Setup

Group size n: 4 Proposing side

A proposes to B B proposes to A

Preset

Run

Speed: 1.0×

Stats

Round0

Proposals made0

Rejections0

Engaged pairs0 / 4

Blocking pairs—

Proposing sideA → B

Gale–Shapley deferred acceptance: a free proposer asks its top remaining choice; the receiver tentatively keeps whoever it prefers and rejects the rest. Rejected proposers move down their list. The result is always stable — no two agents prefer each other over their assigned partners.