# 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...Qb6/8. Qd2/8...Qxb2/9. Rb1/9...Qa3

< 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...Qb6‎ | 8. Qd2‎ | 8...Qxb2‎ | 9. Rb1
Poisoned Pawn Variation
 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation(FEN)

rnb1kb1r/1p3ppp/p2ppn2/6B1/3NPP2/q1N5/P1PQ2PP/1R2KB1R

# Sicilian Defence, Poisoned Pawn Variation

This is the only move for Black's queen, and so should be self explanatory. Another move, 9...Nxe4? drops a piece not to 10.Nxe4?? Qxb1+ and Black is winning, but 10.Rxb2 Nxd2 11.Kxd2 and White is winning.

Here White has a few choices. The most popular is 10.f5, applying direct pressure to e6. Then Black usually plays 10...Nc6 11.fxe6 fxe6 12.Nxc6 bxc6 13.e5 dxe5 14.Bxf6 gxf6 15.Ne4, when Black's best is 15...Qxa2 (or 15...Be7 16.Be2 h5 17.Rf1!, with a strong attack).

White's other choices are 10.e5 and 10.Bxf6.

## Theory table

For explanation of theory tables see theory table and for notation see algebraic notation.

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5. Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2 9.Rb1 Qa3

10 11 12 13 14 15 16
f5
Nc6
fxe6
fxe6
Nxc6
bxc6
e5
dxe5
Bxf6
gxf6
Ne4
Qxa2
Rd1
Be7
=
Bxf6
gxf6
Be2
Nc6
Nxc6
bxc6
O-O
Qa5
Kh1
Be7
f5
h5
Bf3
Kf8
=/+
e5
dxe5
fxe5
Nfd7
Ne4
h6
Bh4
Qxa2
Rd1
Qd5
Qe3
Qxe5
Be2
Bc5
=