Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. exd5

= Caro-Kann Defence: Exchange Variation = White exchanges on d5, and black almost always responds with cxd5. This forms opposite-wing majorities. This usually will lead into a Panov-Botvinnik Attack, although independent lines can arise after 4.Bd3.

Theory table
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1.e4 c6 2.d4 d5 3.exd5