This week's longer games included a pawnless rook vs bishop ending which finished in a draw. The defender knew the technique of heading the king to the corner not controlled by the bishop. There was a knight and bishop checkmate, and some interesting queen and pawn and rook and pawn endings, including R + e and f pawns vs R which ended in a draw. I must admit, I don't know the theory of these endings, but roughly know that f and h pawns are mostly draws, and a and h pawns are mostly draws. It is something worth looking at to build my technique.
I was most interested in the following position, not least because a GM was getting bashed by someone 300 rating points lower.
I would imagine time was a factor here as white is about to play his 61st move. White will definitely lose their a-pawn, but can win material on the king side, which should be enough for victory. The best first move is 61.Ng7, when black's f-pawn falls. However, white played 61.Nd4+ and black traded on d4 going into a lost king and pawn endgame. 61..Bxd4 62.exd4 (to be fair, keeping the minor pieces on didn't hold out much hope either).
However, this game ended in a draw after both sides promoted. From the diagram the game continued 62..Kb5 63.Ke2 Kxa5 64.Ke3 Kb5 65.Kf4 Kc6 when we get to the key position.
White now played the natural 66.Kxf5? missing the finesse 66.Ke5! when black's king will be forced away from d5 meaning that white will be able to capture both f and e pawns (and g and h if he wants). After the text move black promotes the b-pawn in 8 while white promotes the g-pawn in 7, but it is black to move so they promote at the same time. This leaves a dreaded queen and pawn ending which are notoriously difficult to win.
So once again, a natural looking move, a capture, turns out to be not the best move. A simple finesse of the king would have led to victory for white against a player 300 points higher rated. Still, a draw was not a bad result for the white player.