Pierre Drumare and Raymond Le Pontois
1.Kd2 Ke4 2.Sc5+ Ke4 3.Sxe6+ fxe6 4.f7 Ke4 5.f8B Kf4 6.Ba3 Ke4 7.Bc1 Kf4 8.Kd3. If 3...Ke4 4.Sc5+ Ke4 5.e6 fxe6 6.f7 e5 7.f8Q.
In the Herlin theme, first shown by Théodore Herlin in 1845, the firing piece of a battery moves on to the battery line, then the rear piece performs a pericritical manoeuvre to arrive on the line. The underpromotion adds a neat twist.