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Submitted by: Gath

 Indicate which comments you would like to be able to see GeneralJokesOtherSudoku Technique/QuestionRecipes
 Missed the sweep |  |
 eh? |  |
 Maen to all. Beautiful rose to brighten up the day. |  |
 17.56 yes, finished a tough one! It's been a while |  |
 Thought it would be hard with no nine, but found it straightforward. I'm starting to dream in sudoku. |  |
 17:12 - had me stumped for a few minutes but then it all came together. |  |
 G'Maen to all Did this in 5:00 min but with guesses Off to work now on a beautiful Spring morning |  |
 Good Maen all. 8:30 with no guesses. Lovely flower. Expecting snow here in the fair state of Utah. Hooray |  |
 1) start at 23. Unique possiblities to 28.2) Note: c1=9 == c1=1 -- c2=1 == c2=69 establishes c5=6 -- c36=9.a1=9 == a1=1 -- ef1=1 == d2=1 -- d5=1 == f5=1 -- f5=6 == c5=6 forbids c36=9Depth is either 5 or 6, pending double counting of c1=9 == c1=1?3) UP to 35: Locked 4's forbid More... |  |
 OOOPS!Sets 5 or 6 at step 2 (+ 5) at step 3 = 10 or 11. Sorry! |  |
 TYPOS!!1) start at 23. Unique possiblities to 28.2) Note: c1=9 == c1=1 -- c2=1 == c2=69 establishes c5=6 -- c36=9.c1=9 == c1=1 -- ef1=1 == d2=1 -- d5=1 == f5=1 -- f5=6 == c5=6 forbids c36=9Depth is either 5 or 6, pending double counting of c1=9 == c1=1?3) UP to 35: Locked 4's More... |  |
 I am a bone head!1) start at 23. Unique possiblities to 28.2) Note: c1=9 == c1=1 -- c2=1 == c2=69 establishes c5=6 -- c36=9.c1=9 == c1=1 -- ef1=1 == d2=1 -- d5=1 == f5=1 -- f5=6 == c5=6 forbids c356=93) UP 81Depth 5 o6 6, sets 5 or 6. |  |
 How pretty - very pretty. A single pail pink rose on a bed of water. |  |
 Beautiful rose for a cloudy day. Hopefully it will rain here. |  |
 Sorry about first proof. Only read second one. Just one fc gets three eliminations which solve the puzzle. |  |
 12:17 - best for tough yet. Did not seem difficult, though. |  |
 alternative solution:1) start 23. Up to 28.2) Locked 1's forbid a12=1.c2=1 == d2=1 -- d5=1 == f5=1 -- f5=6 == c5=6 forbids c2=6.Pair 19 at c12 forbids 9 at c356.3) UP to 81depth 3, sets 6. |  |
 Very nice, Steve. Here's another appproach. I'll let you total the score.1. Unique possibilities to 27.2. Naked triplet 249 in Be2 => eliminations and i3=6. 283. fc: (d2=7)==(a2=7)--(a2=6)==(a4=6)--(c5=6)== (f5=6)--(f5=1)==(d5=1) => d2<>1 => d2=7. Fill to 81. |  |
 One step before the fill to 81: locked 18 pairs in R1 => c1=9. |  |
 Hi DJ!Very nice proof. BTW, you do not need the pair 18. I tried your proof and it works without it.It looks like depth 4, sets 7. Definately better that my first proofs... About equal to the last one I submitted. I tend to get hung up on techniques I consider 'interesting' rather than do the efficient one first. |  |
 21:03 - least guesses for ages. Felt good. Getting late now, G'meaNy to all. |  |
 I think I like your proof better, DJ. Your proof solves a cell with one step, then solves the puzzle with a fc. Versus my last proof, which solves nothing with the first two fc's before solving the puzzle with the third fc.Thus, your proof is more natural, mine seems less so. |  |
 Both proofs are a huge improvement over doing all the 'easy' eliminations, still to get stuck at 29 filled needing an fc. At least, that is the way I see it. |  |
 10'45, one very lucky guess. G'Maen, all. |  |
 I agree, Steve. My first time through, I did a lot of locked-set eliminations which didn't help at all in the final analysis. But I missed your fc. |  |
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 Could someone direct me to a loction where I can translate some of the posted proofs (like Steve's of DJ's). I simply need a translation of, for example, 'd2=7==a2=7--a2=6==a2=4--...'. Is this saying 'if d2 is 7 then a2 isn't 7 and thus a2 is 6 and so a2 isn't 4' and so on? |  |
 |  |
 That should say '...like Steve's OR DJ's...'.(I hate typos!) |  |
 Hi Sean - click on 'proofs' at the bottom of the page. GB has a website where the terminology is explained. |  |
 Well, we can all give up now. Scientists have developed a biological imaging algorithm that solves ALL Sudoku puzzles. Here is the article...http://www.news.cornell.edu/ stories/Feb06/Elser.sudoku.lg.htmlOf course it wouldn't be so much fun then! |  |
 Great puzzle today, managed to finish it before breakfast. After 36 filled forbid 9 at h5, then forbid 7 at f1. |  |
 20:21 Hi to all |  |
 Because it is raining today, and I have little else that needs to be done, I muse which of the following identical 5 sets, depth 5 solutions is easier to read. Both at 28 filled after Unique Placements only.A) c2=69 == c2=1--c1=1 ==c1=9 == c1=1 -- ef1=1 == d2=1 -- d5=1 == f5=1 -- f5=6 == More... |  |
 Pretty easy actually - nice Rose |  |
 5.33, with no guesses. |  |
 I've read the links and pages on proofs, but don't recall seeing Nishio. Can someone enlighten, please? Thanks! |  |
 20.24 with one huess...think i'm getting better but its difficult |  |
 15:27 with a guess! Good mAen all! |  |

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