Editing Pawn (chess) (section)

===Promotion===
{{main article|Promotion (chess)}}
A pawn that advances to its {{chessgloss|eighth rank|last rank}} is ''promoted'' to a queen, rook, bishop, or knight of the same color. The pawn is replaced by the new piece on the same move. The choice of promotion is not limited to pieces that have been captured; thus, a player could, in theory, have as many as nine queens, ten rooks, ten bishops, or ten knights on the board. Promotion to a queen is also known as ''queening'' and to any other piece as ''underpromotion''. Reasons for underpromotion include [[chess tactic|tactical]] positions involving a [[knight (chess)|knight]] check, and avoiding [[stalemate]].

While some chess sets include an extra queen of each color, most standard sets do not come with additional pieces, so the physical piece used to replace a promoted pawn on the board is usually one that was previously captured. In informal games, when the correct piece is not available, an additional queen is often indicated by inverting a previously captured rook. In tournament games, however, this is not acceptable, and may result in the arbiter ruling that the upturned piece is a rook.<ref>Mike Klein, [https://www.chess.com/news/view/controversial-finish-to-canadian-chess-championship-5047 Controversial Finish To Canadian Championship -- Update] {{Webarchive|url=https://web.archive.org/web/20201109033018/https://www.chess.com/news/view/controversial-finish-to-canadian-chess-championship-5047 |date=2020-11-09 }}, chess.com, 12 July, 2017</ref>