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Rubens Alberto Filguth vs Arturo de La Garza Madero
"Doctor Filguth" (game of the day Nov-12-2017)
WchT U26 (1980), Mexico City MEX, rd 1, Aug-18
English Opening: Anglo-Indian Defense. Flohr-Mikenas-Carls Variation (A18)  ·  1-0



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Kibitzer's Corner
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Premium Chessgames Member
  Check It Out: I kept looking at Qf3 but couldn't make the bishop attack on g5 work out. Just when I gave up and clicked on the game link to look I realized that if the queen dropped back to h1 the h pawn retake on g5 would be a double attack on the queen and mate on h7!
Oct-08-09  NARC: It took me ages to find the pawn grab. I was looking for something different. I also think there should be two exclamation marks for Qh1. It's so beautiful.
Oct-08-09  Nasruddin Hodja: Somebody in must have read my brainwaves. I solved this one yesterday only after bashing my head against for days, looking at lines starting with 19. Qg2, 19. Qe3, and 19. Qf3.

It was only after I looked at the line 19. Qg2 Qh5 20. Qh3 Be7, saving the queen, that my head exploded and I realized that the enemy queen could be trapped with 19. Qh1 Qh5 20 g4!, with 19. Qh1 Qf6 running into 20. Bg5! hxg5 21. hxg5, winning the queen due to the mating threat on h7.

Where was I looking at this position? In Jacob Aagard's _Excelling at Chess Calculation_, exercise 12. A must for people who are looking to improve their tactics...

Premium Chessgames Member
  Sneaky: This is the kind of move you expect to see in a composition.
Premium Chessgames Member
  Phony Benoni: Nasty!
Oct-08-09  antharis: Im too dumb today! ^^
I can only say that I think it has something to do with 19. Qf3 attacking the black queen, which must retreat to f6. But after that I cant see any forced continuation. :( Or is it the simple pawn-winning
19. Qxf5 exf5 20. Bxf5? ^^ LOOOL.

Shame on me ^^ Time to check.

Oct-08-09  TheTamale: What an awesome end. And here I was, trying to figure out how to fork the castles with the horse.
Oct-08-09  faroiden: jcb: So where is the win after 19. Qh1 Bc6? I admit, I don't see it. 20. Qh2!
Oct-08-09  zanshin: <jcb: So where is the win after 19. Qh1 Bc6? I admit, I don't see it.>

After 19.Qh1 Bc6, Rybka 3 evaluates 20.d5 at >5.0.

click for larger view

Oct-08-09  butilikefur: Hey, <19. Qf3 Qf6 20. Ng5 Qe7 21. Bxh6>

21...f5 22. Bxf5 and Black is quite lost

<21...f6 22. Bg5 fxg5 23. Qe4 g6 24. Qxg6+ Qg7 25. Qh5> threatening 26. Nf6+ for example, 26...Be7 Rxe6 or stronger is <26...Re7 27. hxg5 Be8 27. g6 Qh8 28. Qg5 Bc6 29. Nf6+ Kg7 30. Nh7 Kg8 31. Qf4> [threatening Rxp] <31...Qg7 32. Nf6+ Kh8 33. Re5>

Oct-08-09  njchess: At first, I went with 19. Qg2 thinking that Black's queen could escape to h3. Next, I looked at Black playing 19. ... Qf6 and 20. Bg5! would be a nice reply if only...

Then, it just dawned on me the diabolical nature of the exchange on g5 coupled with the bishop on the b1-h7 diagonal. That's when I found Qh1. Wow. What a move to have fall in your lap. Great puzzle!

Premium Chessgames Member
  Everett: Puzzle was spoiled for me by an old Avni book.
Oct-08-09  TheBish: Filguth vs A De la Garza, 1980

White to play (19.?) "Medium"

Wow, posting late today (worked last night very late).

Even material, it was pretty obvious there was a discovered attack on the queen via a White queen move. A little analysis pointed to the best move.

19. Qh1! This not only prevents 19...Qh3, it supports the advance of the h-pawn. Now:

A) 19...Qh5 20. g4 traps the queen (thanks to the h-pawn being supported).

B) 19...Qf6 20. Bg5! hxg5 21. hxg5 wins the queen, due to the double threat of 22. gxf6 and 22. Qh7#.

Looks like a fun game, time to check it out.

Oct-09-09  Summerfruit: Material is even.


a) 19...Qf6 20.Bg5 hxg5 21.hxg5 and wins

b) 19...Qh5 20.g4 and wins

Oct-09-09  chillowack: To the guy who asked "where's the win after 19...Bc6?", the answer is simply 20.d5. But that was a clever try, and it gains Black one more tempo of "life."

This puzzle took me quite awhile to solve. I looked at 1.Qf3, 1.Qg2, and 1.Rb4 before finally trying 1.Qh1; and after that, it took awhile longer to spot 2.Bg5.

A brilliant conception by Filguth, my hat is off to him.

Premium Chessgames Member
  perfidious: This has got to be one of the strangest, most surprising winning moves I've seen.
Nov-23-16  nonox: Dr Filguth ;)

Nice finish

Premium Chessgames Member
  FSR: Wow. But why <Doctor Filguth>?
Premium Chessgames Member It's a stretch, but we're suckers for song-puns:
Nov-12-17  offramp: <FSR: Wow. But why <Doctor Filguth>?>

Yes, I would have preferred <Filguth Factor>.

Nov-12-17  morfishine: Black should play <19...Qxd3> since after 20.Nxd3 20...Nxc4!!! and Black nets a pawn with tempo generating dangerous counterplay and the battle rages


Nov-12-17  Ironmanth: A stunner!
Nov-12-17  catlover: <morfishine: Black should play <19...Qxd3> since after 20.Nxd3 20...Nxc4!!! and Black nets a pawn with tempo generating dangerous counterplay and the battle rages>

In your line it also looks like 20...Bc2 wins back some of the lost material. Still, I'm sure it wouldn't "feel good" to play black in this position.

Premium Chessgames Member
  kevin86: Ding dong, the queen is trapped!
Nov-18-17  morfishine: <catlover> Thanks for the look, but I was being sarcastic


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