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Maswabe Aegis

The engine behind Tetrarch

Maswabe is a neural engine built for one thing: four-player chess. Not a chess engine bolted onto a strange board — a purpose-built mind that understands teams, turn order, and the chaos of four armies at once. Aegis is its final form.

Play Maswabe todayThe current version — Maswabe NNUE V2 — is live for practice at any strength.
Play the engine

How it was built

Hand-crafted
Human chess knowledge, encoded by hand — the classical evaluation that gave Maswabe its footing.
NNUE v1
The first neural network replaced the handwritten rules — a decisive leap in strength.
SHIPPED
NNUE v2
Retrained on tens of millions of self-play positions. What you play against right now.
LIVE
Aegis
The final version — stronger still, and the backbone of Tetrarch's fair play and analysis.
IN DEVELOPMENT

What Aegis does

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Plays youA tireless sparring partner, from gentle to merciless — the fastest way to get better at 4PC.
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Reviews your gamesSOONMove-by-move analysis: your blunders, the better moves, the turning points.
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Protects fair playThe reference every ranked game is measured against — the shield that keeps the leaderboard honest.

Maswabe Aegis is developed for Tetrarch and does not exist as a public download — it lives only here, in service of the game.
Named for the aegis: the shield of the gods. Fitting, for the thing that guards fair play.