Queen's Gambit Declined: Normal Defense

4. e3 Be7 5. cxd5 exd5 6. Bd3 O-O 7. Nf3 c6

4. Bf4

4. Nf3 Be7 5. Bf4 O-O 6. e3 c6

4. Bg5

4. Nf3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Bd6

4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bb5

4. Nf3 c5 5. Bg5

4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Qa5

4. Nf3 c5 5. e3 Nc6 6. Bd3 Bd6 7. O-O O-O

4. Nf3 Be7 5. e3 O-O