The Caro-Kann is a popular chess opening that begins with the moves 1.e4 c6. It is known for its solid structure and resilience, making it a favorite among players who prefer a defensive yet flexible approach. The opening allows Black to challenge White's center while maintaining a strong pawn formation. This opening often leads to rich strategic battles, as Black aims to develop pieces harmoniously and counterattack. The Caro-Kann can transition into various pawn structures, providing players with multiple options for both sides. It is frequently employed at all levels of play, from beginners to grandmasters.