Japanese logic puzzles are a huge family of grid-based puzzles shaped by magazines, publishers and puzzle makers in Japan. Some, like Sudoku, Kakuro and Nonogram, are known worldwide. Others, like Nurikabe, Masyu, Hashi and Akari, are favourites among solvers who enjoy pure deduction.
This roundup keeps things deliberately brief. Instead of going deep on rules or strategy, it gives you a fast map of the puzzle landscape: what each puzzle is about, which ones you can play here, and how to choose a next puzzle based on the kind of logic you enjoy.
The article uses the exact topic while also covering related terms such as Sudoku, Picross, Nikoli-style puzzles and grid logic puzzles.
The list mixes famous Japanese puzzles, Nikoli-style puzzle genres and close pencil-puzzle relatives.
Linked cards open the matching Logic Puzzles Online game page in the current language.
Japanese logic puzzles list
The summaries below are short by design. Use them to scan the main families of Japanese logic puzzles, then open any linked game when you want to try one.
Number-grid Japanese logic puzzles
Number-grid Japanese logic puzzles use digits, candidates, sums, inequalities, visibility clues or ordered values inside a structured grid. This group targets Japanese number puzzles and Nikoli-style arithmetic logic puzzles such as Sudoku, Kakuro, Futoshiki, KenKen, Skyscrapers and related Sudoku variants.
Sudoku
Fill a grid with digits so every row, column and region follows the no-repeat rule.
Play onlineKiller Sudoku
Solve Sudoku with cage totals, using arithmetic clues as well as row and column logic.
Play onlineKakuro
Fill crossing runs with digits that add to each clue total without repeating inside a run.
Play onlineFutoshiki
Place numbers while obeying greater-than and less-than signs between neighbouring cells.
Play onlineKenKen
Use arithmetic cage clues to decide which numbers can fit in each row, column and region.
Play onlineCalcudoku
Use arithmetic cage clues to decide which numbers can fit in each row, column and region.
No game yetSuko
Place a small set of digits so the marked circles and squares reach their target totals.
Play onlineSuguru
Fill a grid with digits so every row, column and region follows the no-repeat rule.
Play onlineHidato
Create a chain of consecutive numbers, usually with every next number touching the previous one.
Play onlineSkyscrapers
Arrange building heights so the side clues show how many towers are visible.
Play onlineThermometers
Fill digits so values rise along each thermometer while the grid rules still hold.
Play onlineBinary
Fill cells with two symbols while balancing each row and column and avoiding long repeats.
Play onlineStr8ts
Place digits in straight consecutive runs while using row and column restrictions.
No game yetArrow Sudoku
A Sudoku variant that adds extra clue types on top of the familiar 9x9 no-repeat grid.
No game yetSandwich Sudoku
A Sudoku variant that adds extra clue types on top of the familiar 9x9 no-repeat grid.
No game yetKropki Sudoku
A Sudoku variant that adds extra clue types on top of the familiar 9x9 no-repeat grid.
No game yetShading and painting Japanese logic puzzles
Shading and painting Japanese logic puzzles are visual deduction puzzles where the answer emerges through black cells, painted regions, islands, walls, lights or hidden pictures. This section covers Picross and Nonogram-style puzzles as well as Nikoli-style grid puzzles like Nurikabe, Hitori, Akari, Heyawake and Tapa.
Nonogram / Picross
Use row and column clues to paint cells and reveal a hidden pixel picture.
Play onlineNurikabe
Separate white islands with a connected wall while matching each numbered region clue.
Play onlineHitori
Shade repeated numbers until every row and column has no duplicate visible values.
Play onlineKuromasu
Shade cells so numbered squares can see exactly the required number of white cells.
Play onlineHeyawake
Shade cells inside rooms while respecting room boundaries, adjacency rules and row or column limits.
Play onlineAkari
Place lights so every open cell is illuminated and numbered walls get the right count.
Play onlineTapa
Use numbered clues to decide which surrounding cells must be shaded or left open.
Play onlineNorinori
Shade domino-like pairs inside regions while preventing oversized shaded groups.
Play onlineLITS
Shade tetromino shapes in regions while keeping the shaded area connected.
Play onlineFillomino
Divide the grid into numbered areas whose size matches the number inside them.
Play onlineMosaic
Paint cells around each clue so the local count matches the number shown.
