Sicilian 2Nc3 Nc6 3Bb5!? trap

This occurs after 1e4 c5 2Nc3 Nc6  3Bb5 Nd4 4Bc4

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4..g6 5 Nge2 Bg7 6 Nd4 cd4 7Qf3! 

Here Black can play 7..Nh6 or 7..Nf6 but the most natural human move is 7..e6?! which leads to the trap White has set up !

7..e6?! 8 Nb5 d6 9Qa3!

Black has to defend d6 and play 9..Ke7

White has exploited the weaknesses of dark squares after 5..Bg7 by targetting c7 and d6 playing Nb5 as Black didn't have time to play a7-a6.

after 9..Ke7 10c3! white is better. You Hifan won against Pia Cramling in 19 moves.

Note that Black can try 8..d5 instead of 8..d6 but White has 9Qg3! with Nc7+ winning the exchange.

Opening Traps : Sicilian Defense

Here I want to cover 2 openings

1 e4 c5 2 d4 cd4 3c3 Morra-Smith Gambit . Morra was a french player from Nice,France (1900-1969) who studied the opening and played it in correspondence games. 

 1e4 c5 2Nf3 Nc6 3Bb5 is the Rossolimo (You could play Bb5 against d6 as well).

and here you could see 21 lines containing many traps and quick wins in the morra gambit as well as in the Rossolimo opening.