My son and I played in a recen tournament in Marlborough, Mass. We were seated at boards 41 & 42, so it allowed me to watch parts of his game as he and his opponent played. At one point, I looked up and saw that there was a forced move made that allowed my son to take his opponent's queen. Afterward, I asked him to review the move sequence with me. After seeing the moves, I searched on the position and found that the defense was the opening move sequences for the Albin Counter Gambit. However, his opponent didn't play the sequence of moves correctly. I have aptly named this line of the Gambit, "Isaac's Trap".
Below is the game up to the checkmate.