King's Pawn Game: Tortoise Opening
ECO C20 · 1. e4 e5 2. Bd3
Related variations
- King's Pawn Game: MacLeod Attack
- King's Pawn Game: Wayward Queen Attack
- King's Pawn Game: Busch-Gass Gambit
- King's Pawn Game: Damiano Defense
- King's Pawn Game: Tayler Opening
- King's Pawn Game: Alapin Opening
- King's Pawn Game: King's Head Opening
- King's Pawn Game: Leonardis Variation
- King's Pawn Game: Mengarini's Opening
- King's Pawn Game: Napoleon Attack
- King's Pawn Game: Bavarian Gambit
- King's Pawn Game: Beyer Gambit
- King's Pawn Game: Clam Variation, King's Gambit Reversed
- King's Pawn Game: Gunderam Gambit
- King's Pawn Game: Maróczy Defense
- King's Pawn Game: McConnell Defense
- King's Pawn Game: Dresden Opening
- King's Pawn Game: Pachman Wing Gambit
- King's Pawn Game: Clam Variation, Radisch Gambit
- King's Pawn Game: Gunderam Defense, Gunderam Gambit
- King's Pawn Game: Philidor Gambit
- King's Pawn Game: La Bourdonnais Gambit
- King's Pawn Game: Schulze-Müller Gambit
- King's Pawn Game: Weber Gambit