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Chess openings

Opening family

King's Gambit Declined Lines and Variations

The King's Gambit Declined family contains 53 named lines in this opening book, spanning ECO C30 to C32. Use this page as the map, then open individual lines for exact move orders and diagrams.

Named lines
53
ECO coverage
C30, C31, C32
ECO volume
C (open games after 1.e4 e5 plus the French Defense)
Shortest line
C30 King's Gambit Declined: Classical Variation: 1. e4 e5 2. f4 Bc5

How to study this family

White

The gambit side must turn time and activity into concrete threats; if the initiative fades, the pawn deficit matters.

Black

The defending side should return material if needed to finish development and neutralize the initiative.

Start with the shortest line, then branch to the variations that change the pawn structure or tactical target. Memorizing every branch before understanding the family plan is usually wasted work.

Main named lines

Deep theory branches

Start with the root lineDrill this family