6=2d6-2d4=*[(8=*5)d4-5d5=(5-7)g5=(7-6)h4=6i4] :=> [8i8==8d4==6i4]-8i4; UP81
10/Feb/14 2:52 AM
(28) 2@d46=>d3<>2
(33) 379@abc1=>f1<>379
(47) 8?@g2=>[d2=9&i8=8=>i9=3]=>d9={}=>g2<>8
(48) 5?@g5=>[h6=3&h4=7]=>h3={}=>g5<>5
(49) 2?@a6=>[a8=3&d6=8=>g8=8]=>i8={}=>a6<>2
VHBC to More...
10/Feb/14 7:07 AM
1. Note gi1=56.Unique possibilities to 46.
2. Whether i4=6;OR i4=8,i8=3,a8=2=c4;gh6=35,b4=5,h4=7;h9=6.UP81.
10/Feb/14 9:00 AM
Standard techniques UP 46
1. Kraken cell (289)a6 =>SIS 5g8=6h9 =>h9<>5 UP 81
||(2)a6-a8=(2-5)c8=(5)g8
||(8)a6-(8=7)a5-g5=(7-6)h4=(6)h9
||(9)a6-(9=5)b6-(5=38)gh6-(8=6)i4-h4 =(6)h9
10/Feb/14 10:46 AM
6.54
15/Feb/14 4:57 PM
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