The Scandinavian Defense: Main Line d4 – Black's Practical Guide

The key feature of this position is your queen sitting on a5. After 1.e4 d5 2.exd5 Qxd5, White chased her away with 3.Nc3, and you retreated to a5 rather than d6 or d8. This aggressive square keeps pressure on the c3-knight and the a-file, and it stops White from playing Bb5+ to hassle your king-side development. The trade-off is that your queen is somewhat exposed — White's most popular move (Bd2) directly attacks her, forcing a decision. Your main job in the next few moves is to develop your pieces harmoniously while keeping the queen safe and active. The engine prefers White to play Nf3 here, building a classical centre, which shows that White is already thinking about controlling e5 rather than chasing your queen around.

The most common move White plays here is 5.Bd2, appearing in over a million games. That's roughly half of all games reaching this position. After 5...Qb6 (the standard reply), you target the b2-pawn and keep the queen active. White will likely protect b2 with 6.Rb1 or develop with 6.Nf3. Notice that 5.Bd2 scores a modest 47.9% for White — barely over a draw rate — while Black's winning chances remain healthy. The queen on b6 exerts useful pressure down the b-file and can later retreat to c7 or a7 depending on how White organises their pieces. Just be careful not to let White trap your queen with a well-timed c4 advance; keeping an eye on that central break is part of the plan.

Stockfish's top recommendation for White is 5.Nf3, continuing with Bf5, Ne5, and c6. This setup is White's most principled try: Nf3 develops naturally and supports the d4-pawn while threatening Ne5, where the knight will eye the weak f7-square and your bishop on f5. Your response is straightforward: develop the light-squared bishop to f5, putting pressure on the c2-pawn and preparing to castle. After Ne5, you'll play c6 to give your queen a retreat on c7 and to solidify the d5-square. This line leads to a lively middlegame where both sides have clear plans — White wants to build a centre and attack, while you aim to complete development and challenge White's space advantage.

Two of White's possible moves here are genuine inaccuracies, and knowing them helps you spot when your opponent goes wrong. 5.Bd3 is an inaccuracy that loses roughly 0.7 pawns of advantage for White. The bishop to d3 blocks the d-pawn and doesn't develop with enough threat — you can continue with Bg4 or e6 and feel comfortable. Even more promising for you is 5.Bf4, another inaccuracy losing about 0.6 pawns. On f4, the bishop is vulnerable to the natural ...Nc6 followed by ...e5, when you kick the bishop and take over the centre. In both cases, if your opponent plays one of these suboptimal moves, stay alert: the engine thinks you've already improved your chances significantly, so look for active development rather than passive defence.