French Defense Classical Variation Beginner Puzzle (Rated 1431): Win Material — Trapped Piece

This puzzle comes from the French Defense, Classical Variation, where one side has built pressure against the king and a key piece becomes awkwardly placed. The main idea is a trapped piece motif: a piece looks active at first, but its squares are restricted and tactical pressure forces it into a losing sequence. In practical classical chess, these positions reward accurate calculation and awareness of piece coordination, not just material counting.