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Teimour Radjabov vs Vasyl Ivanchuk
World Championship Candidates (2013), London ENG, rd 2, Mar-16
Dutch Defense: Leningrad. Warsaw Variation (A88)  ·  1-0



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Given 14 times; par: 62 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 9 OF 9 ·  Later Kibitzing>
Mar-23-14  diagonalley: presumably a machine would pick 33.... P-N5 too? ...and with the winning continuation
Premium Chessgames Member <[I] didn't work out the continuation (and <CG> didn't either).> Quite right; the assertion that 33...g4!! draws is based on computer analysis and "good authority" — not any analysis we've done ourselves.

As kibitzers analyze this very subtle position today we hope to supply more moves of the critical variation.

Mar-23-14  paramount: The puzzle is good. I failed this day, i think about Bxb6. I was lazy to think deep though. But, is it really g4 is a winning line, i doubt it, its enough to press the white king but i doubt its a win. But maybe im wrong.
Mar-23-14  morfishine: I thought 33...h3+ was worth a look. The position is visually deceptive: with Black's DSB under attack by the Knight, the best move <33...g4> is difficult to find

Good puzzle


Mar-23-14  Dilbertarian: Best line according to Crafty is:

33. ... g4 34. f4 (fxg4, Rxg4!) h3+ 35. Kh2 Rd8 36. Rxc6 Rxd3 37. Rxc5 Nxc5 38. Qxc5 Rd2+ 39. Kg1 Rg2+ 40. Kf1 Rxg3.

Premium Chessgames Member
  Penguincw: How did I not saw the rook hanging? Just in general, it's not a bad move to win the exchange, and I just missed it. :| I was thinking of 33...Nf4+ 34.gxf4 gxf4+ 34.Kf1 Rg1+ 35.Ke2, but not much else can be accomplished from here on out.
Mar-23-14  chessiya: What if white still continues like this and finds a draw after perpetuals ?? 35. Kxg3 Nf4 36. Nxf4 gxf4+ 37. Kf2 Ra8 38. Qb3 Rga7 39. c5+ Kf8 40. Ke2 Rxa2+ 41. Kd3 Rf2 42. Qb7 Rxf3+ 43. Kd4 Ra3 44. Qc8+ Ke7 45. Qc7+ Kf8 46. Qd8+ Kf7 47. Qd7+ Kf8 48. Qd8+ Kf7 49. Qd7+ Kf8 50. Qd8+ Kf7 1/2-1/2
Mar-23-14  BOSTER: I'd play 33...g4 34.f4 h3+ 35.Kh1
and now the main idea that knight
on d3 in the open file without protevtion
So, Rd7
If 36.Nxc5 Rd1+ 37.Kh2 Nxf4 and so on.
Premium Chessgames Member
  Jimfromprovidence: After 33...g4!!, if white follows with 34 Rxc6??, black's wins with 34...gxf3+.

click for larger view

White must follow 33...g4 with either 34 f4 or 34 fxg4.

<BOSTER> <I'd play 33...g4 34.f4 h3+ 35.Kh1 and now the main idea that knight
on d3 in the open file without protevtion
So, Rd7
If 36.Nxc5 Rd1+ 37.Kh2 Nxf4 and so on.>

<BOSTER> your line is good up to 35…Rd7, below.

click for larger view

The knight cannot move however, because of the threat …Rd1+. White has to play 36 Rxc6 here.

If 36.Nxc5 Rd1+ 37.Kh2 Ng5!! wins.

click for larger view

Mar-23-14  sfm: <OhioChessFan>, <PB: After all, had it been been checkmate the move would have counted even if the clock was not stopped in time.>

Does this mean that we can wait as long as you want (after the time control) with a mating move? I.e., that a player can run out of time, then 1 minute later finds that he has a mate in one, and plays it, and wins?

I.e. "just having a mate in one always wins, regardless of the clock".

Are the current rules like that?

Or it is rather so, that the player can be declared the loser on time forfeit, despite having a mating move that he clearly didn't make before the opponent claimed the win on time?

If so we have allowed for heated discussions on what came first: the time claim or an execution of a mating move, with the difference of a full point for either player. The winner: the one who shouts highest and is most unwilling to bow.

This is most unfortunate. Why allow that when there is a simple solution:

Make all moves, including a mating move within time, or you have lost.

This is well-defined, as the clock clearly shows if this happened. No discussion possible.

