In chess rules, once the pawn reaches 8th position, the player can take a Bishop even when he/she has the same square colour bishop?
I mean Can a player have same colour bishops on the chess board?
Example : Player has a single white square colour bishop. His/Her pawn reaches the 8th position where he can opt for a Queen,Rook, Knight,Bishop but where the pawn reaches the square is a white colour square, so can he take a Bishop which is occupying white square colour? If Yes, then there will be two bishops of White colour square for the player. Do Chess rules allow this?
If Yes, Why? If No, Why?