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Umut Atakisi vs Emanuel Berg
European Club Cup (2007), Kemer TUR, rd 1, Oct-03
Sicilian Defense: Najdorf Variation (B96)  ·  0-1



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Jun-06-08  KingG: 23...Nb3+! was a nice shot.

This line is quite an interesting one. White has 4 pawns and a rook against two minor pieces, but it turns out that it's not easy to find a safe place for his king, so Black should at least be able to draw.

In this game, Black had an interesting possibility of 21...b3!?(a typical move in this opening) 22.cxb3 Rc8+ 23.Kb1 Bg7! 24.Qh5 Kf8, and Black has very decent compensation for all those pawns.

click for larger view

An alternative to 18.Qxh8 is 18.Nc7+, although it is also not without it's dangers for White: REBEL vs R Har-Zvi, 2000.

Premium Chessgames Member
  al wazir: As white I would have played 33. Ree7 and hung on for a few more moves.
May-05-17  Walter Glattke: The game is clear up to 27.-Kxe8 or
the same with 25.Kc2 Rc8+ one move later with Rc8 for Ra8, but this is a won ending in very many moves, the continuations are variable here, and it is a Tartakower fail to resign to early, I agree to al wazir here.
May-05-17  ChessHigherCat: Well, there are some potential maneuvers with the N and B, and White has a pretty impressive potential attack with Rc7+ so it's best to start with a check: 23...Nb3+ 24. cxb (axb loses material big time). Now the K is as exposed as a flasher in the tropics who only had a banana leaf to begin with. It's tempting to get the B into the act right away with Bh6+ but the follow-up after Kd1 isn't so clear, so let's try the heavy guns with 24...Rc8+ and if 25. Kb1 Qe4#. That's a Thursday puzzle? White must have had a better defense. 24....Rc8+ 25. Kd1 is not so clear for black.

So back to the drawing board. 23. ...Nb3+ 24 cxb Qe3+ wins: 25. Kb1??? Qd3+ wins at least the rook on f1. If 25. Kd1??? Qd3+ with the same old manure, I mean maneuver.

May-05-17  ChessHigherCat: Just to clarify the last variation a bit, if 25. Kd1 Qd3+ 26. Ke1 Re8+ forces 27. Qxe8 Kxe8. If 26 Kc1 Rc8+ is fatal this time.
Premium Chessgames Member
  patzer2: Looking at today's Friday puzzle (23...?) with Stockfish 240813 @ 23 depth, it appears there are at least three solutions:

23...Bh6+ 24.Kd1 Kc6 25.Qe2 Ne4 26.g4 Bg7 27.Rf4 Bxb2 28.Qxe4+ Qxe4 29.Rxe4 Bxa1 30.Rxb4 Rh8 31.g5 Rxh2 32.Rg4 Kd5 33.a4 Bg7 34.g6 Rh1+ 35.Ke2 Ra1 36.a5 Ra2 37.Kd3 Ra3+ 38.Ke2 Ke6 39.Re4+ Kf6 40.Rd4 Ke5 (-2.66 @ 23 depth, Stockfish 240813 64 bit).

23...Kc6 24.Kb1 Ne4 25.Qf3 d5 26.Qd3 Bh6 27.a3 Nd2+ 28.Ka2 Nxf1 29.Rxf1 Bg7 30.Rf5 bxa3 31.b4 Be5 32.Rg5 Bf6 33.Rf5 d4+ 34.Ka1 Kc7 35.Rb5 Kd7 36.g3 (-2.30 @ 23 depth, Stockfish 240813 64 bit)

23...Nb3+ 24.Kd1 Nxa1 25.Qb5+ Kc7 26.Rf4 d5 27.Rxf8 Rxf8 28.Qc5+ Qc6 29.Qe7+ Kb6 30.Qxb4+ Ka7 31.Qxf8 Qxc2+ 32.Ke1 Qb1+ 33.Kf2 Qxb2+ 34.Kg3 Qc3+ 35.Kf2 d4 36.Qe7+ Kb6 37.h4 Qc2+ 38.Kg3 Qd3+ 39.Kf2 Qd2+ 40.Qe2 Qf4+ 41.Kg1 Qc1+ 42.Qf1 Qc3 43.Qf6+ Kb5 44.h5 Qc5 45.Qf2 Nc2 46.h6 to (-1.55 @ 23 depth, Stockfish 240813 64 bit)

