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Milan Vidmar vs David Przepiorka
15th DSB Kongress (Nuremberg) (1906), Nuremberg GER, rd 12, Aug-05
Queen's Gambit Declined: Orthodox Defense. Main Line (D63)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Jun-23-21  Tiggler: I think 36 Rxf6 works just as well.
Jun-23-21
Premium Chessgames Member
  saffuna: <I think 36 Rxf6 works just as well.>

Except it's not check and the black c-pawn can queen with check.

Jun-23-21  Cheapo by the Dozen: There's a simple mating sequence that works. The key to finding it for me was realizing:

-- The c2 pawn means that White can't let Black have a tempo, and should play utterly forcing moves instead.

-- Thus, White needs to be able to actually mate at f7.

-- To do that, he needs to have 3 pieces pointing at f7 (counting the pawn), not just 2.

Jun-23-21  Walter Glattke: 36. Rg6 (Rh4) xh6+ gxh6 37.Rxh6+ Kg7 38.Qh7 Kf8 39.Rxf6+ R/Qf7 40.Rxf7+ R/Qxf7 41. Qxf7#/35.-Rxe6 36.Qg4 Kh7
Jun-23-21
Premium Chessgames Member
  agb2002: White has an extra pawn.

Black threatens c1=Q+ and Rxe6.

White can force mate with 36.Rg(h)xh6+ gxh6 37.Rh(g)xh6+ Kg7 38.Qh7+ Kf8 39.Rxf6+ Qf7 (39... Rf7 40.Rxf7+ Qxf7 41.Qxf7#) 40.Rxf7+ Rxf7 (40... Ke8 41.Qxg8#) 41.Qxf7#.

Jun-23-21  TheBish: White to play (36.?) "Medium/Easy"

White is up a pawn. Black is threatening to queen with check, but being a puzzle, of course, White needn't settle for 36. Qxc2 Rxe6. Most forcing move is a rook sac with check, to tear open the king's fortress. After a little analysis, one can see that it's a forced mate in 6.

36. R(any)xh6+ gxh6 37. Rxh6+ Kg7 (no need to discuss 37...Rh7) 38. Qh7+ Kf8 39. Rxf6+ Rf7 40. Rxf7+ Qxf7 41. Qxf7#.

On second glance, it's also a mate in 6 if Black plays 39...Qf7 40. Rxf7+ Ke8 41. Qxg8#.

Not too tough for a humpday puzzle!

Jun-23-21  Brenin: Black threw away a win with the incomprehensible 35 ... c2, which allows White to play simply 36 Qxc2 if he misses the rather obvious mate in 6. Instead, 35 ... Rxe6 retains the threatening c-pawn, regains a P, and threatens another P on e3. Time-trouble panic?
Jun-23-21
Premium Chessgames Member
  drollere: i had 36. Rgxh6+ gxh6, 37. Rxh6+ Kg7, 38. Qh7+ Kf8, 39. Rxf6+ Rf7, 40. Rxf7+ Qxf7, 41. Qxf7# ... but then, so did everyone else.
Jun-23-21  TheaN: <36.Rxh6+ gxh6 37.Rxh6+ Kg7 38.Qh7+ Kf8 39.Rxf6+ R/Qf7 40.Rxf7+ Q/Rxf7 41.Qxf7#>

The puzzle itself is not that interesting; how to note it more so. I'm not sure if what I've written is allowed.

First off, Rxh6+ is technically not an available move, as it's ambiguous. However, because the followup is forcefully the same, noting which rook takes on h6 has no point. By ruling however, we have to, given we can make another move on move 37 and the position is crucially different depending on which rook took on h6.

The second choice I make is to distinguish Black's capture on f7 with a /, followed by the other piece respectively on the next move; also because taking twice is forced. Here, I'm pretty sure we're supposed to denote two different variations.

Everyone understands what I've posted, but technically it probably should be 36.Rhxh6+ (Rgxh6+ gxh6 37.Rxh6+) gxh6 37.Rxh6+ Kg7 38.Qh7+ Kf8 39.Rxf6+ Rf7 (Qf7 40.Rxf7+ Rxf7 41.Qxf7#) 40.Rxf7+ Qxf7 41.Qxf7#.

