The Sealed Move

Running From the Book
Opening theory did not stop deepening in the engine era. At the top, the repertoire moved out from under it.
Jul 7 • Paweł Fiedor

June 2026

Solid Ground
What 1.6 Million Correspondence Games Say About the Opening
Jun 9 • Paweł Fiedor

April 2026

The Correspondence Chess Toolkit: What Serious Players Actually Use
A practical guide to databases, software, engines, and the occasional edge case
Apr 15 • Paweł Fiedor
What Is the Right Way to Use an Engine in Correspondence Chess?
A guest post by Sean Clark, with a note on further reading
Apr 8 • Paweł Fiedor and Sean Clark
The Game That Won Me the Championship
Chess960 Position #761 — a 65-move endgame grind, and what it taught me about correspondence chess in the engine age
Apr 7 • Paweł Fiedor
What Is Correspondence Chess?
The oldest, slowest, and most deeply analytical form of the game — and why it matters more than ever.
Apr 7 • Paweł Fiedor
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