What's more valuable rook or bishop?

#37 Bourbon53 describes very well :)

which one is best? Depends

A rook is stronger in almost every endgame. Even if a rook is very bad at first, it will come to life later.

You can turn your rook upside down, so it can move like a queen. I'd pick a rook over a bishop in most circumstances because of that feature.

A Knight and Bishop can checkmate a lone king with support from your own king, but depending on the positions of all the pieces it can take more than 50 moves to do so. And there is absolutely no room for error.

#45

According to Wikipedia, the maximum amount of moves is thirty, so the knight and bishop vs king is safe from the 50 move rule.

Source: http://en.wikipedia.org/wiki/Bishop_and_knight_checkmate

Cool. I was wrong. not that I've encountered that endgame from either side anyway in 10+ years of playing. I thought I read that it could take more than 50, probably I read that imperfect play could take you into 50+ moves and just remembered incorrectly. Thanks BB

forcing your opponent to mate you with K+B can be a good practical bet, as not even all GM's can do it in 50 moves

sorry ,N+B ofc

yeah,but I still would chose two rooks over two bishops in an endgame.