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Siegbert Tarrasch vs Allies
"Ashes Tarrasch's" (game of the day Jun-26-2009)
Naples (1914), Naples ITA
Bird Opening: Dutch Variation (A03)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Given 38 times; par: 54 [what's this?]

Annotations by Fred Reinfeld.      [2 more games annotated by F Reinfeld]

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Kibitzer's Corner
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Dec-17-05  Petrocephalon: Holy Plachutta cutting-point themes, Batman!!!

A famous, problemistic combo. The R at c8 defends c5, while the Q at d7 defends b7, but if either piece captures on c7 it is in effect forced to do both duties and becomes over-worked. A weird type of self-obstruction.

Dec-05-06
Premium Chessgames Member
  notyetagm: <Petrocephalon: Holy Plachutta cutting-point themes, Batman!!!

A famous, problemistic combo. The R at c8 defends c5, while the Q at d7 defends b7, but if either piece captures on c7 it is in effect forced to do both duties and becomes over-worked. A weird type of self-obstruction.>

Yes, Plachutta! 31 ♗c7!!.

Dec-05-06
Premium Chessgames Member
  notyetagm: In fact, this very example is discussed on the Plachutta page at Wikipedia, http://en.wikipedia.org/wiki/Plachu...:

<The Plachutta is a device found in chess problems: a white piece sacrifices itself on a square where it could be captured by one of two similarly-moving black pieces (for example, a bishop and a queen moving along a diagonal, or two rooks) moving along a different line; whichever black piece captures, it interferes with the other. Plachutta theme is named by Joseph Plachutta (*1827 1883).

...

Tarrasch v Allies, Naples 1914

Although the term Plachutta is confined to the world of chess problems, not being used in a wider chess context, the underlying Plachutta pattern does occasionally (though rarely) appear in an actual game. One example is to the right, a position which occurred in a 1914 game between Siegbert Tarrasch (with white) and an amateur (quoted in John Littlewood's How to Play the Middle Game in Chess, Batsford, 1976). In the given position, the black queen defends against Qb7 and the rook on c8 defends against Rxc5. Tarrasch played 31.Bc7!, a Plachutta interference after which black cannot maintain control over both b7 and c5 (black actually resigned after this move). If 31...Rxc7 the rook is overloaded, having to look after both the key squares: 32.Qb7+ Rxb7 and the rook is deflected from defence of c5, allowing 33.Rxc5#. If instead 31...Qxc7 it is the queen which is overloaded: 32.Rxc5+ Qxc5 deflects the queen from defence of b7, allowing 33.Qb7+ Kxa5 34.Ra1#.>

Dec-05-06
Premium Chessgames Member
  notyetagm: Position after 31 ♗e5-c7!!:


click for larger view

31 ... ♖xc7 32 ♕b7+! ♖xb7 <deflection from c5> 33 ♖xc5#

31 ... ♕xc7 32 ♖xc5+! ♕xc5 <deflection from b7> 33 ♕b7+ ♔xa5 34 ♖a1#

Gorgeous. A tremendous tactical coup by Dr. Tarrasch. Fischer said that Tarrasch's play was "razor-sharp", this Plachutta 31 ♗c7!! being a very good example.

Dec-22-06  Themofro: Beautiful last move by Tarrasch. I agree with Reinfeild on this, gorgeuos move.
Aug-14-07  Dr. Siggy: All I can say about Tarrasch's 31. Bc7!!! is three little words: - Chess is art!...
Aug-14-07
Premium Chessgames Member
  Marmot PFL: A brilliant move, whether it really happened or not.
Aug-25-07  get Reti: I think 31.Bc7 is the most amazing move I've ever seen. It is based around a different concept, not just a long combination with forks, pins, deflections, and discoveries in which every variation wins. I also like Fischer's Rf6 in his game versus Benko.
Sep-12-07  Capablanca44: Thanks to notyetagm for clearly explaining the Plachutta theme in this game, otherwise I would not have understood the 31.Bc7 move. It is a truly remarkable move.
Sep-12-07
Premium Chessgames Member
  whiteshark: <Plachutta> - Verstellung zweier zumeist gerader Figuren durch ein Opfer im Schnittpunkt ihrer Zugrichtungen.
Sep-12-07
Premium Chessgames Member
  whiteshark: Here is a description and another nice example of a Plachutta: http://en.wikipedia.org/wiki/Plachu...
Sep-12-07  twin phoenix: i must echo capablanca44 sentiment of thanking notyetagm stating that i too would not have understood B-c7 without his explanation. am familiar with alot of tarrasch's games but have never seen this gem before. tks again chessgames!!!
Sep-12-07
Premium Chessgames Member
  fm avari viraf: A very imaginative & creative move 31.Bc7 that accomplishes the "Plachutta Theme. Simply a fantastic & marvellous game by a Great Master Tarrasch!
Sep-15-07  Karpova: His opponents (the "Allies") were D. Marotti, E. Napoli, de Simone and del Giudice. http://www.chesshistory.com/winter/...
Sep-19-07
Premium Chessgames Member
  offramp: Very good! I saw this on the page that Karpova mentions, but I couldn't see the continuation - so I came here. Thanks everyone.
Nov-07-07  Chess Addict: Beautiful, indeed.
Mar-05-08
Premium Chessgames Member
  Gilmoy: Saw it after a bit. I recognized right away that it was an interference of some kind; took about a minute to calculate the rest of the pattern. If a sac only deflects a piece, with no other gain, then the deflection <is> the point. (After Rubinstein, the concept that a deflection can win should not surprise us any more.)

I did learn that there exist two distinct kinds of interference patterns involving line-movers.

- Nowotny is when they move differently, e.g. R+B. This implies that the moving piece <cuts off> the non-moving piece, which instantly gives the -1 defender.

- Plachutta is when they move similarly, e.g. R+R. This implies that there is no <cutting off>, but the moving piece does become <overworked>. Then you can deflect it further for the -1.

Hence I muttered to myself, "Oho, it's a Nowotny", having never heard of Plachutta until now. Corollary: Two Queens cannot Nowotnize, but they could Plachuttate.

In xiangqi (Chinese chess), where it is possible to block an N (corollary: an N can pin a defender), you could get the other two kinds of interferences, between N-E (elephant/minister) and N-R.

Mar-19-08  Mr. Mags: best move i have ever seen !!!!!
May-13-08
Premium Chessgames Member
  whiteshark:

Is there a second OTB game known with a <Plachutta interference> ???

Oct-26-08  sleepyirv: <whiteshark> Apparently not
Jan-21-09  hedgeh0g: Next to Marshall's Qg3!!!, Bc7!!! is probably my next favourite move of all time. They stand out as truly memorable to me which is why I denote them "!!!" :)
Mar-10-09  WhiteRook48: what's up with 31 Bc3?
Apr-25-09  WhiteRook48: 31 Bc7!!!!
May-16-09  WhiteRook48: the Allies lost World War I
Jun-26-09  LimSJ: Plachutta. i just learned that chess term and concept today (since i learned to play chess 26 years ago!). thanks, CG.com!
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