Chess Akt

• 500 problemi di scacchi, Mate in 4 mosse, Avanzato
• 500 Exercices d'échecs, Mat en 3 Coups, Niveau Intermédiaire
• Ajedrez 500 Ejercicios, Mate en 3, Nivel Intermedio
• Chess for Beginners
• 500 Chess Puzzles, Mate in 1, Beginner Level
• 500 Chess Puzzles, Mate in 6, Expert Level
• 500 exercices d'échecs, Mat en 4 coups, Niveau Avancé
• 500 Schachaufgaben, Matt in 3 Zügen, Mittelstufe
• 500 Chess Puzzles, Mate in 1, Beginner Level
• 500 Chess Puzzles, Mate in 2, Beginner and Intermediate Level
• 500 Chess Puzzles, Mate in 3, Intermediate Level
• 500 Chess Puzzles, Mate in 4, Advanced Level