Nunn: Das Verständnis des Mittelspiels im Schach Spielmaterial the Two Knights Ulvestad Variation

the Two Knights Ulvestad Variation (1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 4 Ng5 d5 5 exd5 b5) and ultra-sharp lines of the Jaenisch Gambit (1 e4 e5 2 Nf3 Nc6 3 Bb5 f5)

from club level up

and a special foreword to this new edition by Swedish Grandmaster Pontus Carlsson

The doctor of mathematics and philosophy was also a master chess psychologist

Nunn: Das Verständnis des Mittelspiels im Schach Spielmaterial the Two Knights Ulvestad VariationWith the 100 most important middle game ideas The three time world champion in chess problem solving has summarized the most useful middlegame concepts and knowledge in 100 lessons that everyone can understand. In this important work, John Nunn devotes himself to the middle game the phase of the battle in which most games are decided, but also the one that has been treated rather poorly in chess literature. With the outstanding clarity for which he is