Halosar Trap

Blackmar Diemar Gambit

The Blackmar Diemar Gambit is characterised by the move 1. d4 d5 2.e4 dxe4 3.Nc3

It is an agressive opening with white sacrificing a pawn to develop his pieces.

Thank you for this.  I am obsessed with variations of Blackburne's Jerome Gambit discreditation (he plays black) and this is dissimilar, but equally dramatic.

I believe the Halosar trap is 4...Bg4 5.Nb5

I mean, not in actual move order, but the numbers in your puzzle.

agreed. no e5

1. f3exf32. Qxf3Qxd43. Be3Qb44. O-O-Oe55. Nb5Bg46. Nxc7+Ke77. Qxb7Qxb78. Bc5#

After pawn to f3, my opponent responded with bishop to f5 and then I lost, due to losing a pawn for nothing.

4.f3 Bf5 5.fxe4 Nxe4 6. Qf3! with an interesting position...

Was able to figure it out first try no mistakes in ~10 seconds lol.

Hi, after knight b5 my opponent responded knight c6, and then i did knight c7+, he played king e7, and i didn't know what to do next

interesting

Visited a really great post today , but my blog post covers similar and couple of more points , you are most welcome to check out mine .

https://chessofy.blogspot.com/2020/10/Halosar-trap.html?m=1

what happened if 5.na6

Actually, Halosar Trap Chess is derived from the BDG & the most offensive line of Halosartrap is "Ryder Gambit".

Beg to disagree, the Halosar trap is a variant of the Ryder Gambit, so the logic is:

BDG with main line 5.Nxf3 ... and Ryder Gambit 5.Qxf3 Qxd4 6.Be3 Qg4 ... but 6...Qb4? (idea: attack b2 and defend b7) => Halosar trap after 7.O-O-O Bg4? (idea: win Q or R, but): 8.Nb5! (protected by B so Q can't take, and threatening mate with 9.Nxc7#) , now black has to play 9...Na6 to control c7 (or sac the Q against the N) and then W wins that N after the b-pawn with 9.Qxb7.

I hav problem. I don't kno wat to do after dis.

How do I play trap? How do I win?

I sometimes play the probably dubious but deceptively venomous Blackmar-Diemer Gambit as a change from the Queen's Gambit. It is fun and at my level (upper intermediate to lower advanced OTB) often gives white very active and well coordinated pieces as well as nice open d, e and/or f files to attack with rooks. I don't play it to spring the Halosar Trap generally as I think Nxf3 is objectively much better than the dubious but tempting Qxf3 at which point the trap is set. That said, however, I sometimes can't resist trying it on, but I've only managed to pull off this trap twice in a couple of hundred BDGs, both funnily enough this week.

#16 you don't, thats why Qxf3 and the gambit in general are dubious, Black will have a very easy time developing and 2 pawns are a lot