[Event "Exchange Slav White Rep: Tabiya"]
[Site "https://lichess.org/study/JaNcrbkF/PqjSd5ie"]
[Result "*"]
[Variant "Standard"]
[ECO "D10"]
[Opening "Slav Defense: Exchange Variation"]
[Annotator "https://lichess.org/@/Shrekmated"]
[UTCDate "2021.01.05"]
[UTCTime "04:03:19"]
[Source "https://lichess.org/study/JaNcrbkF/PqjSd5ie"]
[Orientation "white"]
1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nc6 (4... a6 { This will transpose to main lines. I just want to point out that there no punishment here as far as I can tell. }) 5. e3 { Avoiding complications associated with Nc3 e5. } (5. Nc3?! e5 6. Bxe5 Nxe5 7. dxe5 d4 { If white had played e3, this wouldn't have been possible. } 8. Ne4 Bb4+ $13) 5... Nf6 (5... Bf5 6. Nc3 e6 7. Be2) 6. Nc3 { Black has 3 main options here: e6, Bf5, and a6. } *