1.e4,c5 2.Nf3,Nc6 3.d4,cxd4 4.Nxd4 and now 4...,e5

Black plays Nf6 only after the white c1 bishop has played to avoid Bg5.

6.N1c3 (knight in front of the c-pawn)

Example: AiyathuraiJ-HilhorstG
GM Nakamura also takes on d5 with the c-pawn: Nakamura-Radjabov

GM Carlsen chooses to take on d5 with the e-pawn: Carlsen-Radjabov
Following that example until move 14: CastanedaA-HilhorstG and another version: CastanedaA-HilhorstG

Some take on d5 with the queen: BourqueM-HilhorstG

Some do not have that choice because the knight on d5 is not supported by the c-pawn: RozovskyD-HilhorstG

White plays Bg5 anyway

6.c4 (c-pawn in front of the knight)

Other 6th moves for white

Games