Kuromasu
Free Game
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About Kuromasu
If you like the challenge of Sudoku or Shikaku, you will love Kuromasu!
Kuromasu (黒どこ Kurodoko) is a number logic puzzle created by Nikoli, the Japanese publisher that made Sudoku popular. It is also known as 'Where Is Black Cells' and 'Range', is almost similar to other logic puzzle like Sudoku, Shikaku or Kakuro.
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Kuromasu is a very interesting puzzle game. Just like Sudoku, new players may find it challenging and intimidating. Once you know the rules, it can be fun and addictive, perfect for exercising your brain power and killing time. If you love this game, we hope that you will help promote Kuromasu and share this app with your friends, especially those Sudoku lovers. We hope this puzzle game will be as popular as Sudoku in the future. Thank you for your support.
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The objective of this game is to find the black cells.
The rules:
• Each number on the board represents the number of blue cells that can be seen from that cell, including itself.
• Black cell blocks the view.
• Numbered cells may not be black.
• No two black cells may be horizontally or vertically adjacent.
• All the blue cells must be connected horizontally or vertically.
Each puzzle has only a unique solution. No guessing nor hints are required to complete a puzzle.
Features:
• 4 board sizes: 5x5, 7x7, 9x9, 9x12
• 400 puzzles (100 per board size)
• Save progress
• Minimalist design
• Redo, undo and restart
• Soothing Japanese music 'Rokudan' in background
• Daily free hint
Kuromasu (黒どこ Kurodoko) is a number logic puzzle created by Nikoli, the Japanese publisher that made Sudoku popular. It is also known as 'Where Is Black Cells' and 'Range', is almost similar to other logic puzzle like Sudoku, Shikaku or Kakuro.
********************************************************************************************************
Kuromasu is a very interesting puzzle game. Just like Sudoku, new players may find it challenging and intimidating. Once you know the rules, it can be fun and addictive, perfect for exercising your brain power and killing time. If you love this game, we hope that you will help promote Kuromasu and share this app with your friends, especially those Sudoku lovers. We hope this puzzle game will be as popular as Sudoku in the future. Thank you for your support.
********************************************************************************************************
The objective of this game is to find the black cells.
The rules:
• Each number on the board represents the number of blue cells that can be seen from that cell, including itself.
• Black cell blocks the view.
• Numbered cells may not be black.
• No two black cells may be horizontally or vertically adjacent.
• All the blue cells must be connected horizontally or vertically.
Each puzzle has only a unique solution. No guessing nor hints are required to complete a puzzle.
Features:
• 4 board sizes: 5x5, 7x7, 9x9, 9x12
• 400 puzzles (100 per board size)
• Save progress
• Minimalist design
• Redo, undo and restart
• Soothing Japanese music 'Rokudan' in background
• Daily free hint
All Application Badges
Free
downl.
downl.
Android
4.0.3+
4.0.3+
Bug
buster
buster
Android game
Game History & Updates
What's Changed
v1.0.6
- Fixed display issue for 9x12 board
v1.0.5
- Puzzle title for 9x12 board partially covered on some phone models - fixed
v1.0.4
- Puzzle 7x7 #77 bug - fixed
- Level not shown as completed if reset same level after complete - fixed
- Background music playing issue - fixed
- Reset level confirmation
- User can choose to keep revealed hint if reset level
v1.0.3
- Fixed 5x5 Level 52 problem
- Check no isolated blue cell in every move
v1.0.6
- Fixed display issue for 9x12 board
v1.0.5
- Puzzle title for 9x12 board partially covered on some phone models - fixed
v1.0.4
- Puzzle 7x7 #77 bug - fixed
- Level not shown as completed if reset same level after complete - fixed
- Background music playing issue - fixed
- Reset level confirmation
- User can choose to keep revealed hint if reset level
v1.0.3
- Fixed 5x5 Level 52 problem
- Check no isolated blue cell in every move
More downloads Kuromasu reached 10 000 - 50 000 downloads
Version update Kuromasu was updated to version 1.0.6
More downloads Kuromasu reached 5 000 - 10 000 downloads
What are users saying about Kuromasu
U
by U####:
by U####:
The only thing bad is that you can't save an unfinished game for later. And I had to Google the instructions. But it's addictive
U
by U####:
by U####:
Definitely one of those games you should play when you're frustrated after being constantly defeated in other games. Stress-relieving!
