X90: King's Pawn Game: Derick Rosen System
Named Variations:- Carlos Magnum Defense
- Carlos Magnum Defense, Exchange Variation
- Carlos Magnum Defense, Saint Louis Variation
Parent: King's Pawn Game
Move Order: 1. d4 d5 2. Bf4 Bf5 3. c3 e6 4. Qb3 Bd6
Move Order: 1. d4 d5 2. Bf4 Bf5 3. c3 e6 4. Qb3 Bd6
X90: King's Pawn Game: Derick Rosen System, Carlos Magnum Defense
Parent: King's Pawn Game: Derick Rosen System
Move Order: 1. e4 e5 2. Be2 d5
Main Line: 3. Nf3 dxe4 4. Nxe5 Qg5 5. Ng4
Possible Continuations:
Move Order: 1. e4 e5 2. Be2 d5
Main Line: 3. Nf3 dxe4 4. Nxe5 Qg5 5. Ng4
- 5. ... Bxg4 6. Bxg4: X90.0.0: King's Pawn Game: Derick Rosen System, Carlos Magnum Defense: Exchange Variation
- 5. ... Nc6 6. d4 Qg6: X90.0.1: King's Pawn Game: Derick Rosen System, Carlos Magnum Defense: Saint Louis Variation