Monticelli 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 b8 c8 d8 e8 f8 g8 h8
a7 b7 c7 d7 e7 f7 g7 h7
a6 b6 c6 d6 e6 f6 g6 h6
a5 b5 c5 d5 e5 f5 g5 h5
a4 b4 c4 d4 e4 f4 g4 h4
a3 b3 c3 d3 e3 f3 g3 h3
a2 b2 c2 d2 e2 f2 g2 h2
a1 b1 c1 d1 e1 f1 g1 h1
Image:chess_zver_26.png
Image:chess_zhor_26.png
Position after 10.Ng5!

The Monticelli Trap is a chess opening trap in the Bogo-Indian Defence, that experts once claimed was irrefutable.

The trap begins with the moves

1. d4 Nf6
2. c4 e6

Black plays the Indian Defence.

3. Nf3 Bb4+

Black plays the Bogo-Indian-Defence.

4. Bd2 Bxd2+
5. Qxd2 b6
6. g3 Bb7
7. Bg2 O-O
8. Nc3 Ne4
9. Qc2 Nxc3
10. Ng5!

(See diagram.)

Black must respond to two different threats: the mate threat 11. Qxh7# and 11. Bxb7 winning a bishop and a rook.

However, chess legend José Raúl Capablanca (Black) showed this trap wasn't so irrefutable when he drew in a game against fellow legend Max Euwe (White) in 1931 (Amsterdam).

Capablanca responded with

10.. Ne4
11.Bxe4 Bxe4
12.Qxe4 Qxg5
13.Qxa8 Nc6
14.Qb7 Nxd4
15.Rd1 c5
16.e3 Nc2+
17.Kd2 Qf5
18.Qg2 Nb4
19.e4 Qf6
20.Kc1 Nxa2+
21.Kb1 Nb4
22.Rxd7 Nc6
23.f4 e5
24.Rhd1 Nd4
25.Rxa7 exf4
26.gxf4 Qxf4
27.Re1 Nf3
28.Re2 Nd4
29.Re1 (½-½).

Nonetheless, this trap is still a massive blow to most opponents.

[edit] References