Is this the position from TCEC Season 18, Game 80 a win or a draw? This position from move 42 of TCEC Season 18 Game 80, with Black to move. Is it a win or a draw?
[FEN &quot;8/1k5p/1P3pp1/K1P2b2/5P1P/8/8/2B5 b - - 0 1&quot;]
The key point in this endgame is that the bishops are of opposite colours. It is a trivial draw. White is a pawn up but with nothing more than barely competent play by black, white will never be able to advance his pawns. The black king can never be moved from b7 and the black bishop can take station on the diagonal between c6 and h1 making the pawn move c6 impossible. Black will also play h5 at some stage leaving him with only the g6 pawn to protect. The f6 pawn is an irrelevance.
To be able to win an opposite coloured bishop endgame one player has to have two passed pawns separated by a minimum number of files. That isn't the case here. The problem for the side with the extra pawns is that the opposing king and bishop can always blockade the colour of the bishop and the attacking bishop cannot help.