Blackmar-Diemer Gambit: von Popiel Gambit, Zilbermints Variation

The Blackmar-Diemer Gambit: von Popiel Gambit, Zilbermints Variation is a chess opening classified under ECO code D00 in the Closed & Semi-Closed Games family, arising from 1.d4 d5, including the Queen's Gambit, Slav Defense, and related systems. It is reached after 8 moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. Bg5 Bf5 5. Bxf6 exf6 6. g4 Bg6 7. Qe2 Bb4 8. Qb5+. The resulting position leaves black to move.