Today's game is shown, not to illustrate good technique, but to emphasize the importance of looking at what is left behind. The Paleface Attack often leads to the Blackmar-Diemer Gambit when Black responds with 1...Nf6. The game was even until the 2nd move out-of-book. Then the mistake.
In turn-based games it is especially easy to react to where a piece is moved to and recapture the Bishop. A survey of the board shows that 11...Bxd3 fatally unprotects the f7 square and a mate quickly follows.