Chess Opening Theory/1. e4/1...d5/2. exd5/2...Qxd5

= Scandinavian Defense: Mieses-Kotrč Variation = White should now play /3. Nc3/ to threaten the queen and gain a tempo, avoiding 3. b3??, losing a rook to Qe5+ or 3. g3??, losing the rook on h1. Though 3.d4 has been played by masters, why give a quick target to attack on d4?

White also has 3. Nf3, but after that, 3... Bg4 gives black some annoying counterplay.

What is interesting here is that there is a move that leads to mate in 1 for black. After 3. Ke2??, Qe4# follows.

Theory table
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1. e4 d5 2. exd5 Qxd5