# Yajisan-Kazusan

> Logic puzzle game involving shading grid squares with adjacency and directional number clues. (iPhone/iPad app by Yuki Fujimoto.)

- Source: https://appshunter.io/ios/app/yajisan-kazusan/id1185283127 (this page in markdown: same URL + `.md`)
- Developer: [Yuki Fujimoto](https://appshunter.io/developer/467085185)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free
- Rating: 4.80/5 from 4 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 17 MB
- Languages: American English, Japanese
- Released: 2016-12-13
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/yajisan-kazusan/id1185283127/reviews.md

## What is Yajisan?

Yajisan-Kazusan is logical puzzle game.

The object is to shade in some of the grid squares. 
No two shaded squares should be adjacent, and all of the unshaded squares should be in one contiguous region – equivalently, any two unshaded squares should have a path joining them through adjacent unshaded squares. 
Squares with a number and arrow are clues, and may also be shaded or unshaded. 
If a clue is unshaded, the number tells how many shaded squares the arrow points to. 
If a clue is shaded, it gives no information (it can be right or wrong).

## Key features

- Shade grid squares
- Avoid adjacent shaded squares
- Create contiguous unshaded regions
- Use number and arrow clues
- Clues indicate shaded squares pointed to

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/yajisan-kazusan/id1185283127/reviews.md

### 4/5 — 何度もアプリが落ちる

*2024-08-27, version 1.2*

ゲーム自体は楽しいのに、数十秒に一回のペースでアプリが落ちます。
改善お願いします。

### 3/5 — おもしろくて好きだけど…

*2024-07-15, version 1.2*

頻繁に落ちる。1分の中でも5,6回落ちる事も。
キャッシュも消して要らないアプリを消したりして軽くしているつもりなんですけどね〜

皆さんはそのへん大丈夫なのでしょうか

### 4/5 — Fun puzzle, why does it paste on start?

*2021-09-11*

I enjoy the logic puzzle part, but an very confused why it pastes from the clipboard upon start. Would up to 5⭐️ if that was removed.

### 4/5 — 好き

*2020-08-04, version 1.2*

はまる人ははまる。ただ全何問なのか、、、12×12 1827まで進んでますが一向に終わる気配がありません、、、あとはバックアップの機能がほしいところ、、、

### 5/5 — 面白いです

*2020-06-14, version 1.2*

12×12の9も96も解けますよ

### 3/5 — たしかに説明そのままのルールだけど

*2019-11-13, version 1.2*

あそびかたを読んでも全然ピンとこなかった
優しく説明しようとして逆にわかりにくくなってるんでは

### 5/5 — Great pass time

*2019-11-06*

I love this game and the competition with the leaderboard is fun.

### 3/5 — 詰み問題

*2017-11-14, version 1.1*

12✖️12 96番 差替えてほしいです

### 2/5 — undo不実装は残念

*2017-04-09, version 1.0*

作者の意図であれば仕方ありませんが、パズプレなどには実装されているundo機能がないことで、間違った手を指した場合に収集がつかなくなることは残念という他ありません。一からやり直さなくとも正解に辿り着けるようにすることがパズルの妙味を損ねていると作者はお思いなのでしょうか。無料ゲームに多くを期待するのが間違っているのは承知していますが、やり続けようという意欲を大いに削がれたことをご報告する次第です。

### 5/5 — 全何問なんでしょ？

*2017-02-26, version 1.0*

ロジックパズル好きにはたまらないです。
各25問、全300問だと思ってたら、問題番号のところ、スワイプできたんですね(^_^;)
全問解き終わったと思ってたから、さっき気づいてちょっとびっくり。
もちろん、まだまだ解けるのは嬉しいので、引き続き楽しませてもらいます。

## Frequently asked questions about Yajisan

### What is the objective of Yajisan-Kazusan?

The objective is to shade in some of the grid squares. No two shaded squares should be adjacent, and all unshaded squares must form one contiguous region. Squares with numbers and arrows act as clues.

### How do the number and arrow clues work in Yajisan-Kazusan?

If a clue square is unshaded, the number indicates how many shaded squares the arrow points to. If the clue square is shaded, it provides no information.

### Is Yajisan-Kazusan available for offline play?

The description does not specify offline play capabilities. However, as a logic puzzle game, it is likely playable without an internet connection.

### What devices can I play Yajisan-Kazusan on?

Yajisan-Kazusan is available for iPhone, iPad, and iPod devices.

### What is the age rating for Yajisan-Kazusan?

Yajisan-Kazusan has an age rating of 4+, making it suitable for young players and families.

### How often is Yajisan-Kazusan updated?

The latest version was released on July 9, 2018. The app has not received updates since then, indicating a less frequent update schedule.

### Does Yajisan-Kazusan have ads?

No, Yajisan-Kazusan does not contain advertisements, providing an uninterrupted puzzle experience.

### What do users think of Yajisan-Kazusan?

Users have rated Yajisan-Kazusan highly, with an average of 4.8 stars from 4 ratings, suggesting a positive reception to its gameplay.

## Version history (last 3 releases)

### 1.2 — 2018-07-09

This app has been updated by Apple to display the Apple Watch app icon.

Optimize for the latest iOS

### 1.1 — 2017-08-19

Improve the usability

### 1.0 — 2016-12-13

No release notes.

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## More apps by Yuki Fujimoto

- [Thoroughly Freecell](https://appshunter.io/ios/app/thoroughly-freecell/id849017205)
- [Mahjong Tile Solitaire](https://appshunter.io/ios/app/mahjong-tile-solitaire/id892138094)
- [Thoroughly Sichuan](https://appshunter.io/ios/app/thoroughly-sichuan/id894399422)
- [Thoroughly Pelmanism](https://appshunter.io/ios/app/thoroughly-pelmanism/id896355967)
- [Four Leaf Clover](https://appshunter.io/ios/app/four-leaf-clover/id898621721)
- [Thoroughly Honkong (Mahjong Puzzle)](https://appshunter.io/ios/app/thoroughly-honkong-mahjong-puzzle/id901291989)

All apps by Yuki Fujimoto: https://appshunter.io/developer/467085185

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*