Traps in Sound Position

[Black "The Magnus Smith Trap (Sicilian Defense)"]{
The Magnus Smith Trap is a chess opening trap in the Sicilian Defense, named after three-time Canadian chess champion Magnus Smith (1869–1934).

The trap occurs in the Sozin Variation, beginning with the moves}

1. e4 c5
2. Nf3 d6
3. d4 cxd4
4. Nxd4 Nf6
5. Nc3 Nc6
6. Bc4
{This is the Sozin (or Fischer) Variation of the Sicilian Defense. A common response is 6...e6, to make White's bishop on c4 "bite on granite". By playing 6...g6?!, Black falls into the trap.}

6. ... g6?!
7. Nxc6 bxc6
8. e5!
{Black is in a bad way. After 8...Nh5?, Bobby Fischer gives 9.Qf3! e6 (9...d5 10.Nxd5!) 10.g4 Ng7 11.Ne4 Qa5+ (11...d5 12.Nf6+ Ke7 13.Qa3+) 12.Bd2 Qxe5 13.Bc3 and Black's queen is trapped. Probably best for Black is 8...Ng4 9.e6 f5, and Black eventually managed to draw in Schlechter-Lasker, World Championship (7) 1910. The move Black actually chooses leads to instant disaster.}

8. ... dxe5??
9. Bxf7+
{White wins Black's queen.}

[Black "The Monticelli Trap (Bogo-Indian Defence)"]{
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!

{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.}

COOL

Kostics Trap
1.e4 e5
2.Nf3 Nc6
3.Bc4 Nc6d4
4.Nxe5 Qd8g5
5.Nxf7 Qxg2
6.Rh1f1 Qxe4
7.Bc4e2 Nf3

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