Unfurling the codex…
A source-cited reference to chess theory
Brinkmate · Chess endgame literature · Decoy (chess) · First-move advantage in chess · Key square · King and pawn versus king endgame · Opposite-colored bishops endgame · Opposition (chess) · Pawn structure · Philidor position · Queen and pawn versus queen endgame · Queen versus pawn endgame · Rook and pawn versus rook endgame · School of chess · Tarrasch rule · Tempo (chess) · Triangulation (chess) · Two knights endgame · Wrong bishop · Wrong rook pawn · Zugzwang