[FEN "rnbqkb1r/ppp1pppp/5n2/3p4/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq"]

3... dxc4 4. e3 e6 5. Nf3 a6 6. a4 c5 7. Bxc4 Nc6 8. O-O


w b wb bw | w b wb bw

b     an



3...dxc4      an



4. e3      an



4...e6      an



5. Nf3      an



5...a6      an



6. a4      an



6...c5      an



7. Bxc4      an



7...Nc6      an



8. O-O      an