# 関所ビルディング — 実力に合わせて無限に出題される論理パズル

> 実力に合わせて無限に出題される論理パズル (iPhone/iPad app by Masatoshi Koeda.)

- Source: https://appshunter.io/ios/app/id6806700734 (this page in markdown: same URL + `.md`)
- Developer: [Masatoshi Koeda](https://appshunter.io/developer/1859334984)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 14.0 · 9 MB
- Languages: American English
- Released: 2026-08-31
- Data updated: 2026-09-18
- User reviews in markdown: https://appshunter.io/ios/app/id6806700734/reviews.md

## What is 関所ビルディング?

Sekisho Building is a new building-height logic puzzle with hint cells placed inside the grid instead of around it.

■ Solve with logic, not luck
No guessing required, ever. Every puzzle is solvable by stacking simple, deterministic techniques until you reach the one true answer.

■ Difficulty that adjusts to you
Your rating shifts as you play, and each new puzzle is freshly generated to match it. There's no fixed puzzle set, so you'll always find something new.

■ Input that feels effortless
Long-press to enter a number, double-tap to jot a note. Every interaction is tuned for comfortable one-handed play.

■ Learn techniques, step by step
Built-in lessons cover everything from the basics to advanced techniques. When you're stuck, work through a lesson to pick up the idea one step at a time.

■ Light or dark, your choice
Follow your system setting or pick your favorite palette. Dark mode is easy on the eyes for late-night solving.

One quick puzzle between tasks, or one deep session when you have the time — there's always a puzzle that fits your skill, waiting right here.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-09-04

Reordered the App Store screenshots.

### 1.0 — 2026-09-01

No release notes.

## More apps by Masatoshi Koeda

- [dumppp - Notion Capture & Read](https://appshunter.io/ios/app/dumppp-notion-capture-and-read/id6756224251)
- [SkyScraper - Building Puzzle](https://appshunter.io/ios/app/skyscraper-building-puzzle/id6800217869)

All apps by Masatoshi Koeda: https://appshunter.io/developer/1859334984

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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 2026-09-18.*