king bishop vs king rook is a draw inevitable

if no one blunders is a draw inevitable

No the game may go on but if its in this case then yes its worth taking a draw.

It often comes down to this crucial distinction (which is why if you, as the defending side, have to run toward the corner, pick the one with the different-colored square than your bishop):

Cant see your diagrams Andy, but yeah, it's very easy to screw this up. I'd play it out aginst almost anybody if I had the Rook.

And the other one (AKA Crucial Distinction, Part II):

the second diagram yes, the 1st white wins

thanks andy for the learining

nice one

Great learning thanks

any clifton that was very valuable advise

Click on these links (the first one is to download a pdf file on K+R vs K+B endings)

http://www.chesskit.com/training/endgame/KRkb/1/index.php

sci.brooklyn.cuny.edu/~kopec/Publications/Publications/O_29_C.pdf  

http://zomobo.net/rook-and-bishop-versus-rook-endgame

http://chessstuff.blogspot.com/2005/04/rook-vs-bishop-4-endings.html

http://gameknot.com/annotation.pl/complicated-endgame-study-no-2?gm=8809

If the person with the bishop, knows how to play, its a draw.

Rook versus a bishop: this is usually a draw. The main exception is when the defending king is trapped in a corner that is of the same color square as his bishop (Nunn 2002a:31) (see Wrong bishop#Rook versus bishop). If the defending king is trapped in a corner that is the opposite color as his bishop, he draws (seeFortress_(chess)#Fortress in a corner). See the game of Veselin Topalov versus Judit Polgar, where Topalov defended and drew the game to clinch a win of their2008 Dos Hermanas match.^[7]

https://en.wikipedia.org/wiki/Pawnless_chess_endgame#Rooks_and_minor_pieces

thanks nimzoRoy

great stuff

I played a rook and bishop ending against someone in a tournament, I was the rook , and I won.