White's game appears to begin to go bad with the Queen check <22. Qh5+?> allowing 22...Kd7 (-1.27 @ 21 depth, Stockfish 240813 64 bit)

Instead, the computer indicates White can hold it level with 22. Kb1 when play might continue 22...0-0-0 (22...Qe5 23. Rf1 =) 23. Qh3 = (0.00 @ 25 depth, Stockfish 240813 64 bit)

Premium Chessgames Member
  patzer2: In the final position (diagram below),

click for larger view

if 33. Rxg7 then 33...Qf4+ 34. Kg1 (34. Ke2 Qe5+ ) 34...Qd1+ picks off the Rook on g7 with a Queen fork (double attack.)

May-05-17  Lambda: Got it up to 27... Kxe8 but I was very unsure how to evaluate the resulting position. I was wondering if it's good for black because, with queen and bishop being stronger than two rooks, the fact that black has a passed pawn means all white's pawns are kind of irrelevant because any pair of connected passed pawns won't get going quickly enough.
May-05-17  Iwer Sonsch: <23...Nb3+!>

(24.Kb1 Nd2+ 25.Kc1 Nxf1)

(24.Kd1 Nxf1 and Black's defense holds)

(24.axb3 Rxa1+ Kc2 Rxf1)

<24.cxb3 Qe3+ 25.Kd1 Qd3+>

(26.Kc1 Rc8+ mating)

<26.Ke1 Re8+ 27.Qxe8+> (forced) <27...Kxe8> wins material. Also, White's pawns look vulnerable with White only having rooks.

Kinda too easy for a Friday, as a better line was not to exspect and this one doesn't appear to have any flaws.

May-05-17  goodevans: I looked at 23...Nb3 for a long time but couldn't get past the complications that would ensue after <24.Kd1>.

I see from <Patzer2>'s post that Stockfish chooses 24.Kd1 as the best defence to Nb3.

May-05-17  gofer: While Ra1 is stuck in the corner, white is effectively two pieces down, so giving up our knight is not an issue if it is a worthwhile sacrifice...

<23 ... Nb3+>

24 Kb1/Kd1 Nxa1
25 Qb5+ Kc7

24 axb3 Rxa1+
25 Kd2 Bh6+
26 Kd3 Qe3+
27 Kc4 Qd4+
28 Kb5 Rxf1

<23 cxb3 Qe3+>

24 Kb1 Qd3+
25 Kc1 Rc8+
26 Qc5 Rxc5#

24 Kc2 Rc8 25 Kd1 continues as below but one move later...

<24 Kd1 Qd4+>

Position is everything! I originally tried Qd3+, but that seems to lead nowhere whereas Qd4+ keeps the white king in a huge bind and also "connects" the queen with the DSB!

25 Kc1/Kc2 Rc8+
26 Kb1 Qd3#

<25 Ke2/Ke1 Re8+>

<26 Qxe8 Kxe8>

The queen is going to cause havoc and connecting the rooks is difficult...


Hmmm, okay, now I am intrigued which is better!?

<24 ... Qd4+>


<24 ... Qd3+>

What do our silicon friends say!?

May-05-17  Iwer Sonsch: <gofer> Qd3+ threatens the rook and mate.

But apparently, 24...Qd4+! is still stronger (-2.12 @depth 26 vs. -1.63 @depth 27 after 27...Kxe8). In both cases, White should have played 28.Rf2.

