White plays his 14th move, f4, engine says it’s a blunder from winning for white to about -6.0... why is that and how am I supposed to calculate that much moves In advanced...?
@Pinned786 You lost your bishop because your move.
Not only it loses a piece in this case but the construction d5-e4-f4-Bg5 is fragile in general and sometimes simply dubious, the bishop gets hit by h6 or f6, the dark squares are weakened and the f4 pawn is vulnerable. One of Aagard's books features the game Korchnoi - Nunn, Rejkjavik 1988 where the bishop gets in trouble with Nh5 then f6.
@Pinned786 said in #1:
> how am I supposed to calculate that much moves In advanced...?
*Hangs Bishop in 1 move*
