Mastering the Nimzowitsch Defense: Mikenas Variation with 3.Bb5

After 3...g6, your immediate goal is to fianchetto the dark-squared bishop to g7, where it will eye the centre and the long diagonal. This is the backbone of your setup. White's bishop on b5 is pressuring the knight on c6, but your pawn on d6 already prevents it from being too annoying. The key tension revolves around White's next move: the engine's top choice is c4, which builds a strong pawn centre and prepares Nc3. If White plays something else — like the popular d5 or the inaccurate Bxc6+ — the position shifts sharply in your favour. Understanding what you're aiming for (a fianchettoed bishop, flexible central pawns, and quick development) will help you feel at home even when White has a slight plus.

At depth 16, Stockfish recommends c4 for White, followed by Bd7, Nc3, and Bg7. The idea is straightforward: White claims more space with c4, develops naturally, and lets you finish your fianchetto. After c4, your most solid continuation is Bd7 (unpinning the knight), then Nc3, and you play Bg7. The resulting position is well-known and playable for Black. Your plan from there typically involves ...e5 or ...b5 at the right moment. The most important thing is to stay calm — White's edge is real but small, and if you complete your development without making a mistake, you'll reach a middlegame where your bishop pair and central control give you real winning chances.

The database of 1,577 games at this exact position tells a clear story. Here's a quick breakdown of White's most common moves and how Black scores: - d5 (939 games): White scores 56.2%. This is the most popular move, pushing in the centre immediately. It's not the engine's top choice, but it's tricky. - Bxc6+ (280 games): White scores 48.9%. This is marked as an inaccuracy — it loses about 0.7 pawns of advantage. You should be happy to see this. - Nf3 (146 games): White scores 50.7%. A solid developing move, but nothing special for White. - Nc3 (48 games): White scores 62.5%. This is actually quite dangerous — White scores best here, despite it being rare. - c3 (29 games): White scores only 34.5%. A passive move that you can punish. - Ba4 (18 games): White scores only 22.2%. Another poor move for White. So the stats confirm: if White plays anything other than c4 or Nf3, you're already doing well. The biggest gift is Bxc6+, which is a known mistake.

The database explicitly flags Bxc6+ as an inaccuracy, losing roughly 0.7 pawns compared to the best move c4. If White plays this, your plan is simple: recapture with ...bxc6 (not ...dxc6) to open the b-file and give yourself a half-open file for your rook. Your doubled c-pawns are not a liability here — they control d4 and d5, and your bishop on g7 will become a monster. After ...bxc6, White's centre is no longer under pressure, and your queenside play with ...c5 and ...Rb8 becomes a long-term asset. Many club players automatically trade on c6 thinking it simplifies, but it actually gives up White's best attacking chances. Make sure you're ready to seize the advantage when this happens.