The Caro-Kann Defense is a popular chess opening that begins with the moves 1.e4 c6. It is favored by players who seek a solid and resilient structure, allowing Black to develop pieces without creating weaknesses. The opening aims to challenge White's center while maintaining a strong pawn formation. This defense is named after Horatio Caro and Marcus Kann, who analyzed it in the 19th century. The Caro-Kann often leads to strategic and positional battles, making it a favorite among both amateur and professional players. Its flexibility allows for various pawn structures and piece placements, providing rich opportunities for counterplay.