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Krishnan Sasikiran vs Denis Rombaldoni
Trophee Universitaire (2006), La Roche-sur-Yon FRA, rd 1, Mar-15
Nimzo-Indian Defense: Classical. Noa Variation (E36)  ·  1-0



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Kibitzer's Corner
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Jun-16-08  TiTi: ... to further on my point,
* 28. Ra8 Rxa8 29. Qxe4 Re8 30. Qxe8 Qf8 31. Qxf8 Kxf8 leaving the Knight * 28. Ra8 Rxa8 29. Qxe4 Qf8 30. Qh7#
Jun-16-08  zb2cr: Hi <TiTi>,

Your alternate, 29. Ra8, doesn't work. Black can remove his Rook from e4 with check, 29. ... Re1+; 30. Ka2, Qxg5 and Black wins.

Jun-16-08  whiteshark: I guess black was flabbergasted after 28.♕xe4.
Jun-16-08  234: Sunday puzzle <23. ...?> Jun-15-08 A Hennings vs I Radulov, 1972
Jun-16-08  Longbrow: What was the point of 22...b5? Seemed a premature advance, and eventually opened the way for 24. R1d4!
Jun-16-08  johnlspouge: Monday (Very Easy): White to play and win.

Material: N+2Ps for R. The Black Kg8 has two flight squares, f8 and h8, because the White Ng5 controls f7 and h7. The White Ra7 therefore has mate threats if Black loses control of the back rank. Presently, the Black Re8 controls the back rank, but it also must protect its fellow Re4 from attack by the White Qc2. The consequences of checks, captures, and threats contain a clearly winning line.

Candidates (28.): Qxe4

28.Qxe4 Rxe4 [or Black throws a R]

29.Ra8+ Qf8

[29…Re8 30.Rxe8+ throws a R]

30.Qf8 Rxf8+ 31.Kxf8 Nxe4

and White has won a R, leaving Black has nothing to play for. This is definitely Tuesday material on Monday!

Jun-16-08  TiTi: Aha thanks <zb2cr> :)
Premium Chessgames Member
  Benzol: I find it remarkable that a 2200+ rated player could miss the 28.♕xe4 reply unless he was in time trouble.
Jun-16-08  Woody Wood Pusher: i was searching for a mate but the material win after Qxe4 is good enough
Premium Chessgames Member
  kevin86: Here is a Monday puzzle with a few nuances in it. It is a queen sac that leads not to mate,but the gaining of a piece. Like I say,white loaned his queen at shark rates-picking up a piece as interest.

28...♕xa7 29 ♕xe8# or 28...♖xe4 29 ♖e8+ ♕f8 30 ♖xf8+ ♔xf8 31 ♘xe4 White is up a piece and two pawns and even a sixth grader should win easily.

Premium Chessgames Member
  patzer2: For today's "easy Monday" puzzle solution, White takes advantage of the weakened back rank situation with the winning 28. Qxe4!

White's attacking positional exchange sacrifice with 25. Rxe4! seems to set up this winning combination, creating what appears to me to be near decisive threats after 25...Rfxe4 26. Nxg5 .

P.S. I'm without a strong chess program to check it, so would be interested if anyone can confirm if there is a defense for Black after 25. Rxe4!

Premium Chessgames Member
  gawain: I liked this position but I think "very easy" is right. The winning move Qxe4 leading to back rank monkey-business emerges as soon as you see what the g5 knight is doing--namely, covering the 7th rank escape squares.
Premium Chessgames Member
  Once: <patzer2> Fritz 11 gives this line after 25. Rxe4 Rfe4 26. Nxg5 Qe5 27. Nxe4 Qxe4 28. Qxe4 Rxe4 29. Rxe7 with an advantage to white of +1.98. Black may hope to draw - "all rook endings are drawn"? - but white should bring home the point.

Not as decisive as the game line, though.

As to the puzzle itself, it's mostly all been said. The knight on g5 effectively makes a back rank mate possible.

Premium Chessgames Member
  pittpanther: What is the winning sequence if black plays 26...Rh4 instead of Qc8? White then plays 27. Qg6 and black's only response is 27. Qe5. Then white can play 28. Ne6! If black takes with the Queen he is mated on g7 or if he takes with the rook he loses his rook and queen to Rd8. Since the rook on e8 is hanging he must play it to c8, b8 or a8. Then white plays Rxg7 but i do not see the clear win from there.
Premium Chessgames Member
  Once: <pittpanther> Fritz 11: 26. ... Rh4 27. Qc3 Rh7 28. Qf3 Re5 (28. ... Rf8 29. Qd5+) 29. Qf7+ Kh8 30. Qg6 Rxg5 31. Qxg5 Qg8 32. Rd8 with an advantage of +9.89.
Jun-16-08  YouRang: The traditional Monday queen-sac, but still a good puzzle (if one doesn't get it just by ASSUMING it will be a queen sac).

Notice the back-rank mate threat created by the knight, and exploit the illusionary defense provided by the back-rank defender.

Jun-16-08  SuperPatzer77: If Black avoids the Qxe8+ threat by 28...Rd8, then White takes aim at h7 with 29. Qh7+ to force checkmate with 30. Qh8#.

28...Qxa7, 29. Qxe8#.

28...Qxg5, 29. Qxe8+ leaving White a rook up.

28...Rxe4, 29. Ra8+ Qf8, 30. Rxf8+ Kxf8, 31. Nxe4 leaving White a knight and two pawns up.


Jun-16-08  gambitfan: General Rule for the Monday Puzzle :

1. Sacrifice your Queen

2. See what happens !!


Jun-16-08  TrueBlue: gambitfan, I would love to play a chess game with you if you follow this rule :) We can even put a small wager :))))
Jun-16-08  hedgeh0g: <I guess black was flabbergasted after 28.Qxe4.>

Yeah, he must have been like omgwtf???

Jun-16-08  Prugno: <hedgehog> Somehow I doubt it, Denis (who by the way was only 17 years old at the time of the game) is usually very composed at the board and knows better than to get upset when an elite player finds a spectacular combination in an already winning position.
Jun-16-08  DarthStapler: Didn't get it strange
Jun-16-08  johnlspouge: <<SuperPatzer77> wrote: If Black avoids the Qxe8+ threat...>

Hi, Cubby. Your analysis is quite right: my first line should have read

28.Qxe4 Rxe4 (threatening 29.Qxe8# and 29.Qh7+ 30.Qh8#)

rather than some anemic trash about "throws a R".

Still human, after all these years (sigh) :>}

Jun-16-08  lopium: It was a hard and very nice one for a Monday! I can't even imagine when Sunday will hopefully come. Worth to say I didn't get it.
Jun-16-08  tatarch: 25.Rxe4 is a nifty move-- would have made a nice puzzle later in the week.
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