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# Tough Sudoku for 31/January/2011

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Submitted by: Gath

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 And by the year 2210 it was filled in! 31/Jan/11 12:11 AM This must be the fence you were referring to in another picture - but I couldn't pick it out. That's a LONG drop! 31/Jan/11 12:33 AM 1. Unique possibilities to 30.2. If f4=5=d3;column c is devoid of 5.So f4=6.UP81. 31/Jan/11 12:43 AM Baloney! He's throwing rocks in the water, just like every other kid! 31/Jan/11 1:05 AM SE=6.6 31/Jan/11 1:18 AM Easy to UP=305 Skyscraper c34-d36 => a6,f4<>5 UP=81 31/Jan/11 1:30 AM Alfred's move as a pattern...skyscraper(5)[(5)d6=d3-c3=c4] => a6<>5, f4<>5 31/Jan/11 1:32 AM or any of 3 finned sword fishes 31/Jan/11 1:45 AM Hmmmmm..... I bet this was interesting! Have a great day everyone! 31/Jan/11 6:03 AM UK extreme has been not recently. UK extreme #228 30 Jan, '11; SE rating 7.11. SST to UP=50.2. (1=2)c1-(2=8)h1-g3=g8-(8=9)i8-i1=(89-1)a13=a8 => c8<>1; UP=61.3. xy-wing (3=9)a8-(9=37)b48 => a4<>3; UP=81. 31/Jan/11 7:34 AM UK extreme (agree disappointing)1.SST to UP502.(1=2)c1-a2=(128')a138-(9)a1=i1 > -1i1, UP61, FXW(9)bg28, -9g7, UP81. 31/Jan/11 11:12 AM the YW I saw at UP61: YW(793)b48a7 > -3a4(step cost for YW higher than FXW when I do these; harder to spot because multi-digit?) 31/Jan/11 11:28 AM (BTW - agree with Alfred that much overloaded '=' symbol in eureka syntax is in the end more confusing than helpful, hence for results just '>' and UPn etc., also <> seems ungainly and requires '=' again for positive results) 31/Jan/11 11:55 AM I am all for condensing notation. 31/Jan/11 4:32 PM While on the subject of notation:AUR : Almost Unique Rectangle."Almost" makes sense,so does "Rectangle", but "Unique" ?? A much more accurate description would be Almost Unresolvable Rectangle. 31/Jan/11 4:53 PM Very easy today - 8:20. 31/Jan/11 8:48 PM