In this article I introduce you to a trick against the Bogo-Indian Defence. In the variation below it is still apparently possible for Black to draw after 10. ... Ne4! (but only if you have the skills and vision of Capablanca ...)
I have to admit that I don't think I've ever played the Blackmar-Diemer Gambit as White but perhaps I'd better start doing so ... ? This can be a trappy opening as the variation in this post proves.
The Blackmar–Diemer Gambit arose as a development of the earlier Blackmar Gambit, named after Armand Blackmar, a relatively little-known New Orleans player of the late 19th century who popularized its characteristic moves (1.d4 d5 2.e4 dxe4 3.f3) and was the first player to publish analysis on the opening in the chess literature."
Here are some lines in the Blackmar-Diemer Gambit ... This is very sharp and although White is said to have the advantage with the passed a-pawn, I expect it's still quite difficult to convert for White!
"Chess is a form of intellectual productiveness; therein lies its peculiar charm, and intellectual productiveness is one of the greatest joys of human existence".
Dr Siegbert Tarrasch (1862-1934), The Game of Chess, 1936, translated by G.E. SMITH and T.G. BONE.