Gertler: Play the Mackenzie - A sharp White attack in the Ruy LopezMackenzie Variante: Dein berraschungsrepertoire gegen die Spanische Partie This theoretically solid opening repertoire for White, based on playing 5. d4 in the main line of the Ruy Lopez (1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6), gives you a great way to bamboozle your opponent, who is probably unprepared for this variation and its many pitfalls. Black can easily go wrong within the next few moves and quickly lose material or succumb to a crushing