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Comments and Results for 'Killer Sudoku-8 123'

State	Type	Title	Size	Played	Avg time	Rating (#users)	Yours	Your best	Published	Expires
		Killer Sudoku-8 123	8x8	683	14:01	Mild (187)	Was free until 19th Sep 2020		5th Sep	Expired
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2 comments (Add new comment)

Posted 5th Sep 2020 at 00:42
Last edited by SlowBurn 5th Sep 2020 at 00:43

SlowBurn Completion time: 9:59 Used 'check puzzle' when incorrect

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It might be possible that there is an alternative solution. On the two right most columns, 7 & 8 at the top row can be either 7 & 8 or 8 & 7 (with associated changes). I know it is more likely that I've missed a constrain somewhere.

Posted 5th Sep 2020 at 05:33

SCBilly Rated puzzle: Easy Completion time: 17:08 Used 'check puzzle' when incorrect

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The group of 5 cells in the upper right corner contains a "1" (and a "5") in the third row from the top. Thus, the rightmost cell in the 2nd row cannot contain a "1" and must contain a "2". Because the top two cells in the rightmost column must add up to "9", the upper-right cell must be a "7" and not an "8".

So, the top must be "8 7" and the bottom must be "7 8".

(I was confused for a while by the same thing.)

So, the solution is unique.

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Key

• A yellow/light blue highlight in the time distribution charts highlights your time, where relevant.
• Rating scores out of 10.0 show the average difficulty rating chosen by users, where 1.0 is "Easy" and 10.0 is "Hard".
• If a puzzle is opened more than once, including by loading from a saved position, then this is potentially a significant aid so it is listed as being completed with 'multiple sessions' for the purpose of the best time/average rating displays above.
• Minor aid is defined as no more than one use of 'Check solution' when incomplete and/or no more than one use of 'Check solution' when wrong; and/or using highlighting aids (show repeated digits, show broken inequalities and show valid/invalid placements [slitherlink] only). Major aid is any and all other use of the solving aids except for 'show wrong'.

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