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Emil Joseph Diemer vs Hermann Halosar
? (1934)
Blackmar-Diemer Gambit: Ryder Gambit (D00)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-10-04  Dick Brain: That's one move before the knight went to b5. My point is that this may have been an unforced error.
Feb-10-04  InspiredByMorphy: One should remember what white plays here in case black plays this.
Jan-15-05  Greginctw: i had a game that happened exactly like this! I wonder if having viewed this game before helped me see the continuation. My opponent was pretty bad, but still it was a cool victory for me.
May-08-05  The Skink: Doesn't 8...Na6 hold?
May-08-05  Karpova: 8...na6 9.qb7:
May-08-05  The Skink: 9...Qe4?
May-08-05  Karpova: 9...qe4? 10.nc7:+ nc7: 11.qc7: and if 11...qe3:+ 12.kb1 and i don't see what black can do against the threats bb5+ and qc6+
May-08-05  sneaky pete: 12... Qb6 and then? Diemer claims 10.Qxa6 Qxe3+ 11.Kb1 .. wins, but I doubt it (11... Qc5).
May-08-05  sneaky pete: After examining the position, I now do believe white is winning after 10.Qxa6 Qxe3+ 11.Kb1 Qc5 12.Qb7 .. when black won't be able to develop Bf8 and Rh8 or bring his king into safety. It seems 7... Bg4? loses by force and 7... c6 is the only playable move here.
Jun-08-05  fgh: <sneaky pete>: What would you play after 12. Qa5?
Jun-08-05  sneaky pete: <fgh> The position under discussion appears after 8... Na6 9.Qxb7 Qe4 10.Qxa6 Qxe3+ 11.Kb1 Qc5. If now 12.Qa5 Rc8 white may still get some advantage after 13.Qxa7 .. but 12.Qb7 .. looks more convincing. 12... Rc8 13.Nxa7 .. (threat 14.Bb5+ ..) or 12... Bxd1 13.Qxa8+ Kd7 14.Nc3 Bg4 (14... Qe1 15.Bb5+ ..) 15.Nf3 .. does not inspire confidence.
Nov-05-05  elahevad: Black's resignation is premature. In the line discussed by Karpova, after 12. kb1,12. ... Qb6. The threat of Qc6+ is gone. If 13. Bb5+ Qxb5 and black is ahead by 6 points.
Nov-06-05  sneaky pete: Black, whose name is not Holozar but H Halosar, didn't resign at this point. 8... Na6 9.Qxb7 Rc8(?) 10.Qxa6 .. and some more unrecorded moves were played. After the better move 9... Qe4 white can play 10.Qxa6 .. with a winning attack.
Nov-20-05  elahevad: what about 10. ... Bxd1?
if 11. Kxd1 Rd8+! or if 11. Nxc7+ Kd8 and the knight can't capture the rook because of 12. Nxa8 Qxc2 mate

I don't see white as having a winning attack here.

Nov-21-05  sneaky pete: <elahevad> The attack is based on better development. If 8... Na6 9.Qxb7 Qe4 10.Qxa6 Bxd1 11.Kxd1 Rd8+ 12.Bd2 .. white has two pieces for the rook, is threatening 13.Nxc7+ Kd7 14.Qxa7 .. and is ready to develop Bf1, Ng1 and Rh1, whereas Bf8 and Rh8 will remain inactive until the bitter end, so in effect white is playing with 3 extra pieces.
Aug-11-06  Chess Lou Zer: Without looking, find the best move after 7...Bg4. What a beauty!
Aug-30-06  Manic: A major trap that every Ryder Gambit player needs to know. Many amateurs will instantly play 7...Bg4 because it seems to win the exchange, but 8.Nb5! gives white a huge advantage.
Nov-30-06  Rubenus: I am thinking about playing the Blackmar-Diemer very often, and I analysed this trap. I found 8...Qxb5 9. Bxb5+ c6 and white doesn't have real advantage. Can someone help me?

Nov-30-06  sneaky pete: <Rubenus> After 8... Qxb5 9.Bxb5+ c6 10.Qf4 Bxd1 (.. cxb5 11.Qc7 .. is no better) 11.Qc7 Nbd7 12.Qxb7 .. white's material advantage is real enough. If 12... Rb8 13.Qxc6 Bg4/Bh5 14.Bxa7 .. winning the another exchange, he ends up with queen and extra pawn against knight and bishop.
Nov-30-06  Rubenus: <sneaky pete> Okay, thank you very much!
Dec-03-08  hedgeh0g: The Halosar trap, according to Wikipedia. Although seeing as it was Diemer who laid the trap, surely it should bear his name instead.
Premium Chessgames Member
  Eric Schiller: 6...Qg4 7.Qf2 e5! is generally considered the refutation, but I think there is an improvement for White after 8. Nf3 Bb4 9.Nxe5 Qe4 10.Nc4 Bxc3+ 11.bxc3 Be6 ("White has nothing for the pawn" -- Gallagher) 12. Bd3 Qc6 13. Qe2 0-0 with a decisive advantage. (Rizzitano) but he doesn't consider 13.Bd4! idea 13...Bxc4 14.Qe2 check instead of Qe2?!
Nov-30-10  bastiaan0740: line.
Jan-19-13  Vatnos: The Halosar Trap is even more potent when you arrive at it from the delayed Ryder gambit (Teichmann Exchange). Without the light-squared bishop to defend, Black is hopelessly lost if he plays Qb4.

@hedgeh0g: Diemer named each defense he encountered after the first person that played it against him.

Premium Chessgames Member
  tpstar: The Halosar Trap

The Ryder Gambit is a risky two Pawn sacrifice, yet it works if Black were to be a moron. ;>D

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