This Blackmar-Diemer Theory 3 book provides accurate chess analysis of the Gambit Accepted after 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3. Critical lines are shown as concisely as possible. This book has been arranged according to the 50 variations that you are most likely to see. All the chess analysis and evaluations in this book have been checked with computer chess engines. Is Blackmar-Diemer Gambit sound? That's a loaded question. Statistically White has scored 58% from the official 4.f3 BDG position. That compares favorably to 54% for all openings. On a practical level, it is sound. The...