411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d5/2. c4/2...c6/3. Nf3/3...Nf6/4. Nc3/4...dxc4/5. a4/5...Bf5/6. e3/6...e6
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Dutch Variation D18-D19 Dutch Variation Euwe Variation
6...e6
Black prepares to develop the dark-squared bishop to the b4-square, which was weakened by White's move 5. a4.
White can now simply recapture the c-pawn with /7. Bxc4/.
Theory table
7. Bxc4 Bb4 8. O-O +
References
See also