Play onlineYin-Yang
Colour cells into two connected groups while avoiding forbidden 2x2 blocks.
Play onlineNurimisaki
Use numbered clues to decide which surrounding cells must be shaded or left open.
No game yetCave / Bag
Separate white islands with a connected wall while matching each numbered region clue.
No game yetShakashaka
Use numbered clues to decide which surrounding cells must be shaded or left open.
No game yetLine, loop and connection Japanese logic puzzles
Line, loop and connection Japanese logic puzzles replace filled numbers with drawn structure: loops, routes, bridge networks, symmetry regions or non-crossing links. They are the right category for solvers searching for Japanese loop puzzles, path puzzles, connection puzzles and Nikoli-style drawing puzzles such as Slitherlink, Masyu, Hashi and Numberlink.
Slitherlink
Draw one loop around cell edges so each clue sees the correct number of used edges.
Play onlineMasyu
Draw a single loop through pearl clues, following turn and straight-line rules.
Play onlineYajilin
Draw a loop while using arrow clues and shaded blocks to control its route.
Play onlineNumberlink
Connect matching numbers or symbols with paths that do not cross or share cells.
Play onlineHashi
Connect numbered islands with horizontal and vertical bridges until one network is formed.
Play onlineGalaxies / Tentai Show
Divide the grid into rotationally symmetric areas centred on the marked dots.
Play onlineCountry Road
Draw a single route through regions while obeying entry, exit and clue restrictions.
No game yetArukone
Connect matching numbers or symbols with paths that do not cross or share cells.
No game yetPlacement and region Japanese logic puzzles
Placement and region Japanese logic puzzles ask where objects, stars, tents, ships, rectangles, borders or room contents can legally go. They cover Japanese-style object-placement puzzles, region-division puzzles and compact grid logic games like Shikaku, Star Battle, Tents and Trees, Battleship and Tatamibari.
Tents and Trees
Place tents beside trees while keeping tents apart and matching row and column counts.
Play onlineStar Battle
Place stars so every row, column and region has the required count without touching stars.
Play onlineQueens
Place queens or crowns so rows, columns and regions are satisfied without attacks.
Play onlineShikaku
Split the grid into rectangles, each containing one clue that gives its area.
Play onlineBattleship
Hide a fleet in the grid using row and column counts and non-touching ship rules.
Play onlineRipple Effect / Hakyuu
Fill each room with numbers while keeping equal numbers separated by distance rules.
No game yetTatamibari
Divide the grid into rectangles using clues that describe how each rectangle touches others.
No game yetHow to choose a Japanese logic puzzle
If you like numbers, start with Sudoku, Kakuro, Futoshiki or KenKen. If you like visual deduction, try Nonogram, Nurikabe, Akari or Shikaku. If you prefer drawing, Slitherlink, Masyu, Hashi and Numberlink are usually the most natural next steps.
Difficulty can vary wildly inside the same puzzle type, so the name of the puzzle is only part of the story. A small Nurikabe can be gentle, while a larger one can become a serious test of connected-area logic.
For a first Japanese logic puzzle, choose Sudoku, Nonogram, Futoshiki or Tents and Trees.
For pure no-guessing deduction, try Kakuro, Akari, Nurikabe, Slitherlink or Masyu.
For visual, relaxing solving, try Nonogram, Shikaku, Galaxies, Mosaic or Yin-Yang.
Play Japanese logic puzzles online
Several puzzles in this roundup link directly to playable versions on Logic Puzzles Online. A linked title opens the game page; an unlinked title is included for completeness but is not currently available here.
No extra images are required for this article because the card roundup and internal game links carry the page. A custom hero image could help social sharing later, but the post works without one.
Japanese Logic Puzzles FAQ
What are Japanese logic puzzles?
They are deduction puzzles strongly associated with Japanese puzzle culture, especially grid puzzles made popular by magazines, publishers and Japanese-style puzzle communities.
Is Sudoku a Japanese logic puzzle?
Sudoku has international roots but became globally famous through Japanese puzzle publishing, so it is usually included in Japanese logic puzzle roundups.
Are Picross and Nonogram the same thing?
Picross is a well-known brand-style name for Nonogram puzzles. Both describe picture logic puzzles solved from row and column clues.
Which Japanese logic puzzle should beginners try first?
Sudoku, Nonogram, Futoshiki, Tents and Trees and Shikaku are friendly starting points because their rules are easy to learn.