Openings: Semi-Open Games
Read-Understand-Play
The Scotch Gambit
An Energetic and Aggressive Opening System for White
Rocket Repertoire: The Four Knights
FritzTrainer Opening
Sam Collins: Open Games with ...Bc5
FritzTrainer Opening
A Gambit Guide Through the Open Game Vol. 1
With Interactive Training Including Video Feedback
A Gambit Guide Through the Open Game Vol. 2
With Interactive Training Including Video Feedback
Playing 1.e4 e5
A Classical Repertoire
Bologan's Black Weapons in the Open Games
How to Play for a Win if White Avoids the Ruy Lopez
Tactics - From Basics to Brilliance vol. 4
Tactics in the Open Games
Power Play 17: Attack with 1.e4
All the Practical Skills and Knowledge you Need
The Alterman Gambit Guide - Black Gambits 2
Incl: Marshall Attack, Traxler variation, and more
The Four Knights Game
A New Repertoire in an Old Chess Opening