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Arkadij Naiditsch vs Matthias Schurade
75th German Championship (2004), Hoeckendorf GER, rd 4, Feb-02
Sicilian Defense: Najdorf Variation. Main Line (B99)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Mar-04-15  TheaN: Wednesday 4 March 2015 <26.?>

White is down two pawns. As compensation he has the fortified d-file and a potential outpost on e6. These exact two factors decide the combination of today.

White breaks up the d-file and takes the outpost on e6: <26.Rxd7 Rxd7 27.Be6 Rd8> bringing in the other rook is the only defense of d7 possible <28.Rxd7 Rxd7 29.Qe8+ Qd8> puts the black queen in a pin also, so effectively d7 is only defended by the king <30.Bxd7+ Kd7 31.Qxd8+ Kxd8 32.Be6 > and the bishop vs two pawns endgame is trivial.

Note that on move 26 through 28 black can decide to not recapture or defend d7 and drop the bishop. This engages white in the queen endgame with a piece up, which can be tedious to win.

Mar-04-15  TheaN: Black played through the entire line, though after 26.Rxd7! it should be obvious white has seeen this as well. I still would have tried something more practical to make the endgame tedious for white: with queens on the board, endgames are hard.
Mar-04-15  CHESSTTCAMPS: White is down 2 pawns, but has all pieces on good squares and controlling key lines, especially the open d-file. White can win black's passive bishop with 26.Rxd7 Rxd7 27.Be6 and now

A) 27... Rd8 28.Rxd7 Rxd7 29.Qe8+ Qd8 (Kb7 30.Qxd7+ Kb7 31.Qc8+ Ka7 32.Bd5) 30.Bxd7+ Kc7 31.Qxd8+ is an easily won ending.

B) 27... other 28.Rxd7 leaves white up a piece and controlling the 7th rank.

Mar-04-15  morfishine: Looks like no matter what Black plays, White ends up a piece ahead after <26.Rxd7>


Mar-04-15  zb2cr: Found this one quickly.
Mar-04-15  lost in space: Found the plan with Rxd7, Be6 and Qe8+.

I guess the prosaic 26. Rd6 wins too

Premium Chessgames Member
  Penguincw: Looks like an easy Wednesday puzzle. I would've gotten it OTB, as I got 26.Rxd7 Rxd7 27.Be6 (wasn't sure what black would play next).
Mar-04-15  diagonalley: <lost in space> ... hmmmmmm i actually went for 26.R-Q6, though admittedly it is inferior to the game line
Mar-04-15  TheTamale: The first move was obvious, but the follow up was very charming and instructive.
Premium Chessgames Member
  patzer2: Turns out there is a big late game improvements for Black here.

Instead of trying so hard to protect the isolated pawn with <24...Qg6?>, Black should have consolidated and fortified the position with 24...Qe7! to .

With the 24...Qe7! improvement, play might go 24... Qe7! 25. Bc4 (25. Bxa6+ Kc7 26. Bc4 Rge8 ) 25... Rge8! to (diagram below)

click for larger view

Here (after 24... Qe7 25. Bc4 Re8 to ) the tables have turned, as Black is a solid pawn up and it is now White who is now fighting to hold the draw.

Now 26. Rxd7?? is bad, as Black wins with 26...Rxd7 when play might continue 27. Be6 Red8 28. Rxd7 Rxd7 29. Qd1?? (diagram below)

click for larger view

29...Qxe6! .

Premium Chessgames Member
  kevin86: The vpin series gains white a bishop.
Mar-04-15  Castleinthesky: Shoveled the snow and solved the puzzle, I guess I'm "over the hump."
Mar-04-15  SimplicityRichard: <patzer2> Brilliant analysis and use of diagrams. I followed through with assistance from Stockfish, and it appears, 24...Qe7! was decisive with correct play.
Premium Chessgames Member
  patzer2: <SimplicityRichard> Thanks! Glad you found a win with 24...Qe7! using Stockfish. Fritz 12 indicated it was winning, but I wasn't sure.
Mar-04-15  sfm: <Funology: Judging from my Stockfish this was essentially a trick, as Black should be better after 24. ...Qe7> Chess, like life itself, is 50% trickery, 50% the result of trying to to the clever thing.
Mar-04-15  sfm: 24.-,Qe7! is one of these moves that does not come intuitively.

