The Halosar Trap: Win in 9 moves!!

The Halosar Trap derives from the Blackmar-Diemer Gambit. In the Blackmar-Diemer Gambit, white looks to gambit off his king’s pawn on e4. The most aggressive line (the Ryder Gambit) places the white queen on f3 and gives away an additional pawn on the d4 square. If black captures this pawn he is getting closer to falling for the Halosar Trap. 

Ok, so now let's understand it's history.

The chess player Hermann Halosar has a trap named after him called the Halosar Trap, but there seems to be very little information about the man himself. I've checked this site, Wikipedia and google but all that comes up is a few games including the well known game against Emil Diemer(1934). 

Well, after some research I found out about their game. Hermann Halosar played Emil diemer in 1934 when Hermann resigned on move 10. Also, Emil, his opponent was going to check mate by 2 ways and that could not be stopped. This game gave birth to a new trap called the Halosar trap . Here I am inserting the game which they played.

Ok so this when he resigned so how can we check mate black?

Let me explain this.

We start with the queen's pawn opening 1.d4 d5. Then we offer our pawn on e4 and black takes it gleefully. This opening is popularly know as the Blackmar-Diemer Gambit. 

Now we play knight to c3 attacking the e4 pawn. Then black defends it with a very natural move knight to f6. We will now offer another pawn by playing f3. Black naturally takes with his e4 pawn. Now the standard reply would be to take with the knight but we are going to take it with the queen. By playing this we are offering another pawn which is on d4. This is what we call the Ryder gambit or Halosar trap. Black takes the pawn with his queen. We gambited another pawn to open the d file to bring the rook out and attack the king. So we bring our bishop to e3 attacking the queen and at the same time, preparing to castle in order too bring our rook out to attack in the d file.

Let's look at this from black's perspective. He obviously has to move his queen because it is under attack, and he knows that we are going to castle. Black now has a cheeky little trap here. He can take his queen to b4 attacking the pawn on b2 and pinning the horse to the king. And if we castle, he can bring out his bishop to g4 skewing the queen and rook. That would be trouble for you, right? Well let's see.

So he plays queen to B4 a very natural move. We know what he is going to do so lets invite him. We simply castle on the queens side. Black is on top of the moon, thinking he got you. But in reality we got him. If he goes ahead and plays bishop to g4, he is gone. After black moves his bishop, we are going to play the crushing move knight to b5. You might think I am crazy but you will see. Black thinks we blundered and being over-excited takes your queen. 

Guess What? we are going to play knight to c7 which is a beautiful check and mate. I am inserting the diagram to help you understand it better. 

What can black do to prevent this?

Going Back, if black plays the queen to g4 instead of b4 white looks to exchange the queen and prevent the trap. This would significantly lower the impact. 

This is a diagram showing how black can prevent.

Let me know in the comments if there can be more ways to prevent the checkmate. Also Follow me for daily blogs. I post here daily so you can easily learn new tactics.

THANK YOU!!