I still dont understand the problem, what happened after 1 bc3 Ne5 2 fe5 for instance.
By the way, when I click on "switch to analysis" nothing happens. How should I use this feature ?
1 bc3 Ne5 2 fe5 continues (according to the engine):
.. Qxd5 3 e4 fxe4 4 Be2 e3 5 Rf3 (Bf3 leads to same outcome) Rxf3 6 Bxf3 Qxf3 7 Qxf3 Bxf3
So the bishop is still done for. It seems the computer has seen that after the initial move the loss of a piece is inevitable.
The show analysis button extends the move sequence to show the computer's predicted best line after the tactic moves finish. After you click it , you should be able to move further forward through the move sequences.
Regards,
Richard.