1. The Diagonal Battery
Duijker vs. Muhren
The Formation: Queen + Bishop on the b1-h7 diagonal.
1. Qg6! hxg5
2. Be4!
White moves the Bishop to e4. Now, the Queen (on g6) and Bishop (on e4) form a deadly battery aiming straight at h7. Black is helpless against the threat of `Qh7#`.
2. The Dynamic Battery
Inkiov vs. Jovanic
The Formation: Coordinating checks.
1...Nxg2! 2.Kxg2 Bh3+!
3.Kg3 Bd8
Black sacrifices the Knight to open the King. Then, the Bishop (`Bh3`) and Queen coordinate to hunt the White King down, eventually mating with `Bh4#`.