Ruy Lopez - Archangelsk (counterthrust) variation
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7
White plays the king's pawn to e4. Black plays the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White develops the light-squared bishop to b5. Black advances the a-pawn to a6.
White places the light-squared bishop to a4. Black transfers the knight to f6. White castles kingside.
Black plays the b-pawn to b5. White places the light-squared bishop to b3. Black develops the light-squared bishop to b7.