In this video, the narrator discusses one of his favorite gambits, the Blackmar-Diemer, as among the gambit with the boldest moves for white to have a growing advantage.
At the start of the game, white seems to surrender its king's pawn from the second move. Even though a lot of top game masters find this to be unsafe, it is still recommended to play it every now and then if you are an aggressive player. He moves the knight into c3, after that playing f3 after white sacrifices gambit's his pawn. White can either choose to seize the knight or take an aggressive line of play (Ryder Gambit), then seize the queen after black captures f3, thus letting the opponent's queen taking another pawn on d4.
It is also pointed out that there are a lot of instances that black will tumble into the Halosar Trap whenever white decides to play the Ryder Gambit. The narrator emphasizes the importance of keeping in mind that Blackmar-Diemer gambit opening could be switched from other chess openings. White starting with e4 and black taking action with the known Scandinavian Defense opening at d5 are among the most common lines. Now, you can play d4 and white will still get the same formation if you don't want to play against the Scandinavian Defense.
Watch the video to find more thorough explanations about the Blackmar-Diemer Gambit.