DIAGRAM 27.

However, White wins easily through (2) Ktxh6+. If Black takes the
Knight, White mates with Qxh6 and Q-g7. If Black does not take
but plays K-h7, White goes back with the Knight to f5, again
threatening Q-g5 and Qxg7. (3) ..., R-g8 is of no avail, as (4)
Q-g5 threatens mate of h5 which can only be prevented by either
P-g6 or a move with the Rook, after which White mates by either
Q-h6 or Qxg7.

It remains to show some examples of the cooperation of Rooks with
other pieces. Diagram 27 shows one of the positions in which the
beginner is frequently caught.

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