U
by U####:
by U####:
Very well executed! Minor glitch where clicking next puzzle after an ad returns you to a previously solved level.
J
by J####:
by J####:
This rendition of kuromasu is well organized and very well laid out. I have found it to be superior to a different kuromasu app that I downloaded and used for a month or two, and this one also offers a lot more games than that one did too.
U
by U####:
by U####:
When checking for conditions, please check for illegal configuration condition then completed configuration condition, not the other way around
U
by U####:
by U####:
Great pastime! Nice simple graphics that don't get in the way of play. Catchy, relaxing music. Much like 'paint- duko' puzzles in game books. Very enjoyable.
U
by U####:
by U####:
Fun and addicting! I have spent hours solving these. Great game! I hope someday this game has a random puzzle mode because I dont solve puzzles I have already solved.
U
by U####:
by U####:
Love the game but can't play about one third of all puzzles because the game crashes every time I try to access them.
J
by J####:
by J####:
Fun, but can be a bit tricky to get the hang of. A beautiful minimalist design, with simple icons. A great app.
U
by U####:
by U####:
Wish there were timers or leadership board
O
by O####:
by O####:
It's a nice puzzle to start or end my day. Something easy to do while waiting.
U
by U####:
by U####:
Great Game! I wish there were more than 400 individual games! Make larger games!
P
by P####:
by P####:
Enjoyable puzzle with nice graphics and relaxing music.
U
by U####:
by U####:
Great game. Needs more puzzles. Like, a lot more.
U
by U####:
by U####:
Nice soothing logical game
U
by U####:
by U####:
Nice logic game!
U
by U####:
by U####:
Good version of Kuromasu
U
by U####:
by U####:
Great brain training
O
by O####:
by O####:
I really liked playing it for the past week, it is very relaxing and easy. It's so relaxing that I always get sleepy after playing! Hehe. Once you get the hang of it, some levels are still hard. It's funny though, because I found level 100 on 9×12 easier than 60 something.The music is a bit odd, especially with the sound effects of placing a tile. There are ads, and they only appear after you finish a level or click the back button. There were more levels, there is nothing left, so it's gonna be removed.
N
by N####:
by N####:
Great puzzles to pass the time. Early levels are not super hard but later ones definitely get the gears grinding. I just wish there was a timer for each puzzle so you could see how long it takes you.
N
by N####:
by N####:
This game is really fun, but I have one suggestion and that is to have some visual notification when a number cells condition is successfully fulfilled. It shows you when a call can't see enough, but I'd also like or to show when a number call can see that amount (not more).
N
by N####:
by N####:
The game credited as complete a grid with two adjacent black cells... but only once
N
by N####:
by N####:
Wish there were timers or leadership board
N
by N####:
by N####:
Funny but too easy and each level is not getting harder
A
by A####:
by A####:
Did not get it! Uninstalled
N
by N####:
by N####:
I want more levels!
N
by N####:
by N####:
I never review apps, but I just love this one! Once you figure out how to play it, it is the most relaxing game. I've played through all the puzzles twice, once with hints and once without. I would love if you added more puzzles! Thanks for making such a simple, yet enjoyable game.
N
by N####:
by N####:
It crashes whenever I try to revisit a level I tried previously but did not solve. No mechanism to send feedback within the app. It's terrific when it works.
S
by S####:
by S####:
watched the tut 4 times, thought I got it, but not much so, spent more than 30mins for the first 5x5, I must be stupid T_T this game is gold lol
O
by O####:
by O####:
Makes you think - love it!
N
by N####:
by N####:
Addictive but good for kids.
N
by N####:
by N####:
Great!
N
by N####:
by N####:
Loved it
N
by N####:
by N####:
The tutorial is complicated and hard to follow, with gameplay being extremely challenging from the start, not giving a chance to get used to gameplay
G
by G####:
by G####:
Crashes when i try to open a level
K
by K####:
by K####:
One could say it's similar to Sudoku, in that there are restrictions to how tiles are used, but it is actually quite different, I love playing it as a way to unwind and distract myself, great game!
A
by A####:
by A####:
It's more interesting than Sudoku! I love it very much !!
E
by E####:
by E####:
The best new puzzler I have seen in months. Just one request: more puzzles, please!
K
by K####:
by K####:
Took several days to do them all
by X####:
But needs a few quality of life improvements. Too many button presses required to start playing (go to last level on the launch page would be nice). Also missing a clear/restart if you've made a mistake that carries too far.