RosimInc's 2025 Nonogram Café


Announcements

2025-01-07 - New code update!

I have updated the game with many improvements! See this post for details!

2025-01-02 - 2025 Edition Begins!

Hello everyone!
First of all Happy New Year to everyone, I wish you all a lovely 2025 <3

Back in 2020, I made the first version of the Nonogram Café, it was a lot of fun but it was quite tedious to create and play the puzzles.
A week ago I started looking at different alternatives online, and finally gave up, and made my own creator and player instead.
So I officially present to you my fully online, fully interactive nonogram player! ^^
Which comes with a nonogram creator, naturally. Look below for the link to it!

I will post a new nonogram weekly, leading to a giveaway each. Giveaways will end one week after the next for fun all year round!

Now you get to play; let's get cracking!™ ;)


Weekly Puzzles

The links below contain everything you need to access the giveaways I made.

Week Puzzle link (level req.) Giveaway prize End date
Week 10 12x12 puzzle (level 0) Dead Age 2025-03-10 23:59 EST
Week 11 15x20 puzzle (level 0) Deadlight 2025-03-17 23:59 EST
Week 12 10x10 puzzle (level 0) Go Home Dinosaurs! 2025-03-23 23:59 EST
Week 13 20x15 puzzle (level 0) The Talos Principle 2025-03-30 23:59 EST

Bonus Puzzles

Creator Puzzle link (level req.) Giveaway prize End date
Ellendyl 15x15 puzzle (level 3) Queen's Quest 4: Sacred Truce 2025-03-07 7:00 EST

More Info

Infos on the puzzles and creator here.
Past puzzles here

2 months ago*

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finished all bonus puzzles up to this point!

1 week ago
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Bump for nonos!

1 week ago
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Mayanaise Flipping Death 2025-02-25 3:59 EST
Ellendyl Dreamscaper 2025-02-28 7:30 EST
Done these extras!

1 week ago
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Bump for lovely nonograms!

1 week ago
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Oh, I actually entered something!

1 week ago
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Bump!

1 week ago
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Bump for bonuses solved :p

1 week ago
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Bump :)

5 days ago
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Hope life is ok, ros 🙂

4 days ago
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I'm still alive I swear!! :D
I have started a new project at work and it's been keeping me busy and tired haha, my wife and I have been playing Farm Together 2 on evenings to relax and I was procrastinating on making the new puzzles ^^

3 days ago
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I'm glad to hear that you're doing well (apart from being busy at work)

1 day ago
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Weeks 12 and 13 added!

12 hours left to the Week 9 puzzle!

3 days ago
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i just realized i haven't finished week 12 puzzle... solved week 12 and 13!
thanks for the nonogram as always :)

3 days ago
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Bonus Puzzle
15 x 15 puzzle for Queen's Quest 4: Sacred Truce. Level 3+. Ends Friday (3/7) @ 07:00 EST.

3 days ago
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Thanks a lot, featured on the main post! :)

3 days ago
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Solved, thanks for the nonogram!

2 days ago
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Bumping this. Big thanks to Vampus for teaching me how to play these puzzles.

3 days ago
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BU|\/|P

3 days ago
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Bump for new nonograms. Thank you.

3 days ago
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Week 12-13 and Queen's Quest 4: Sacred Truce done

3 days ago
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Week 13 bumpity! ^_^

3 days ago
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Queen's Quest 4: Sacred Truce bumpity! ^_^

3 days ago
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Week 13 bump!

3 days ago
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Bump for NONOGRAMS!

2 days ago
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Bump for new puzzles!

2 days ago
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As a fellow enjoyer of Nonograms and especially as someone who coded some, what's your opinion on this nonogram? Valid or invalid?

X 1 1 1 1
1,1 ? ? ? ?
2 ? ? ? ?

It has an obvious unique solution, but a lot of sites say it hasn't as it can essentially only be found by the "guess a spot and prove it impossible" method, which feels wrong as soon as it's not this obvious

2 days ago*
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I see nothing wrong with this one, only one solution, no need to guess.

2 days ago
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Well, this is the trivial obvious case, but If something like this happened in a big one, none of the default methods of solving/verifying work.
There is no row or column where you can generate a black or white without the context of the other rows/columns and from what I've seen on multiple sites is that that is not allowed. That's what I meant with guessing: a naive implementation of a solution would checking something like "What would happen if the bottom left was black... oh, I would have to color both boxes in the second column", and in theory this look ahead could get big.

Not saying that it is invalid, just that a lot of sites think it is. I'm fairly certain quite a few of the magazines I bought with nonograms for penciling in use stuff like this.

