continues with (3) R-e8. This threatens Rxf8+, Kxf8; Ktxh7+
winning the Queen. Black cannot defend himself with Q-g6 on
account of (4) B-d3 followed by Bxh7+ and Rxf8, etc., nor can he
play (3) ..., Q-f4 on account of P-g3 followed by Qxd6, attacking
the defenseless Rook f8.

A sacrifice with the view to enabling a mating attack through the
cooperation of Rooks and Bishop somewhat similar to the examples
discussed in the previous chapter is possible in the position of
Diagram 41 which occurred in a Tournament game in London in which
the author conducted the black men.

Black's combination starts with the sacrifice of the Queen on f3.
After (1) ..., Qxf3; (2) Pxf3, B-h3+; (3) K-g1 White's King is
held in an immobile position by the Black Bishop and a check with
one of Black's Rooks in the g-file would be deadly.

However, White can, for a while, protect himself against all
mating attempts of Black. If Black continued (3 ) ..., R-e6,
White would take the Pawn d3 with the Queen thereby defending
the mate R-g6. After giving up his Queen for one of Black's Rooks
White would still have an advantage in material.

The correct way to carry on the attack is (3) ..., Ra8-e8, as
then White cannot take the Pawn d3 on account of R-e1+; Q-f1,
Rxf1+; Rxf1, R-e6 and R-g6 mate.

+---------------------------------------+
8 | #R | | #B | | | | #K | |
|---------------------------------------|