gwdobbs Rated puzzle: ModerateCompletion time: 27:08Used 'auto remove' Used 'show invalid' Used 'show wrong moves'
Is it just me or do we always have to make guesses in Hitori puzzles? I think I must be missing something.
Posted 30th Oct 2016 at 16:43 Last edited by gareth 30th Oct 2016 at 16:44
gareth Administrator Daily subscriber Has started but not yet finished this puzzle
Here's a couple of deductions you probably missed, that are useful for anyone learning Hitori:
* At the bottom-right, notice the 4-12-4 in the penultimate column. If the top 4 was white, it would create a sealed off area at the bottom-right with the 9s. Two touching numbers in a corner are often useful. (Here the pattern is that the bottom-right 4 can't be black, but we can then extend this back to the fact that the other 4s in the penultimate column can't be white, which gives us two shaded numbers right away)
* In the sixth and seventh columns, the 12 and 1 touch each other across columns twice. So in each case one must be white, one black. This means the 12 higher up the sixth column must be shaded.
Sorry: You must log in (create a free user) in order to be able to post comments on this puzzle.
You can however view other players' statistics and comments in the tables above.
Post comment
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'.
Last edited by gareth 30th Oct 2016 at 16:44
* At the bottom-right, notice the 4-12-4 in the penultimate column. If the top 4 was white, it would create a sealed off area at the bottom-right with the 9s. Two touching numbers in a corner are often useful. (Here the pattern is that the bottom-right 4 can't be black, but we can then extend this back to the fact that the other 4s in the penultimate column can't be white, which gives us two shaded numbers right away)
* In the sixth and seventh columns, the 12 and 1 touch each other across columns twice. So in each case one must be white, one black. This means the 12 higher up the sixth column must be shaded.
You can however view other players' statistics and comments in the tables above.