Where is the blunder that White made? [Event &quot;the_meayhi vs. oxygen2020&quot;]
[Site &quot;Chess.com&quot;]
[Date &quot;2020-08-16&quot;]
[White &quot;the_meayhi&quot;]
[Black &quot;oxygen2020&quot;]
[Result &quot;1-0&quot;]
[WhiteElo &quot;810&quot;]
[BlackElo &quot;1032&quot;]
[TimeControl &quot;blitz&quot;]
[Termination &quot;the_meayhi won by resignation&quot;]
[fen &quot;&quot;]

1. d4 d5 2. Bf4 c5 3. dxc5 e6 4. Bxb8 Rxb8 5. e3 Bxc5 6. Nc3 Ne7 7. Nf3 Bd6 8. Qd4 O-O 9. Bd3 a6 10. Qh4 g6 11. Ng5 h5 12. g4 Nf5 13. Bxf5 1-0

Despite the result of the game, te chess.com engine says that White blundered. It also says that one player was winning and blundered it away. What do those mean?
Your last move 13.Bxf5 leaves you with a much smaller advantage than 13.gxf5, that's what the engine is counting as a &quot;blunder&quot; (some of the previous moves have smaller mistakes, but none of them should be counted as &quot;blunders&quot;)