Chessify
Cloud engine analysis in a browser. Run Stockfish at massive server speeds without installing anything.
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Our take
If you don't want to build a dedicated analysis PC, Chessify is the shortcut. The cloud speeds are genuinely transformative for serious preparation — I've run overnight analyses that would have taken a week on my laptop. Just keep an eye on the meter; it's easy to blow through your monthly Mn allowance chasing one interesting position.
Chessify provides browser-based access to a farm of powerful chess engines running on GPU and high-core-count servers. You paste a PGN or set up a position, hit “analyze”, and the cloud engine chews at a depth your laptop couldn’t reach in a day.
It also includes a “scan board” feature that turns a photo or screenshot into a FEN, plus an auto-annotate tool that produces a commented PGN from a game.
Pros
- Access to multi-hundred-megakn cloud analysis without owning a GPU
- PGN upload, scanning a board from a photo, and auto-annotation in one place
- Fair pricing tiers; pay-as-you-go "Mn" credits available alongside subscriptions
Cons
- Subscription plans cap monthly engine time — deep research can burn through credits fast
- Web-only, no offline use — useless on a plane
- The auto-annotated PGN export is fine but less polished than dedicated annotation tools
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