When is it useful to invest a lot of time in thinking about a position, and when is it not? This is a question that players ask themselves time and time again. Our reviewer is familiar with this topic from his own experience. Hannes Langrock is an editor at a fiction publishing house and an International Master. He lives in Leipzig and plays for ESV Nickelhütte-Aue. He studied the course intensively and shares his thoughts on it. | Photos: ChessBase

