The eminent French composer René Millour died last June. He is probably
best known for complex fairies and retros, and his love of promotion
themes. This is an example of his orthodox style.
1.Ba5 sets up a zugzwang. The two leading variations show the Holst theme, where Black is induced to promote to queen or knight, after which White exploits the fact that the pawn can no longer promote to the other piece.