Complete reference

Complete Chess Opening Catalogue

This catalogue lists all 3733 named positions in the source opening book. Each entry is an exact lookup record for repertoire work; strategic explanations live in the substantial Openings A–Z family guides.

• ECO A complete catalogue — Flank openings (1.c4, 1.Nf3, irregular)
• ECO B complete catalogue — Semi-open games (Sicilian, Caro-Kann, …)
• ECO C complete catalogue — Open games & French (1.e4 e5, 1.e4 e6)
• ECO D complete catalogue — Closed & semi-closed games (1.d4 d5, Grünfeld)
• ECO E complete catalogue — Indian defenses (Nimzo, King’s Indian, …)