human
What is the name of the opening move in the Blackmar–Diemer Gambit?
assistant
The name of the opening move in the Blackmar–Diemer Gambit is 5. g4. White can use 5. g4 as a gambit option by continuing with 6. h4!?, which leads to sharp play and approximately equal chances. The push with 4... e3 is often used by strong players to avoid the complications arising from 4... exf3 5. Nxf3, but it is one of Black's weaker options against