The Chessboard Viewer plugin allows users to visualize chess positions in Obsidian using FEN notation within a code block. It generates SVG-based chessboards optimized for visualization, HTML, and PDF exports, making it ideal for presenting static chess diagrams. Users can customize the board orientation, annotate with arrows and highlights, and adjust board and piece colors. The plugin focuses solely on visual representation and is not intended for interactive gameplay or PGN file handling. It provides a simple and effective way to include chess diagrams in notes.