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Sonja Graf-Stevenson vs Semmler
Mnichov (1932)
Queen's Gambit Declined: General (D30)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jan-09-12  woody b: like so many others i immediately saw Qxf7+ and dismissed it. i simply didn't see that the Rook g6 is protected by h5! my "solution" was
31. Rg8+ Kxf8
32. Nf6+ Kf8 ?
33. Ne7+ Ke7 ??
34. Qf6# knowing this was too complicated for a monday...
Jan-09-12
Premium Chessgames Member
  kevin86: A little harder than usual,but the fact that it is a Monday puzzle screamed for a queen sac. The fortified rook guards both the sixth rank and the g file- and the knight guards e7 AND blocks the queen's defense of the rook so the queen sac leads to a three move mate.
Jan-09-12
Premium Chessgames Member
  gawain: Looks like a Monday. The White Queen must die!

31 Qxf7+ Kxf7 32 Rf1+ and mate follows

Jan-09-12
Premium Chessgames Member
  YouRang: Geez, I spent the longest time on this.

I even looked at 31.Qxf7+, but couldn't make it work because some weird blindness prevented me from noticing that my rook on g6 is guarded by the pawn. :-(

Jan-09-12
Premium Chessgames Member
  SuperPatzer77: <YouRang> <Geez, I spent the longest time on this.

I even looked at 31.Qxf7+, but couldn't make it work because some weird blindness prevented me from noticing that my rook on g6 is guarded by the pawn. :-(>

<YouRang> You're not alone. I didn't see it, either. Uuugh!!

SuperPatzer77

Jan-09-12  Dr. J: <sevenseaman: Is Q the most sacced piece in chess, maybe next to a P?>

Only on Mondays.

Jan-09-12  Dr. J: If <30 Rxg6+ <fxg6>> I see 31 Qxg6+ Kh8 (best) 32 Qxh6+ Kg8 33 Nf6+ Kf7 34 Qg6+ Ke7 (best) 35 Rd7+ Ke6 36 Qf7+ Kf5 37 Nh7+ Kg4 (best) 38 Qf3+ Kh4 39 Qh3#

Does anyone see a faster mate?

And I agree: with an unusual pattern mate-in-4, I would rate this as a Tuesday puzzle.

Jan-09-12  Pawn Derous: Qf7+ is further extrapolation necessary?
Jan-09-12  cjgone: Completely missed this one...
Jan-09-12
Premium Chessgames Member
  Penguincw: Interesting mid board mate.
Jan-09-12  ajile: See a queen sac, take a queen sac.

That's my motto.

Jan-09-12  ruzon: Earlier today I had a pleasure of losing a simul to IM Marc Arnold. I lost a little less spectacularly than poor Semmler did, but at least he generated some counterplay.
Jan-09-12  polarx: Hey, ruzon, since you have mentioned it, you could have posted the game.
Jan-09-12
Premium Chessgames Member
  David2009: I failed to solve last Monday's problem - for some reason I found today's pattern easier to recognise. Rewind to move 27:


click for larger view

(Graf-Stevenson vs Semmler 1932 27?) Against the game line 27 h4 Kg7 28 Rg4, Crafty End Game Trainer finds 28...Kh8! and I can't find a way through for White. Link: http://www.chessvideos.tv/endgame-t...

Jan-09-12  Clinton Tan Jr: Happy New Year to all of you!!!
It has been nearly three(3) decades that again I visited the alluring world of chess!!! I was deeply saddend for the demise of one of my best friend Andrew Vasquez. I didn't know until now. Andy as most of our friend call him was a man of principle , undeminished character and had a good sense of humor! Andy we will forever miss you pare! Andy, Gerry cabellon, Rene Cadiz, Paragas, Rolly Yutuc, ED Alix, Hombrebueno, Bernardo and myself and our coach Bernardito Rementilla( a chess player by his own right)were member of the TIP CHESS TEAM way back in our PICUAA days(3 Championship and 2 second place finish-never been equalled I presume)The bonding that we have cultivated and enriched during those days were unparalleled. Memories like these will be forever remembered! to my friends, chito & ed garma, rogelio antonio, abalos, ed gatus, young, fernie dongines, villamayor, dick gicain to name a few... I am very happy that you are still active in playing chess!! God Bless you all my colleagues!!! See you soon on the chess board!!
Jan-09-12  Ezzy: < YouRang: Geez, I spent the longest time on this. I even looked at 31.Qxf7+, but couldn't make it work because some weird blindness prevented me from noticing that my rook on g6 is guarded by the pawn. :-(>

<SuperPatzer77:<YouRang> You're not alone. I didn't see it, either. Uuugh!!>

I also had a blind spot on this for a while. I was trying to make 31 Rg8+ work with 32 Nf6+ and a possible 33 Nd7+ forking king and queen. After more time than usual for a monday puzzle, it finally clicked. Originally I had visions of the d1 rook coming into the game down the 'd' file, and Rf1 was off my radar for a while.

