From Black's next move, Q-d7, it is indeed apparent that he has
decided on a maneuver of this kind. The game continued: (10) P-
c3, Bxf3; (11) Pxf3, Q-h3; (12) Kt-g3, P-h5; (13) B-e3. He cannot
play R-e1 on account of Bxf2+ followed by Qxh2+ and Qxg3. (13)
..., P-h4; (14) Kt-h1, R-h6 and wins, for if White takes the
Rook, Pxh6 opens the g-file and the other Rook occupies it with
deadly effect.

In the last example it was easy for the Rooks to take an active
part in the battle because a file was open which enabled them to
bear down on the opposing King.

+---------------------------------------+
8 | #R | | #B | #Q | | #R | #K | |
|---------------------------------------|
7 | | #P | | #P | #Kt| #P | #B | #P |
|---------------------------------------|
6 | #P | | #Kt| | #P | | #P | |
|---------------------------------------|
5 | | | #P | | | | ^B | |
|---------------------------------------|
4 | | | ^B | | ^P | | | |
|---------------------------------------|
3 | | | ^Kt| ^P | | ^Kt| | |
|---------------------------------------|
2 | ^P | ^P | ^P | ^Q | | ^P | ^P | ^P |
|---------------------------------------|
1 | | | ^K | ^R | | | | ^R |
+---------------------------------------+