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Emil Joseph Diemer vs Waller
Simul (1948), Aulendorf GER
Blackmar-Diemer Gambit: Ryder Gambit (D00)  ·  1-0



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Given 34 times; par: 24 [what's this?]

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Mar-21-11  zb2cr: Not a Queen sacrifice this Monday, but a Rook!

15. Rd8+, Qxd8; 16. Qxf7#.

Mar-21-11  sevenseaman: < sethoflagos> You're telling me! I wouldn't know the difference between an opening and a defense or if there is supposed to be some.

But I do see your point. Those bishops sure are very diversionary.

However this being an OTB game and not a contrived puzzle, clearly one side has played rather poorly.

For example can anyone understand the purpose of Black's 14th move. Obviously he is off the pace or is playing by rote.

Mar-21-11  alachabre: I see a lot of stuff here that doesn't work. Trying to get a leg up on a workable combination at d8, there are moves that fail to either Nxf6 or Bd7. The "obvious" Qxh8 fails to Qxh2#. What the heck, I'll start with a move that defends and attacks at the same time:

15. Bf4 Nxf6
16. Bxc7 Bd7 (or Be7)

But what if...

15. Bf4 Bc5+

Ack. Just noticed that the attack on f7 is supported. I am blind.

15. Rd8+ Qxd8
16. Qxf7#

Mar-21-11  alachabre: <sevenseaman: Perhaps to be part of 'unsolicited advice' file of <CG> I suggest for them to add an intermediate page between the puzzle and the game.>

Nice idea, I like it. And about golf, it has its moments that suck one back. The one drive in ten that is hit just right, an approach shot that sticks six feet from the hole, sinking a long putt; precious moments. Makes one want to go shoot a golf.

Mar-21-11  alachabre: <sevenseamen: For example can anyone understand the purpose of Black's 14th move.>

It's juicy and tempting. What could possibly go wrong with a move that forks the queen and an undefended bishop (the capture of which then forks two rooks), all rolled up into a threat of mate in one! Tempting indeed.

Mar-21-11  alachabre: <Nillson FSR> Yes, 12. Qxf6 is very strong. After 12. ... Be7 13. Qf2 White has won a piece with no compensation for Black.

But in retrospect, perhaps Diemer knew his opponent, and purposefully dangled a poisoned apple before his eyes, knowing it would be snatched up and Diemer could take a long lunch break before the next round.

Mar-21-11  TheaN: <scormus: <golf?> the only golf I ever play is at those little places you see on holiday - holes about 5 yards away with little bumps, hollows, tunnels through toy buildings etc in the way. Its OK as long as you can tell yourself it just a bit of fun.>

Also known officially as minigolf. In speech the name midgetgolf is common as well.

I have to agree with you though, this is IMO an enjoyable form of golf, where the techinique is more important than environment conditions. Not to say a pro-golfer wouldn't beat an amateur minigolfer like me with minigolf, putting is pretty much the technique needed for minigolf.

Premium Chessgames Member
  patzer2: Diemer's 15.Rd8+! decoy sham sacrifice deflects the Queen to force mate-in-two.

Earlier, Black could have equalized with good counter chances with 12...Qe5! to =.

After 12...Ne5?, White missed the strong winning move 13. Qxf6!!, when play might continue 13...gxf6 14. Nxf6+ Ke7 15. Bc5+ Qd6 16. Rxd6 Nf3+ 17. Rxf3 Bg7 18. Rd7#.

Instead of 14...Ng4??, Black could have put up more resistance with 14... Rg8! when White must find 15.Be2! to to hold the advantage, as after 14...Ng4?? 15.Be2! Bg7 16. Qf2 f5 17. Bxa7 Nf7 18. Bh5! Rxa7 19. Qxa7 to .

Mar-21-11  sevenseaman: <patzer2> Excellent and interesting analysis!

<After 12...Ne5?, White missed the strong winning move 13. Qxf6!!, when play might continue 13...gxf6 14. Nxf6+ Ke7 15. Bc5+ Qd6 16. Rxd6 Nf3+ 17. Rxf3 Bg7 18. Rd7#.>

A good chess player ought to assume the opponent may not make another mistake and he needs to seize upon the earliest he does make.

Something similar in cricket; if you drop a catch off a good batsman, he may not give you another chance and end up posting a winning score or as <Once> puts it <in golf good players use fewer strokes in order to win>.

