D13White3 book lines continue
Exchange Variation, Schallopp Variation
Slav Defense1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Nc3
Also known as Slav: 4.e3 Bf5 5.cxd5 cxd5 6.Nc3, Slav Defense, Exchange Variation, Amsterdam Variation, Slav.