Marshall Trap

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This article uses algebraic notation to describe chess moves.
Image:chess zhor 26.png
Image:chess zver 26.png a8 rd b8 nd c8 d8 qd e8 f8 rd g8 kd h8 Image:chess zver 26.png
a7 pd b7 pd c7 pd d7 e7 f7 g7 pd h7 pd
a6 b6 c6 d6 bd e6 f6 g6 h6
a5 b5 c5 d5 pl e5 f5 pd g5 h5
a4 b4 c4 d4 pl e4 nd f4 g4 bd h4
a3 b3 c3 d3 bl e3 f3 nl g3 h3
a2 pl b2 pl c2 d2 e2 f2 pl g2 pl h2 pl
a1 rl b1 nl c1 bl d1 ql e1 rl f1 g1 kl h1
Image:chess zhor 26.png
Position after 10.Re1?
Black wins with 10...Bxh2+!

The Marshall Trap is a chess opening trap in Petrov's Defence named after Frank Marshall.

The trap begins with the moves

1. e4 e5
2. Nf3 Nf6

Black plays Petrov's Defence.

3. Nxe5 d6
4. Nf3 Nxe4
5. d4 d5
6. Bd3 Bd6
7. 0-0 0-0
8. c4 Bg4
9. cxd5 f5
10. Re1?

(See diagram.) White should play 10.Nc3 instead.

10. ... Bxh2+!

An unexpected blow.

11. Kxh2 Nxf2

Black forks the white queen and bishop, forcing the queen to move.

12. Qe2 Nxd3
13. Qxd3 Bxf3

Black threatens ...Qh4+ forking the white king and rook, winning material.

[edit] References