Caro-Kann Defense: what should White play?

In this position from the Caro-Kann Defense, White's bishop on b5 is directly challenged by Black's pawn advance. The engine's top recommendation is the retreat Be2, preserving the bishop pair and yielding an evaluation of +0.13. White scores 49.0% from this square across 14K recorded games, offering a stable and sound setup compared to other retreats.

Understanding the Retreat with Be2

While Be2 represents only 8.1% of the 175,452 games in the database, it remains the most theoretically sound option according to computer analysis. By pulling back to e2, the e2 avoids further harassment by queenside pawns and stays compact. An illustrative engine continuation runs Be2 c5 Nf3 Nf6 Nc3 e5, where White develops naturally while Black contests central space.

Human Preferences: Ba4 and Bc4

Human players choose other retreats far more frequently, though with slightly less favorable assessments. The move Ba4 is the most common choice, appearing in 43.5% of games (76K recorded) with an evaluation of -0.12 and a 44.4% scoring rate for White. It often leads into Ba4 Nf6 d3 g6 c3 b5, where Black continues expanding on the queenside. Meanwhile, Bc4 is seen in 37.2% of encounters (65K recorded) and evaluates at -0.42, scoring 43.9% for White following Bc4 Nf6 d3 d5 exd5 cxd5.

Minor Retreats to d3 and f1

The remaining options see significantly less practical use. The central retreat Bd3 is played in 7.3% of games (13K recorded) with an engine evaluation of -0.33, continuing Bd3 Nf6 c3 e5 Bc2 d5 and a 41.7% scoring rate. Finally, returning to the starting square via Bf1 occurs in just 3.9% of games (6.9K recorded), resulting in an evaluation of -0.29 and the lowest performance among the choices at 40.1% points scored.