In e3 Poison, Swedish grandmaster Axel Smith presents a practical and strategically oriented opening repertoire for White based on the moves d4, Nf3, c4 and e3. Rather than relying on extensive memorisation of forcing variations, the author emphasises pawn structures, positional themes and typical plans arising from this flexible opening system. The book examines different move orders, explains their advantages and disadvantages, and shows how White can develop a coherent middlegame strategy from the opening. Numerous exercises help readers test their understanding and apply the ideas in practical play. Drawing on the author's own experience of preparing for the grandmaster title, the book demonstrates how a relatively restrained opening setup can provide ambitious players with a competitive and adaptable repertoire. Axel Smith is a Swedish chess grandmaster, author and coach. He is known for his systematic approach to chess improvement, combining practical training methods with a strong emphasis on understanding positions rather than memorising variations. His previous book, Pump Up Your Rating, received the ChessCafe Book of the Year award. Smith has also written instructional works aimed at helping players improve their strategic understanding and competitive performance. (AI-generated content description)