I hope you work from an engine in order to be sure of the equalization; not my strong point, I'll say.

Premium Chessgames Member
  kevin86: A double decoy! White decoys the queen away from f7---and decoys us from the usual Monday queen sac to a rook sac and MATE by the queen.
Premium Chessgames Member
  patzer2: <sevenseaman> I checked the analysis with Fritz, playing it out move-by-move to see if it made sense.
Premium Chessgames Member
  takchess: It's helpful to think of the two things at play here.

1)White Qd8 or Rd8 is mate if only black queen wasn't on c7.

2) Qxf7 is mate if only blacks queen wasn't on c7.

The solution is at the intersection of these two if only statements. Many interference puzzles are solved the same way.

Mar-21-11  DarthStapler: Got it easily
Mar-21-11  Marmot PFL: The blackmar-diemar gambit is dangerous, especially when black forgets to develop his pieces.
Premium Chessgames Member
  beenthere240: Not only do you remove the defender of the f7 square, but you also put in in the king's only flight square. A double indignity.
Premium Chessgames Member
  Penguincw: Better than last Monday's puzzle,it only took me 3 seconds to solve it.
Premium Chessgames Member
  beenthere240: I kept looking for one of those mates where there's a sac on the d8 square and then a double check with a bishop. Got it only when I became convinced that there wasn't one.
Mar-21-11  rilkefan: <<Once>: Chess courses are miracles of science.>

Hmm, I object on several grounds.

Mar-21-11  wals: Only took me 15 minutes.

Rybka 4 x 64

Major Black error

12...Ne5, +2.48. Best,

Analysis by Rybka 4 x64:d 15 : 3 mn.

1. (-1.01): 12...Be7 13.Nxf6+ Nxf6 14.Nf4 0-0 15.Nh5 Nxh5

2. (-0.62): 12...b5 13.Nxf6+ Nxf6 14.Bxb5 Bb7 15.Bc4 Bd6 16.Bf4 Bxf4 17.Nxf4 0-0 18.Nd3 Qb6+ 19.Qf2 Rad8 20.Qxb6 axb6 21.Ne5 Rxd1 22.Rxd1 b5 23.Ba2 c5 24.c4

then White's turn

13.Nxf6, 0.27. Best, Qxf6, +2.48.

Then Black's turn again,

14...Ng4, +#2. Best, Rh7, 0.27.

Mar-21-11  WhiteRook48: 15 Rd8+ of course, then 16 Qxf7#
Mar-21-11  HowDoesTheHorsieMove: Just to point out how hard I find these:

First of all, I never noticed that Qxh2 was mate. It would have made things easier.

It took me three ten minute efforts to solve this. The first ten minutes I was mostly working on the rook on h8. Never got anywhere, of course.

During the next ten minutes, after resting for a couple of hours, I concentrated on taking the pawn of f7. This seemed a bit more promising but I couldn't make it work.

I finally concentrated on d8 for the last session. After Qd8 (or Rd8, it made no difference) QxQ, RxQ, KxR, Rd1+ I couldn't see any way to continue. I finally looked at Rd8 and saw the mate.

I actually do know how the horsie moves, but not much more. I don't even try past Wednesdays.

Mar-21-11  Brandon plays: Rd8+ Qxd8 Qxf7# mate, am I right? Hmm, seems pretty clear cut and I don't see a way out for black.
Mar-21-11  sevenseaman: <HowDoesTheHorsieMove> I liked your post. This is the sort of thing that usually happens to me(not this time though).

Tell me; how much you enjoyed solving the puzzle after the dour input, so unlike <penguincw> who only took 3 secs.

I for one cannot do anything in 3 sec; may be bat my eyelid thrice.

Premium Chessgames Member
  Penguincw: < sevenseaman: <HowDoesTheHorsieMove> I liked your post. This is the sort of thing that usually happens to me(not this time though). Tell me; how much you enjoyed solving the puzzle after the dour input, so unlike <penguincw> who only took 3 secs.

I for one cannot do anything in 3 sec; may be bat my eyelid thrice. >

It was a quick guess. :(

Premium Chessgames Member
  louispaulsen88888888: It’s games like this that make me glad I go for the cop out moves 2...c6 or 2...e6. Although black’s play was very weak. 9...Bd6 or a6 and white has nothing, for example.
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