The only way to win the game is to promote to a Bishop. The main reason is to avoid a stalemate if you promote to a Queen, to avoid a stalemate or a mate if you promote to a Rook, to avoid a stalemate or insufficent material for the win if you promote to a Knight.
Is a knight for a rook a good trade?
A Rook in play is worth nearly a Knight and two pawns. A Rook and pawn are nearly equal to two Knights, but are not so good as a Bishop and Knight. Thus, castling is a sufficient defense against an attack on the f-pawn by a Knight and Bishop. 4.
When to underpromotion a bishop or a rook in chess?
Promotion to a rook or bishop is typically pointless because the queen can move the same way as the two pieces combined. Underpromotion to a bishop or rook is typically done when the player is not taking the game seriously and thus has no practical value in chess.
What happens when a pawn is promoted to a bishop in chess?
Without going into two much detail, its possible for the opponent to place his King in a place whereby your pawn being promoted stalemates him, but an under-promotion to a rook or a bishop leaves a square unthreatened for the opponent’s king to move into.
When is it necessary to give a Knight a promotion?
A promotion to knight is occasionally useful, particularly if the knight can give immediate check. A promotion to a rook is occasionally necessary to avoid a draw by immediate stalemate that would occur if the promotion was to a queen.
What does an upside down rook represent in chess?
If an extra queen is unavailable, it is often represented by an upside-down rook instead, though this convention is not universally recognized in organized play. The diagram from the game between Bobby Fischer and Tigran Petrosian in the 1959 Candidates Tournament shows a position in which each side has two queens.
