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Country Logic Puzzle 4x4 – Sudoku style

Read the instructions carefully and then solve this Sudoku style logic puzzle by typing the country corresponding to the active (yellow) box.
Each row, column and coloured section must have exactly one country from Africa, Asia, Oceania and South America.
Countries must be alphabetical in each column (up → down) and each row (left → right)
Every country in each coloroured section must have the same number of letters according to the key
The following countries must be included: Egypt, Taiwan and Burma (this spelling for practical reasons).
Quiz by ylj
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Featured Quiz
Last updated: August 14, 2020
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First submittedAugust 14, 2020
Times taken25,647
Average score75.0%
Rating5.00
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Burma
Egypt
Guyana
Tuvalu
Chile
Nauru
Taiwan
Uganda
Fiji
Oman
Tunisia
Uruguay
Mali
Peru
Vanuatu
Vietnam
 
4 Letters
 
5 Letters
 
6 Letters
 
7 Letters
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81 Comments
Crem
+59
Level 69
Aug 14, 2020
Amazing quiz, I really like the idea, it's very creative! The rules were a little complicated, but I managed to get all of them. If Egypt, Taiwan, and Burma have to be included, maybe you could fill them in without requiring to try random tiles to get them?
ylj
+57
Level 54
Aug 14, 2020
Thanks for the feedback! True, it would be more sudoku-like to have a few pre-filled answers; but I eventually decided against it, as there were so few answers in the quiz overall – and because I rather like the undisturbed colour pattern at the start :D
LuckyCat
+1
Level 69
Jan 21, 2023
Maybe you could pre-fill one of these countries, preferably Taiwan. Just to give us a simple idea of what the quiz is like. I also really like this idea! (My own quizzes are pretty cool . . .)
Sifhraven
+3
Level 73
Apr 9, 2024
I definitely would not prefill them
PeregrineFalcon
+16
Level 77
Jan 24, 2022
You actually don't need to guess
kiwiquizzer
+2
Level 68
Jul 25, 2021
All good. Nice challenge. Thanks.
yapok
+2
Level 78
Jul 25, 2021
Loved it!
scambigol
+2
Level 78
Oct 1, 2021
Great quiz!
frognbuff
+8
Level 87
Oct 28, 2021
Nice quiz, was a little confused which quadrant had countries with 4, 5, 6, and 7 letters as I interpreted it to mean the top left would be the 4 letter countries and not the bottom left.
AbiA
+3
Level 86
Nov 29, 2022
Yeah, if you are looking at it on a phone you don’t see the key unless you scroll across but actually you have enough time to work it out so to make it a little more challenging you could omit the key altogether. Great quiz thanks.
Elboy
+4
Level 72
Oct 28, 2021
Brilliant quiz!

Reading the instructions may seems tedious but once it's done, the quiz reveals great. Nominated!

