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Comments and Results for 'Odd Pair Sudoku 639'

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 State Type Title Size Played Avg time Rating (#users) Yours Your best Published Expires Odd Pair Sudoku 639 9x9 640 25:40 Moderate (155) Was free until 23rd May 2021 9th May Expired Show full chart rankings for Odd Pair Sudoku 639
 Your puzzle statistics First solution time distribution Overall puzzle statistics Log in (or create a free user)to store and view your puzzle statistics Slowest 10% not shown0:00 44:36 Solution time without 'show wrong' Slowest 10% not shown0:00 44:53 Unaided first solution time Slowest 10% not shown0:00 1:04:21 Completed by 215 users Best time without any aid 4:31 by Anonymous Best time with show wrongor multiple sessions 1:59 by Cate-Lyn Average solve time with no or minor aid 29:22 Average solve time with no aid 27:13 Average difficulty rating - all players 4.6/10.0 Average difficulty rating - no aid 4.6/10.0 Average difficulty rating - minor aid 4.4/10.0 Average difficulty rating - major aid 5.2/10.0 Average difficulty rating - show wrong ormultiple sessions 4.8/10.0
Posted 9th May 2021 at 12:08
carlotes Daily subscriber Rated puzzle: Hard Completion time: 32:45
And at first it seemed like it had to be very easy!
Posted 9th May 2021 at 14:08
Penelope Daily subscriber Has started but not yet finished this puzzle
But it wasn't!
Posted 9th May 2021 at 14:41
carlotes Daily subscriber Rated puzzle: Hard Completion time: 32:45
Being honest I have finished it "al buen tuntun", that is to say,
putting a number, I think 1, without any logic. I hardly ever resort to this option.
Posted 9th May 2021 at 18:24
Elisabeth Daily subscriber Rated puzzle: Hard Best completion time: 30:04 Time on first attempt: 44:38
I did exactly the same carlotes! Having got to a certain point there seemed no logical step left so I tried a 5 which gave an impossible solution so I went for the 1 which gave the right one!!:)
Posted 9th May 2021 at 18:32
carlotes Daily subscriber Rated puzzle: Hard Completion time: 32:45
Heh heh ... I was hesitating between 1 and 5 and the first choice was the good one.
Posted 9th May 2021 at 20:13
catkinpuzzlemix Daily subscriber Completion time: 18:23
I too needed to finish by trial and error - hence the long time!
Posted 9th May 2021 at 23:01
Penelope Daily subscriber Has started but not yet finished this puzzle
I thought I'd finished by using Carlotes and Elizabeth's method but found I had 31wrong numbers!
Posted 10th May 2021 at 00:01
HollyBlue Daily subscriber Rated puzzle: Hard Best completion time: 15:23 Time on first attempt: 32:16 Used 'valid marks' Used 'auto remove'
Same for me - mostly easy then there doesn't seem to be a logical way forward. I can't find a way to solve it other than trial and error. At least I know it's not just me!
Posted 10th May 2021 at 10:41
Last edited by Elisabeth 10th May 2021 at 10:43
Elisabeth Daily subscriber Rated puzzle: Hard Best completion time: 30:04 Time on first attempt: 44:38
Can anyone tell us what the logical steps are when practically all cells are designated odd or even except the 2s and 6s down the centre?
Posted 10th May 2021 at 10:42
JoergWausW Daily subscriber Completion time: 11:20
Haven't done it yet, but usually there is a way. Sometimes very well hidden (I had the same issue a while a go with this puzzle type - I just didn't see it).
But of course there are "brains" like this "Anonymous"-guy who are beating everyone almost always in only half the time - no matter what puzzle type.
Posted 10th May 2021 at 15:07
gareth Administrator Daily subscriber Has started but not yet finished this puzzle
I can get a step-by-step solving process from my software but I'd need to know the state someone was stuck in to do that. Rest assured you only need techniques 'up to' x-wing to solve this, alongside standard odd/even deductions. :)
Posted 10th May 2021 at 15:12
JoergWausW Daily subscriber Completion time: 11:20
Now I did this puzzle (and I was warned, so I was alert for uncommon things) - there was a pencilmark five in Row 3 and 5, that only appeard in the first and last column. Deleting every other fives in colums 1 and 9 did the trick.

Or did you get stuck before?

Before, there was a column or a row (I don't remember anymore exactly, I think it was a column in the right third - column 7 maybe?) with two cells that were the only ones with a 5 and a 3. Deleting all the other possible numbers opened up something else....

Posted 10th May 2021 at 16:49
Elisabeth Daily subscriber Rated puzzle: Hard Best completion time: 30:04 Time on first attempt: 44:38
Careful scrutiny finally enabled me to find the logical steps, hurray!!! But don't ask me now how I got there:)
Posted 10th May 2021 at 20:43
HollyBlue Daily subscriber Rated puzzle: Hard Best completion time: 15:23 Time on first attempt: 32:16 Used 'valid marks' Used 'auto remove'
Thank you JoergWausW, it was those 5s that I needed to eliminate. Straight forward after that! I knew that I'd missed something but just couldn't see it.