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# Tough Sudoku for 16/July/2012

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Submitted by: Gath

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 1. Note gi4=78.Unique possibilities to 40.2. Whether c2=4=g5,g8=6;OR c3=4,c1=9,g1=3(to avoid the 78 unresolvable rectangle at gi14);a8=3. UP81. 16/Jul/12 1:10 AM #1. LC and LS up to UP40#2. Chain[6] : 9c1=(9-4)c3=4c2-4g2=(4-6)g5=6i5-(6=8)i8-(8=1)c8 :=> -1c1; UP81 16/Jul/12 1:18 AM SE=7.21)XYZ:(37=1)b32-(1=3)f2,=>a2<>32)AUR(18)bc28:(3)a8=(4)c2-g2=(4-6)g5=(6)g8,=>g8 <>3.UP=81 16/Jul/12 2:01 AM Typo,2)AUR(18)ac28 16/Jul/12 2:03 AM 12,36 16/Jul/12 5:08 AM Beautiful photo!! 16/Jul/12 8:25 AM Copy Robin - beautiful!! 16/Jul/12 10:05 AM UP to 26 i4=g4=7=>b4<>7, b4=d4=16=>f4=9Up to 29 6 double@g8&i8=>e8<>6=> e6=6UP to 40 36 double@d9&f9=>b2=2UP to 81 16/Jul/12 2:52 PM UPto26 7double@i4&g4=>b4<>7,16double@b4&d4=>f4=9Upto29 6double@g8&i8=>e8<>6=> e6=6UPto40 36double@d9&f9=>b2=2UPto81 16/Jul/12 3:03 PM Sorry new to this UPto26 7double@i4&g4=>b4<>7,16double@b4&d4=>f4=9Upto29 6double@g8&i8=>e8<>6=> e6=6UPto40 36double@d9&f9=>b2=2&a8=3UPto81 16/Jul/12 4:15 PM Took me forever and ended up having one guess after reaching 45UP....but WOW love the photo! Was worth the perseverance!Thanks for this one 17/Jul/12 12:19 AM