The following chess position was reached from a Catalan Opening in a rapid game played at the Internet Chess Club. White had just played Qh6 intending to answer Qxe5 with Bd4 threatening the Queen and a mate at g7 at the same time!
Do you see a hole or a fault in the above analysis? Both Black and White thought that capturing the pawn at e5 lost on the spot, i.e. both sides were committing a mutual blunder in their mind’s eye.
It turned out that Black could capture at e5 with impunity due to the counter-stroke Bg5 attacking the White Lady (Gosh chess has such a savage female degrading vernacular!). Sometimes the Royal game is as easy as “If you attack me then I will attack you”. One could say chess obeys the fight or flee law of organism survival.
So in this position, Black should have fought with his Bishop, playing Bg5, rather than fleeing with his Queen after Bd4!