Ba4 b5 Black forks the white bishop and knight, winning a piece for two pawns.

The white bishop is positioned so that the next two moves, gaining control of g8, are possible.

He still has his pawn, although the white bishops can become dangerous.

Note, however, that 1...h6 in this example would not do the job, as after the d3-rook moves, the h7-square is covered by the white bishop.

Thus, the white bishop had lost most of its effectiveness.

Then, representing Quelby, he took the white bishop with a black knight.

Therefore the bulletin board turned its attention to 37...e5, driving away the white bishop and clearing the way for Ne7.

In an alternative line, Black can win the white bishop:

Wilson's body had a small burn mark on his left hand and was also clutching a white bishop when he died, part of Savaronoff's set.

He would also have been able to exchange off one of the strong white bishops.