May-05-17  Iwer Sonsch: Apparently, White fares better with 24.Kd1 Nxa1 25. Qb5+! Kc7 26.Rf4!

click for larger view

26...d5 (other moves draw) 27.Rxf8 Rxf8 28.Qc5+ Qc6 29.Qe7+ Kb6 30.Qxb4+ Ka6 31.Qxf8 Qxc2+ 32.Ke1 Qc1+ 33.Kf2 Qxb2+ 34.Kf3 (-0.77 @depth 24).

May-05-17  Iwer Sonsch: Today's puzzle solution is 23...Bh6! 24.Kd1 Kc6 25.Qe2 Qg8! 26.Rf2 Re8 27.Qh5 Qh8 28.c3 bxc3 29.bxc3 Re3 30.Rf3 Re1+! 31.Kxe1 Bd2+ 32.Kxd2 Qxh5. We all, including, failed to solve this Sunday+ puzzle.
Premium Chessgames Member
  thegoodanarchist: In the game continuation, if White plays 33.Rxg7, how does Black win? I can't find it.
Premium Chessgames Member
  thegoodanarchist: And has anyone besides me wondered why so many puzzles come from games played in 2007?
May-05-17  Walter Glattke: Refined, 26.-Rxa2 27.Rc4+ / 26.-Qe5 27.Rf7+, play against the open king!
May-05-17  Walter Glattke: theg Anar: patzer 2 descrived above queen moves, those win the Rg7 with check.
May-05-17  Walter Glattke: 23.-Nb3 24.Kd1 Ra5 25.Rf7+ Kc6 26.Qf3+ Rd5+ good for black, 25.Rf7+ not strong enough.
May-05-17  Iwer Sonsch: <Walter Glattke> 23...Nb3+ 24.Kd1 Ra5 25.Qf7+ Qxf7 26.Rxf7+ Ke6 27.Rxf8 Rd5+ 28.Ke1 Nxa1 is equal.
May-05-17  Walter Glattke: Equal material, 3 pawns for a knight, but , so as 24.Kd1 Nxa1 or 24.cxb3, all a won ending after a long time, I think.
May-05-17  Iwer Sonsch: <Walter Glattke> Stockfish suggests either 29.Rf2 Ra5 30.b3 Rxa2 31.Kd1 d5 32.Rd2 (0.00 @depth 33),

29.Re8+ Kf6 30.Re2 (0.00 @depth 33)

or 29.Rc8 Ra5 30.a3 b3 31.bxc3 Nxc3 (-0.05 @depth 33).

Now how do you think Black is winning?

Premium Chessgames Member
  benveniste: I found ♗h6+. After ♔d1 I'll play ♔c6.
May-05-17  Iwer Sonsch: <benveniste> is the new champ.
May-05-17  lost in space: A hard nut:

23...Nb3 24. cxb3

24. Kd1?! Nxa1 25. Qb5+ Kc7 26. Rf4 d5 (26...Nxc2?! 27. Rc4+ Kd8 28. Qb6+ Ke7 29. Qb7+ Kf6 Qf3+ =) 27. Rxf8 Rxf8 28. Qc5+ Qc6 29. Qe7+ Kb6 30. Qxb4+ Ka7 31. Qxf8 with a white edge but a long way to win this). 26. Kd1 seems to be playable also

(not 24...Rc8+ 25. Kd1 and no progress for Black and also not 24...Bh6+ 25. Kd1 and no progress)

25. Kc2
(not 25. Kb1 --> mate in 3 after 25...Qd3+ 26. Kc1 Rc8+ 27. Qc5 Rxc5#; 25. Kd1 Qd4+ leads to there same position as the my mainline with 25. Kc2)

25... Rc8+ 26. Kd1 Qd3+ 27. Ke1 Re8+ 28. Qxe8+
(not 28. Kf2 Qe3#)

28...Kxe8 29. Rf3

click for larger view

Is this won for Black? I don’t think so. Better for Black yes, but won?! From a material point of view White has 15 points, Black 14 points, Black has more active pieces with is overcompensating his material minus....I would not give up here as Black, so even though I though long about the puzzle I don’t think I found the solution.


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