All ECO Codes
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C20
King's Pawn Game
1.e4 e5
C20
King's Pawn Game
Indian Opening
1.e4 e5 2.d3
C20
King's Pawn Game
Mengarini's Opening
1.e4 e5 2.a3
C20
King's Pawn Game
King's head Opening
1.e4 e5 2.f3
C20
King's Pawn Game
Patzer Opening
1.e4 e5 2.Qh5
C20
King's Pawn Game
Napoleon's Opening
1.e4 e5 2.Qf3
C20
King's Pawn Game
Lopez Opening
1.e4 e5 2.c3
C20
Alapin Opening
1.e4 e5 2.Ne2