# Doctor Chess

> Official FIDE rules · Online

Canonical page: [https://chrome-stats.com/d/id6766081915](https://chrome-stats.com/d/id6766081915)

## Overview

- **ID:** `id6766081915`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Lim Sangjin
- **Category:** Board
- **Version:** 1.1.2
- **Last updated:** 2026-07-22
- **First published:** 2026-05-05
- **Size:** 21 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/doctor-chess/id6766081915)
- **Website:** [http://jin-apps.s3-website.ap-northeast-2.amazonaws.com/chess/](http://jin-apps.s3-website.ap-northeast-2.amazonaws.com/chess/)
- **Privacy policy:** [http://jin-apps.s3-website.ap-northeast-2.amazonaws.com/chess/privacy.html](http://jin-apps.s3-website.ap-northeast-2.amazonaws.com/chess/privacy.html)

## Description

Doctor Chess brings the full FIDE rule set to your phone and tablet — castling, en passant, promotion, threefold repetition, the 50-move rule, and insufficient material draws are all enforced.

• Single player — local pass-and-play plus five AI tiers (Beginner / Intermediate / Advanced / Expert / Master)
• Master tier uses iterative-deepening alpha-beta search with quiescence, null-move pruning and late-move reduction
• Online 1v1 — turn-based matches via Apple Game Center, no sign-up required
• Friend invites through the system Game Center picker
• OS-native leaderboards and achievements
• 40 languages — Korean, English, Japanese, Chinese (Simplified/Traditional), Spanish, French, German, Italian, Portuguese, Russian, Vietnamese, and many more
• Tap or drag to move, automatic promotion dialog, last-move highlight, legal-move dots

No sign-up. No ads. No tracking. No in-app purchases.

## Rankings

- #1,295,357 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6766081915)