Another version of this "Do you allow what I call guessing" would be a nonogram starting like this:

X 3,... 2,... 3,... 2,... 3,... 2,... 3,...
2 ? ? ? ? ? ? ?
3 ? ? ? ? ? ? ?
2 ? ? ? ? ? ? ?
... ... ... ... ... ... ... ...

You know that the corners can't be colored in because that would mean that row 3 contains a conflict. But do you implement something like that or can this only happen in non-unique solutions or maybe they can only be unique if there are other ways to reason these blocks
with the numbers I left out, ...

1 day ago
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This reminds me a lot about discussions on the topic of Minesweeper where a lot of people (myself included) feel that chance/luck has no place in the game, but by default a game of Minesweeper is a game of chance. That's where the "No Guessing" ruleset of Minesweeper was created, to satisfy the need for full reliance on logic instead of chance.

1 day ago
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By the way, regarding Minesweeper, this is stupidity in a game where field analysis and calculation are necessary, there are situations when you need to choose a cell with a 50/50 chance, it is even more absurd when it is the last 2 cells.

1 day ago
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can you make a nonogram of what we are talking about? to understand more precisely what we are talking about

1 day ago
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I thought about it a bit, I think I made a bad nonogram that has a unique solution but none of the usual rules that don't look ahead/ at multiple rows and columns work. It's ugly and still kind of easy to "guess" but should show the problem

View attached image.
1 day ago
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interesting puzzle, my approach didn't work right away, but I immediately realized that the key ones are three threes in a row, and after going through the options in my head a little, the solution was quickly found, but it's a small puzzle, I don't know how 25 by 25 would be solved in the same format.

15 hours ago
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No need to guess ? How come ? What and why is the first move. I dont see one with guessing.
edit:
oh, i think i got it

2 hours ago*
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For that example the first row (1,1) has to be in the corners and the 2nd in the middle, it's the only solution that fits.
That being said, i didn't understand what SilentGuy ment at first, so my comment is not that important.

Btw i agree with the implementation to make these types "invalid" even though they are not because they are just not that fun to me.

1 hour ago
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Interesting thought experiment :) I personally am in the camp of do-not-ask-me-to-guess-a-spot-even-if-the-solution-ends-up-unique.

Sure, small puzzles like your example are not an issue, but the complexity can scale fast. It's also why I grudgingly do not like puzzles such as Lexica because for bigger puzzles, you either need a huge capacity for thinking ahead (not me), or you'd have to do an educated guess on a spot and work from there (defeats the purpose of a logic puzzle for me). I like the concept though, hence "grudgingly".

1 day ago
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I know that when I was doing research on valid types of nonograms I encountered those, and saw different opinions on them as well.
For me personally, I always tend to abandon a puzzle when there is some type of backtracking/guessing/forward-visualizing to them because I don't have a very good visual memory. I wouldn't say that this kind of puzzle is invalid though, just that they're a bit more advanced solving-wise.

Now when it comes to the algorithm I use to create and validate nonograms, it would consider your example as invalid, because I make conclusions out of checking individual rows/columns at a time.
For example, if a row has 5 cells and the hint is 2 1, I get all possible combinations:
<X X _ X _> <X X _ _ X> <_ X X _ X>
Then from those combinations I evaluate if a certain position always has X or _ and mark it
With that logic, I conclude that the 2nd cell is filled.
Using that logic only, and simplifying the possibilities according to markings, I can find the solution or determine if a puzzle is 'invalid'.
However, a valid puzzle like yours will be flagged as invalid because the solving algorithm I used cannot think ahead.

Doing it that way also ensures that puzzles I generate are not overly complicated, so that they can always be accessible to more casual solvers (granted, the 25x25 grids can be quite daunting for newcomers but still ^^)

I like the examples you gave because they simplify the concept a lot, I always have trouble visualizing those kinds of problems haha
And the logic behind them is quite cool, I think that those valid-with-guessing puzzles can bring up the challenge even higher (too high for me though!)

1 day ago
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W13 and QQ4 bonus puzzles bump!

1 day ago
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half the time when i right click to x a square, the x briefly flashes and disappears
i need to right click a few times, between 2 and 7 times even, for the x to permanently register
bug??

1 day ago
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i think i realized the problem, i may be moving my mouse a couple pixels each time i right click? even one pixel movement deactivates the x, like it thinks i want to hold and drag... but placing multiple x in a row is a rare input for me, so i think the hold and drag should only be enabled for lmb?

1 day ago
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Doesn't happen to me. Even if i move my mouse while holding down right click the X stays, if i then move it to another cell it fills that one too while keeping everything before filled in too. Works perfectly, is it possible that your mouse is faulty?

1 day ago
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i checked a mouse tester site online and i think my rmb has contact issues... thanks for the help XD

1 day ago
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Glad i could help 👍

1 day ago
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Bump for week 12, 13 and bonus solved!

1 day ago
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