Stupid Hard Chess
Blindfold & memory training
Only for iPhone
Free · In‑App Purchases
iPhone
Chess, but stupid hard.
You play real chess against a real engine. One catch: some of YOUR pieces are hidden — they render as identical dots, and it's on you to remember which dot is the rook.
That's the whole game. Hold the board in your head while an engine tries to take it apart.
HOW BLIND DO YOU WANT TO BE?
- Full Blind — every one of your pieces is a dot. Good luck.
- Minor Blind — knights and bishops vanish. A reasonable place to start.
- Semi Blind — half your army, hidden.
- Random Blind — the app decides. You find out when you sit down.
Every game is real chess with full rules, powered by a genuine engine running entirely on your phone. Four difficulty tiers, from "warming up" to Expert. No internet required to play.
STAKES YOU AGREE TO UP FRONT
Before every game, you see exactly what a win, draw, or loss is worth — and the harder your setup, the bigger the swing. That number is your Stupid Score. It goes up when you earn it and down when you don't. There's no hiding from it, and honestly, that's the point.
Play daily to build your Stupid Streak. Break it and start over. We won't judge (the number will).
WHEN YOUR MEMORY FAILS
It will. You get a limited number of Board Reveals per game — a scan sweeps the board, shows you the truth for ten seconds, then takes it back. Auto-Peek can flash the board periodically if you want the training wheels. Move hints exist too, but they cost you score. Everything has a price here.
STUPID HARD PRO
- Build your own nightmare: hide exactly the pieces you choose, yours or the engine's, with full per-piece control
- Advanced stats: win rates by setup, score history, records
- 4 board reveals every game, no ads, nothing between you and the board
Pro is a subscription ($4.99/month or $39.99/year) with a 7-day free trial for new subscribers. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings.
Built for chess players who want to train visualization the honest way: by needing it.
Privacy Policy: https://stupidhardchess.com/privacy
Terms of Use: https://stupidhardchess.com/terms
The chess is still stupid hard. The app got a little better around it.
• New: Open Source Licenses screen (Profile → Open Source Licenses) — full source offer for the Stockfish engine that keeps beating you.
• Better layouts on smaller iPhones, including the capture rails.
• Captured pieces now count correctly in games with a pawn promotion.
• Smoother onboarding and privacy-consent flow.
• Fixed a flash when a piece reveal expired, and tidied the in-game status pill.
The developer, Yazid Masri, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yazid Masri
- Size
- 146.3 MB
- Category
- Board
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Stupid Hard Chess Pro - Annual $39.99
- Stupid Hard Chess Pro - Monthly $4.99
- Copyright
- © 2026 Yazeed Masri