The queen seems a bit passive there, and White can grab the a-pawn with check, and can play Qf3 with invasion hopes.

Tips for chessplayers:
1. If in doubt about your calcutions, trust your intuition to give you the right move. 2. In the cases, where (1) would fail, be certain about your calculations.

Premium Chessgames Member
  devere: <patzer2: Turns out there is a big late game improvements for Black here.>

Yes 24...Qe7! was certainly the correct move. It is remarkable how safe Black's wide-open-looking King would have been. After 25. Bxa6+ Kc7 or 25. Qf3 Kc7 or 25.Bc4 Rge8 26. Rd6 Ba4 Black has the advantage.

Mar-04-15  rollingrook5: "clog ever be cog safe gulch egg combo he crang a d2 rook gel catch sac general sic sance go sal salubrious ave cog effect peg clue four captures ski palm cone a d2 sac..."

What the Christ is this, James Joyce's analysis?

Mar-04-15  Bubo bubo: White wins the bishop with 26.Rxd7! Black may recapture with 26...Rxd7, but 27.Be6 pins the rook, and protecting it with 27...Rd8 does not help, as 28.Rxd7 Rxd7 29.Qe8+ will win a rook after all, for a net gain of a bishop.
Mar-04-15  Dr. J: Two questions about the play before the POTD position:

1) As noted above, Black could have held the advantage with 24...Qe7. So should White have played 23 Bxa6+ Kb8 24 d6 Qb6 25 Bc4 (which looks very strong to me)?

2) After the game continuation 23 d6 Qxd6 24 Rhd1 Qb6 25 Bc4, wouldn't Black have done better with 25...Rgf8 keeping the White Queen out of f7? Does Black get an advantage, or at least survival, out of that?

In other words, did White simply bungle his move order? (After all, he's only got a rating of 2711, so how could he possibly have seen something I'm overlooking?)

Mar-04-15  M.Hassan: "Medium/Easy"
White to play 26.?
White is two pawns down

26.Rxd7 Rxd7
<if...Kb8 28.Rxd7 and White falls ahead by a Bishop for two pawns>

28.Rxd7 Rxd7
29.Qe8+ Qd8
30.Bxd7+ Kc7
31.Qxd8+ Kxd8
White is up by a piece for two pawns.

Mar-05-15  lost in space: <<diagonalley:> <lost in space> ... hmmmmmm i actually went for 26.R-Q6, though admittedly it is inferior to the game line>

Yes, definitely. And it is not even a good move. After the simple 26...Bc6 as answer Black is more than fine.

Mar-05-15  SimplicityRichard: <sfm> <Tips for Chessplayers:> I concur; and in fact to my knowledge, your tips can be applied to life experiences.

And yes; 24...Qe7, is counter-intuitive, as the Queen seems passive there. I suppose the advent of the utilisation of Software will open up a different way of evaluating positions and perhaps influence general play.

Mar-05-15  SimplicityRichard: <Dr. J> <Should White have played 23.Bxa6+ Kb8, 24.d6 Qb6, 25.Bc4, which looks Strong..>

I have looked at your line using Stockfish, and here is what I got.

If we follow the line above, it appears that it may not be as Strong as it appears. Pursuing your line the position is drawish. Here is a diagram.

click for larger view


Stockfish following your move 23.Bxa6+, actually continues, ...Kh8, 24.Bc4 Qd6, 25.Rf1, but even this line leads to a drawish outcome.

In answer to your second question <Wouldn't Black have done better with 25...Rge8, after 23.d6 Qxd6, 24.Rhd1 Qb6, 25.Bc4.>

Stockfish 'says' "not really" as that position is evaluated as an outright win for White, (2.84).

Any additional comments welcome.

Mar-05-15  Dr. J: Answer to my own questions:

1) 23 Bxa6+ Kb8 24 d6 won't do: 24...Qa5 25 Bc4 b3, and now 26 Rd3 saves both rooks, but the counterattack is too strong (found by Crafty EGT).

2) 25...Rgf8 does not improve on the game continuation, because it IS the game continuation.

3,4: No. (And, yes.)

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