Chess Opening Theory/1. e4/1...c5/2. Nf3/2...d6/3. d4/3...cxd4/4. Nxd4/4...Nf6/5. Nc3/5...a6/6. Bg5/6...e6/7. f4/7...b5/8. e5/8...dxe5/9. fxe5/9...Qc7/10. exf6/10...Qe5/11. Be2/11...Qxg5

=Polugaevsky Variation=

Moves : 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5

White can be aggressive by /12. Bf3/ or /12. fxg7/ but the white King would be not in security. That is why, in the main line White prefers to avoid a position too complicated: /12. 0-0/ (main line)

Theory table
.

'''1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5'''