When I realised the solution, I just laughed at the simplicity of it, but also how sometimes you get a 'blind spot' which makes things more difficult.

Jan-09-12
Premium Chessgames Member
  WannaBe: Caissar Award's voting for <Best Avatar> and <Best Written Post> will end 11:59 PM Eastern Time. About 3 hours and 10 m.

Details are in my profile, and votes can <only> be posted in my forum to count.

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Jan-09-12  stst: Monday==> Q-sac will do it, again!?
check:
31.Qxf7+ KxQ (forced)
32.Rf6+ Kg7
33.Rg6+ Kh7
34.Nf6+ Kh8
35.Rxh6#
and the R at rank 1 remains only as a silent threat.
Jan-09-12  tivrfoa: Very nice link <David2009>. Please someone, is there a way for white? :(
Jan-09-12  VincentL: "Very Easy".

I did not see this quickly for some reason, and even ended up trying Rg8+ followed by Nf6+

Of course the solution is 31. Qxf7+ Kxf7 (only move) 32. Rf1+ Rf5 33. Rxf5#.

Letīs check the kibitzing.

Jan-09-12  VincentL: Interesting that others report similar experiences.

Of course Qxf7+ was the first thing I looked at, but I rejected it for some reason and started analyzing 31. Rg8+ Kxg8 32. Nf6+. This looked too involved for a Monday, so I decided it must be Qxf7+, and then I saw it.

Jan-09-12  Nullifidian: Queen sac Monday again:

31. ♕xf7+ ♔xf7 32. ♖f1+ ♖f5 33. ♖f5#

Jan-09-12
Premium Chessgames Member
  pittpanther: I usually solve Monday puzzles in about 15 seconds but this one took me much longer, I eventually found it but probably only because I knew there was a win. I see others found this a bit harder than a usual Monday too.
Jan-10-12
Premium Chessgames Member
  TheBish: Graf-Stevenson vs Semmler, 1932

White to play (31.?) "Very Easy"

31. Qxf7+! Kxf7 32. Rf1+ Rf5 33. Rxf5#.

Queen sac comes early this week!

Jan-10-12  ruzon: <polarx>: Do you like to watch slow motion car wrecks too?

I'll post my game, though I offered little resistance to his pawn storm. The checkmate is pretty.

Marc Arnold Simul Game 4/9
IM Marc Arnold (2522) - Mark Ruzon (1629P6)

1. c4 Nf6 2. Nc3 e6 3. d5 Bb4 4. e3 c5 5. Be3 O-O 6. Ne2 d5 7. cxd5 Nxd5 8. O-O Nc6 9. a3 Bxc3 10. bxc3 Qd6 11. e4 Ne7 12. Be3 cxd4 13. cxd4 b6 14. Qc2 Ng2 15. f4 f6 16. e5 Qd7 17. f5 exf5 18. Bxf5 Qe8 19. Be4 Bb7 20. e6 Rc8 21. Qa2 Kh8 22. d5 Ne5 23. Ng3 Nc4 24. Bd4 Nd6 25. Nf3 Rc4?? 26. Nf5 Rxd4 27. Nxd4 Qa8 28. Nc6 Re8 29. Rac1 Ne7 30. Nxe7 Rxe7 31. Rc3 g6 32. Rfc1 Qb8 33. Qb2 Kg8 34. Rc7 Kf8 35. Rxe7 Kxe7 36. Qc7+ Qxc7 37. Rxc7+ Ke8 38. Rd7 Bxd5 39. Bxd5 Nc8 40. Rb7 Nd6 41. Rxa7 h6 42. e7 g5 43. Bc6+ Kf7 44. e8=Q# 1-0.

15...f5 is the first major improvement.

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