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# Tough Sudoku for 8/January/2010

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Submitted by: Gath

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 A great double rainbow photo. 08/Jan/10 12:07 AM Not much of Canada, but a WHOLE LOT of rainbow!It must have been spectacular in person! 08/Jan/10 12:11 AM Sommmmmme-where over the rainbows ... 08/Jan/10 2:17 AM ...blue birds fly...but probably not today as they have gone south for the winter! 08/Jan/10 3:04 AM A stairway to the stars in Carstairs. 08/Jan/10 3:40 AM 28:09 Maen! Nice rainbows! 08/Jan/10 5:40 AM maen all! plenty of refraction going on up there. puzzle wasn't too difficult once i got the center box squared away. 08/Jan/10 6:06 AM 1. Note Pairs 24 at ab4;18 at hi6;19 at a78.Unique possibilities to 25.2. If i7=5,locked 3s at g79,i4=3.If h9=5,i4=5.Hence g4=7.UP26.3. If e5=3,f5=2,d5=1,f7=5=h9=d4;right middle box is devoid of 5.So e9=3.UP28.4. Whether d9 or h9=5,d4 and h5 are not 5.5. If More... 08/Jan/10 6:32 AM 1)Start at 22,basic techniques to UP=262)FXW(5): h9=d9-d4=hi4,=>h6<>5.UP=283)(1=3)g7-i7=i4-(3=6)d4-(6=9)d8-(9=1)a8,=>a7<>1.UP=81 08/Jan/10 8:47 AM Hi Alfred,Step 2 is not necessary, hp(35)i47.UP=26Regards,Sotir 08/Jan/10 9:13 AM Hi Sotir.Usual question:What is UP26? Is it g4=7?Also,when you show h5<>5 (not typo h6 BTW) in step 2,what are the extra 2 UPs?I can see now that my steps 5 and 6 were unnecessary,but I still need step 2 to show g4=7 and step 3 to show e9=3.It looks like your steps 2 and 3 are equivalent to my steps 4 and 7. Regards,Alfred. 08/Jan/10 10:05 AM Thanks Sotir,didn't see your second posting.I missed the 35 pair.That explains g4=7,but what about the other question;after h5<>5,what are the extra 2 UPs?Regards, Alfred. 08/Jan/10 10:16 AM Hi Alfred,2)=>e9=3,g9=6.UP=26Sotir 08/Jan/10 10:33 AM Sorry,2)=>UP=28 08/Jan/10 10:37 AM >> 1 hr 08/Jan/10 2:44 PM Thanks again Sotir.Shows that 4 of my steps (2,3,5,6)are superfluous!Alfred. 08/Jan/10 6:35 PM Was that a Judy singing "Somewhere over the Rainbow"? 09/Jan/10 1:17 PM 24:07 10/Jan/10 9:56 AM The caption should have read "Canada Day" and my photo does not do it justice at all! 16/Jan/10 2:11 AM SE=7.3 10/Sep/10 10:44 AM
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