iuvas
+1
Level 97
Oct 28, 2021
really great quiz! excellent work. nominated
stylus
+6
Level 78
Oct 28, 2021
i think you could honestly do with less time - i was able to brute force where egypt taiwan and burma go just from trying them all, and then the rest is markedly easier, so perhaps lower the time allowance to stop people doing this. really creative idea though, amazing work! nominated
wiifly
+6
Level 61
Sep 1, 2022
The point is you don’t guess and check. You can, but the idea is there is only one place each country can go, and the rules let you know where.
chunkeeguy
+1
Level 79
Oct 28, 2021
Loved it. Nominated
Kokoanka
+2
Level 82
Jan 24, 2022
Shouldn't Uganda and vanuatu switch places? Right now they aren't in alphabetical order the same way as the other boxes
iku08
+1
Level 50
Jan 24, 2022
good quiz! Would be a little nice to not have to guess which 1 country was put in the quiz with multiple countries in a particular continent that have a certain letter length as well. (Angola, Zambia, Gambia, Guinea, Uganda, Rwanda, Malawi, etc.; Nigeria, Senegal, Algeria, Eritrea, Somalia, Namibia, Morocco, Lesotho, etc. goes for a while), maybe just fill in a box where just one of these is typed? I'm glad we at least got 3 of the countries to know to put in there
jmellor13
+13
Level 67
Jan 24, 2022
You don't need to do that guessing. The rows and columns are alphabetical. So once you get to the African country with six letters, you know it comes after Tu (because Tuvalu is filled in above it). So it's either Uganda or Zambia. It can't be Zambia, because there's only one country alphabetically after Zambia (Zimbabwe), and you need at least two countries below that square to complete the yellow section. So Uganda is the only country that fits. Once you figure out where Burma, Taiwan, and Egypt go, you can do the rest with very little guessing (maybe even with no guessing, but I definitely took some guesses).
JWatson24
+1
Level 71
Apr 7, 2022
Fun quiz! Nominated :)
GelEGuy
+1
Level 63
Apr 7, 2022
Very fun! Nice work!
QuizzyOne
+1
Level 74
Aug 7, 2022
Sounded tricky at first, but fun to do. More please 😊
Jerry928
+2
Level 76
Nov 16, 2022
Awesome, nominated. Perhaps you could take out the gaps between each coloured block to make the columns and rows a bit more obvious.
GrammarBeane1
+1
Level 83
Nov 28, 2022
This quiz is awesome! I would love to see more of these in the future!
IsleAuHaulte
+1
Level 91
Nov 28, 2022
I will always say Burma, but most people here won't even think far enough to get the starting point of the quiz, because the name Burma is invariably unused as an answer on featured quizzes.
NMI
+1
Level 88
Nov 28, 2022
Nice quiz, thanks, @ylj. Yay, hooray! I solved it on my first attempt with plenty of time to spare. That almost never happens when the instructions are a bit involved.
mungomatic
+1
Level 84
Nov 29, 2022
That was an excellent quiz! Thank you very much!
khp29
+1
Level 73
Nov 29, 2022
I loved this quiz! Please make more, it is one of my all time favourites!
tobygh
+1
Level 79
Nov 29, 2022
Really liked this quiz. I'd love to se more like it.
DiscoBayGolfer
+1
Level 79
Nov 29, 2022
Great job, really clever!
KoljiVriVoda
+1
Level 79
Nov 29, 2022
I love this one. More please :)
DonTheLamplighter
+2
Level 86
Nov 29, 2022
Smashing idea for a quiz!
buck1017
+1
Level 78
Nov 29, 2022
Took a minute to understand the rules, but once i had it, it was great. Got hung up on Tunisia and Mali but the rest came pretty easily.
mrzli86
+1
Level 92
Nov 29, 2022
more
ItzIngenious
+2
Level 66
Nov 29, 2022
Much easier than I expected, but it was still really fun all the same. Great quiz!
daxota
+1
Level 94
Nov 29, 2022
Great quiz
sumguy
+1
Level 86
Nov 29, 2022
Not sure why you had to give away Egypt and Taiwan, but the note about Burma was necessary.
Azerk
+3
Level 65
Dec 7, 2022
It's basically their way of giving you a few answers at the start (like regular Sudoku) so the quiz isn't ambiguous. When done properly after getting these 3 in, you don't have to guess any answers.
OfficerDibble
+1
Level 84
Dec 1, 2022
Excellent
SuperT
+1
Level 71
Dec 1, 2022
Really enjoyed this quiz!
JudgeRudy
+2
Level 67
Dec 2, 2022
Great quiz. After understanding the gist, my brain found it easiest to move around and tackle Oceania and South America first and narrow the alphabetical domain for Africa and Asia. Finished off with Taiwan and Tunisia with only about a minute left.
jordibabot
+2
Level 67
Dec 5, 2022
Half of the time trying countries from Europe :_)
FreeStater
+1
Level 78
Dec 6, 2022
Got it in 6:44. Great job and great idea!
cocachiantos
+1
Level 72
Dec 8, 2022
10:58 left 😎
3nchiladas
+1
Level 70
Dec 11, 2022
Great, but I think you need to shorten the time. By at least 5 minutes... really fun quiz but 60% getting the whole thing makes it seem to easy
Anthologies
+1
Level 58
Jan 21, 2023
Great puzzle. Creative and fun. I wished I had read the directions fully and seen your note about Burma. :)
mal
+1
Level 64
Jan 21, 2023
i enjoyed doing that puzzle- thank you
Newroadgirl
+1
Level 68
Jan 21, 2023
Absolutely brilliant, thank you.

Are you able to make another one?

SorenReview
+1
Level 50
Jan 21, 2023
Got it in just under 10 minutes (9:55)
rodro167
+1
Level 68
Jan 21, 2023
My favorite quiz
JackintheBox
+1
Level 80
Jan 21, 2023
Got all with 12:15 remaining (3:45), great quiz!!
Cosmic
+1
Level 77
Jan 21, 2023
Instructions were too complicated. Not a fan
Tim000w
+1
Level 72
Jan 21, 2023
It’s clear that a lot of people just try countries and especially the three given ones, since they are the top three answers. I feel sorry for those people because it’s a lot more fun to only enter an answer when you’re absolutely sure. I only got taiwan as the second to last answer on my solving path. Although I remembered a bit late that it was given, so I might have gotten it sooner otherwise, but definitely not as the third answer.

