Closed Sicillian (Trap#1)

1. e4 c5
2. c3 d6
3. d4 cxd4
4. cxd4 Nc6
5. Nf3 Bg4?
6. d5 Ne4
7. Nxe4 (White wins a piece here ...)
.. Bxd1
8. Bb5+ Qd7
9. Nxd7 Bg4
10. Nxf8+ Kxf8
11. O-O & White will win with the extra piece. Black cannot castle and will experience difficulties developing the Castle on h8.