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ECO C28

ECO C00–C99 — Open Games and the French Defense: 1.e4 e6 and 1.e4 e5, from the Italian and Ruy Lopez to the King's Gambit.

3 named opening lines are classified under ECO code C28.

Bishop's Opening: Vienna Hybrid, Hromádka Variation — 1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.d3 Bb4 5.Ne2
Vienna Game: Stanley Variation, Bronstein Gambit — 1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.f4 Nxe4 5.Nf3
Vienna Game: Stanley Variation, Three Knights Variation — 1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6