# oxxdoku — Queens Logic Puzzle

> Queens Logic Puzzle (iPhone/iPad app by 一鸥 张.)

- Source: https://appshunter.io/ios/app/oxxdoku/id6800311768 (this page in markdown: same URL + `.md`)
- Developer: [一鸥 张](https://appshunter.io/developer/1802883570)
- Category: Games, Casual, Puzzle
- Price: Free
- Age rating: 9+
- Requires: iOS 15.0 · 38 MB
- Languages: American English
- Released: 2026-09-09
- Data updated: 2026-09-17
- User reviews in markdown: https://appshunter.io/ios/app/oxxdoku/id6800311768/reviews.md

## What is oxxdoku?

If you enjoy the reasoning of Sudoku and the process of elimination in Minesweeper, oxxdoku sits right between them.

One O in every row, every column, and every color region. Mark the rest with X. Two O's can never touch — not even at a corner. Double-tap a square to place one.

Every board is solvable by pure deduction. No level will ever ask you to guess: boards that cannot be reached step by step are discarded before they ever reach you.

• 100 campaign levels, on boards up to 10×10
• A fresh daily challenge and a daily check-in, both from level 20
• Undo, hints, three lives, gentle haptics
• Plays offline, anywhere
• About 38 MB — kind to an older phone

About the ads: no account, no start-up popup, no consent form to dismiss. Watching one for an undo or a hint is always your choice. From level 20 a full-screen ad can appear after you clear a level; close it right away if you like — the next board is already waiting.

One row · one column · one color · one O.

Privacy Policy: https://huashan.studio/oxxdoku/privacy


## Version history (last 4 releases)

### 1.0.3 — 2026-09-15

New high-contrast colours, available in Settings. Fixes two regions on one board sharing a colour, and makes rewards for watched ads more reliable.

### 1.0.2 — 2026-09-13

Fixes a reward bug.

### 1.0.1 — 2026-09-11

The download is about half the size it was, so oxxdoku installs faster and takes less room on your phone. The puzzles are unchanged and your progress is exactly where you left it.

### 1.0.0 — 2026-09-09

No release notes.

## More apps by 一鸥 张

- [168 Fasting](https://appshunter.io/ios/app/168-fasting/id6762705730)
- [DailyFlows](https://appshunter.io/ios/app/dailyflows/id6763708513)

All apps by 一鸥 张: https://appshunter.io/developer/1802883570

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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 2026-09-17.*