Silesian Openings
From DipWiki
Silesian Opening
Any involving the move A Ber-Sil. The following named variants exist:
Frederich Variant
Also known as the Frederich Opening, this opening was named by John Mark. France should be pleased and more inclined to move against England, and Silesia can guard Munich against A Bur-Mun just as well as Kiel can. It also gives protection against A War-Sil.
Slavic Attack
Again, Munich is the "swing." Here Germany goes after Russia and Austria, or Austria alone. Both armies threaten Galicia as well as two supply centers. Against Austria alone, A Boh-Vie, A Sil-Gal will hurt.