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...e6/7. Bxc4/7...Bb4/8. O-O/8...O-O/9. Qe2/9...Nbd7
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Dutch variation D19 Dutch variation Euwe variation
9...Nbd7
This move develops the knight to it's most natural square, but also invites White to play /10. e4/. This move also sets up Nb6, attacking the light-squared bishop and uncovering the black queen's attack on the d4-pawn. This tactic can cost White a pawn if they are not careful with their pawn-advance.
Theory table
10. e4 Bg6 11. Bd3 Bh5 12. e5 Nd5 +
References
See also