Jun-23-21  Whitehat1963: 38. Qh7+ is the key move in the sequence.
Jun-23-21
Premium Chessgames Member
  chrisowen: Davey Jones keyins divey Rhxh6 garcon a fridge puffy keyins bedbugs exorbitant keyins aghast keyins o quosh davey jones keyins lapel mooted its okay keyins binary plummet crick kissy quagmire weigh o keyins jaffa its exodus davey o keyins journey divey its pallbearer hick crows keyins myth its footed it z keyins heffa its Rxe6 ebbers keyins effects fluff keyins a bluff frazzled its ok achtung ratchet c2 either feels keyins o about i gloat fluff davey keyins totups diminish foggy do its ace me a keyins flubb dangle its whip z its auld mrs its dryland keyins rome its ivory Rhxh6 fiddle!
Jun-23-21
Premium Chessgames Member
  Once: I thought this one looked familiar.
Jun-23-21
Premium Chessgames Member
  chrisowen: No spark in the chamber no?
Jun-23-21  WorstPlayerEver: Mate in 6. More a regular review than a puzzle.
Jun-23-21
Premium Chessgames Member
  Oxspawn: I think this was the first position of the day I commented on in 2012. I didn't get it then and I didn't get it again today for the same reason. On move 38 I insisted on Rh7+ and simply could not 'see' Qh7+. Full marks for consistency.
Jun-23-21
Premium Chessgames Member
  chrisowen: No span is h6 flare no?
Jun-23-21  Andrew Chapman: <I think this was the first position of the day I commented on in 2012. I didn't get it then and I didn't get it again today for the same reason. On move 38 I insisted on Rh7+ and simply could not 'see' Qh7+. Full marks for consistency.>

Oxspawn's 2012 confession is enjoyable (page 2).

Jun-23-21
Premium Chessgames Member
  drollere: <I'm not sure if what I've written is allowed.>

well, if you just play out the sequence of moves you propose on the web page game board, and then just copy and paste whatever "ANALYSIS" record is made of your moves, then there cannot be and will never be any misunderstanding.

Jun-23-21
Premium Chessgames Member
  Dionysius1: Heh Mr Owen - you're beginning to repeat yourself!
Jun-23-21  woodenplayer: As others pointed out years earlier, 35. ... Rxe6 wins for Black. However, instead of 35. Qxe4 White should have played 35. Qh5 after which the only way for Black to prevent immediate mate is 35. ... Qxg6 36. Qxg6 Rge8 and after 37. Qxe4 Rxe6 38. Qc2 Rxe3 it appears that White should still win.
Jun-23-21  Refused: Two solutions are possible.

The game continuation with 36.Rhxh6+ and 36.Rgxh6+ which was my pick.

No matter which rook one picks, the lines merge again

after 36...gxh6 37.Rh6+ Kg7 38.Qh7+ Kf8 39.Rxf6+ etc.

Jun-23-21  jes47: The commentary gives 35 ... Re6 as best for black, but much better is 35 ... f5. The recommended line continues 36. Qf5 Rc6 37 Qd3 Rb6, which is a very strange move. In this line 37 ... c2 is crushing. They can't be using a current version of stockfish, or they have it set to a low level.
Jun-23-21
Premium Chessgames Member
  raymondhow: First move looked pretty obvious, with either Rook. Took me a little time to see through to 39 Rxf6+.
Jun-24-21
Premium Chessgames Member
  devere: Vidmar was Botvinnik's idol...as a fellow electrical engineer. And he was a pretty good chess player too.
Jun-24-21  TheBish: Interestingly, nobody ever commented on White's 27. Rg6!?, passing on the winning 27. Rxg7+!, which wins a queen and pawn for rook and bishop after 27...Qxg7 (27...Rxg7 28. Nxf6+ Kh8 29. Nxd7 Rxd7 30. Qxh6+ gives up two more pawns) 28. Nxg7 Rxg7 29. Rf4 Rag8 30. g3. Eventually, White's queen will infiltrate the queenside and pick off more pawns.
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