For the quizmaster, you might consider adding a fifth rule that guessing isn’t necessary.

Sifhraven
+1
Level 73
Apr 9, 2024
I had totally forgotten the remark about taiwan, hence I missed that country ( and therefore the one below it, I thought of 2 countries that would fit there but were not after t)
HighFidelity
+1
Level 58
Jan 22, 2023
This was fun. The only issue I had was when you only have one country left, the cell is yellow and you can't check how many letters it was supposed to have. Lucky for me my last country was from South America :)
scangemi
+2
Level 60
Jan 22, 2023
The remaining country will have the same number of letters as the other three countries in its quadrant.
greggyboy
+1
Level 63
Jan 22, 2023
You might know it as Myanmar, but it will always be Burma to me.
ShayBealer
+1
Level 84
Jan 23, 2023
J. Peterman, is that you?
RedStar12345
+1
Level 53
Jan 22, 2023
Very interesting quizz. It took me a while, but I completed it. Thank you.
Jibe
+1
Level 62
Jan 23, 2023
Brilliant!

very challenging.

Thanks a lot

Renton
+1
Level 28
Jan 23, 2023
loved this quiz! got it first try in 9:09... did pause once though to take a call...

Great idea!

PHG1960
+1
Level 69
Jan 23, 2023
We accept Burma now? It's Myanmar!
Sifhraven
+1
Level 73
Apr 9, 2024
read the notes
minnakronberg
+1
Level 67
Jan 23, 2023
This was pretty hard and different. Thanks for making it. I was surprised I completed the grid. I'll have to show it to my friend who is obsessed with Sudoku.
Lovegeog
+1
Level 58
Jan 23, 2023
tough! Got it!
avargas009
+1
Level 45
Jan 24, 2023
this was a great format! I got tripped up because Burma is not a country haha but either way it was fun
sonnysulouff
+1
Level 42
Jan 24, 2023
This was awesome, please make more of these!
ritan
+1
Level 47
Jan 26, 2023
Excellent quiz, loved it! More of these, please :)
Ferbin
+1
Level 78
Mar 7, 2023
5/5, great quiz.
nporter
+1
Level 66
Mar 18, 2023
Probably the most fun quiz I've done on this site
ggem
+1
Level 78
Jun 7, 2023
Very clever. I appreciated the fact that there was a unique solution (no need to guess)... i strongly suggest to solve it with paper and pencil, for a real geo-logic experience!
ZeldaQuizzer
+1
Level 61
Jun 7, 2023
Love this idea! It took me 10 minutes. I hate Africa SO much.
Nikomeow
+2
Level 53
Jun 25, 2023
possibly the smartest quiz on this website!!! gg!!!
MertFromTurkey
+1
Level 71
Dec 19, 2023
The smartest quiz that i have ever seen, thank you.
Lwadrian
+1
Level 58
Jan 9, 2024
Good quiz but if you were to make it again I wouldn't use South America or Oceania. I got half the boxes by just easily typing in 4-5-6-7 letter oceanic and SA countries in the boxes until it was right.
Sifhraven
+1
Level 73
Apr 9, 2024
I don't see the logic in comments like this. You think it is less fun because you could cheat. But then why would you cheat?
onelargeboulder
+1
Level 50
Mar 13, 2024
Great quiz. Had a lot of fun with it
Frell
+1
Level 64
Mar 26, 2024
Really good, very hard! Really had to wrack my brain for this one.
Sifhraven
+1
Level 73
Apr 9, 2024
Staring at the last two for nearly 6 minutes... (the middle two of the 3rd row) For one square I had found 2 solutions, but they didn't take it. and the name of the country of the other box crossed my mind but somehow I think I thought it was a different number of letters ( 5 instead of 6 I believe).

Quite the work out, I think the time pressure (not that it was too short!) got to me and stopped me from thinking quietly about the last two. I really should have gotten those. But got too hasty

SpodXVintader
+1
Level 51
Jun 17, 2024
Idk if someone already said it, but : Senegal, Somalia and Tanzania work also for C3 case
Carry
+1
Level 63
Mar 25, 2025
Columns are in alphabetical order left to right and up to down so they would not work. Tanzania because of its 8 letters.
stylus
+1
Level 78
Jan 16, 2025
it feels like this quiz could be improved with whammies, to stop brute-force guess-and-checking? even just for Egypt, Taiwan, Burma as that's the first way in for solvers
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