In that situation I suppose it does not make much sense to allow the last move to be registered as played, because it would make a difference if it was played just as the time run out or 'too long after'.

Mar-23-14  Rookiepawn: Just a doubt, not about the game itself but the way it is organized.

I always felt the purpose of organizing chess competences is to let the players play, concentrate on moves and nothing else. Writing moves and stopping clocks have nothing to do with the game itself.

The fact that a game result might depend on how fast your arm moves through the play strikes me as ludicrous. Today we have enough technology to create a board that both records moves and checks the time flag.

This wouldn't be so costful, and would improve chess quality so that the winner has much less to do with physical abilities than mental ones.

Mar-23-14  Rookiepawn: By the way, and curiously enough, I thought of 33 ... g4 as first option. Of course variants are mind-boggling to me, and I barely skimmed through them before going dizzy, but it strikes me as the only one to create chances on the K side.
Mar-23-14  BOSTER: <Jim Ng5> is very nice.
Mar-23-14  David2009: I don't understand this game at all. Why did Black resign in the final position

click for larger view

or did he lose on time?

If White rushes ahead like a bull at a gate he can lose: 35.Kxg3 Nf4 36.Nxf4 gxf4+ 37.Kf2 Rg6 38.a4 Rff6 39.a5 Rh6 40.a6 Rh2+ 41.Kf1 Rg6 42.a7 Rh1+ 43.Ke2 Rg2+ 44.Kd3 Rd1#. Clearly White has much better but was the position resignable?

POSTSCRIPT: All is clear from <Indigoviolet>'s post - Ivanchuk's flag did indeed fall. IMO a (legal) move is completed when the hand releases the piece: if one's flag falls one loses the game (unl;ess it is already complete for example by checkmate, stalemate or agreement to draw) provided that the opponent claims.

Mar-23-14  BOSTER: < Garech > and company < if Ivanchuk flagged...>.

The correct answer is:
to show the move on the score sheet and the
the time when the move was made automatically , what means that you don't need to press a clock.

Premium Chessgames Member
  agb2002: Black has a rook and a bishop for a queen and three pawns.

White threatens 34.Nxc5 and 34.Rxc6.

The king side pawns and the position of the rooks suggest 33... g4 (33... Bxb6 34.Qxb6 seems to activate the queen):

A) 34.Nxc5 gxf3+

A.1) 35.Kf1 hxg3

A.1.a) 36.Nxe6 g2+ 37.Ke1 (37.Kg1 f2+ 38.Kh2 g1=Q+ 39.Kh3 Rh7#; 37.Kf2 g1=Q#) 37... g1=Q+ 38.Kd2 Rg2+ 39.Kd3 Qd1+ 40.Ke3 Qd2#.

A.1.b) 36.Rb2 g2+ 37.Kg1 (37.Rxg2 fxg2+ 38.Kg1 Rf1+ 39.Kh2 Rh1#) 37... f2+ 38.Rxf2 (else mate in two) 38... Rxf2 39.Qa8+ Kh7 40.Kxf2 g1=Q+ 41.Ke2 Qxc5 wins.

A.2) 35.Kg1 (or 35.Kh1) 35... hxg3 looks similar to A.1.

A.3) 35.Kf2 hxg3+ is even worse for White.

A.4) 35.Kh3 f2 36.Rb1 hxg3 37.Nxe6 g2 looks winning.

B) 34.f4 h3+

B.1) 35.Kh1(2) Rd8 trying to achieve perpetual, unclear.

B.2) 35.Kf1 Rh7 with the threat 36... h2 and 37... h1=Q+.

Premium Chessgames Member
  Jimfromprovidence: This is the commnentary from the official site. Below that is the Houdini analysis of the saving line as well as the 2nd best line.

"In a Leningrad Dutch, according to Radjabov his Ukrainian opponent played an inaccurate 9th move even though this was still known from a game Kramnik-Nakamura, Wijk aan Zee 2010. White went for a positionally illogical plan to exchange the e-pawns and got a strong initiative. The Azerbaijani wisely declined Black’s exchange sacrifice and soon Ivanchuk had to give up his queen for rook and bishop. <Things weren’t exactly clear, and in fact at one moment Black could draw the game with a brilliant move. With seconds on the clock Ivanchuk missed it, and soon after he lost on time ".>

0.00 33...g4 34.f4 h3+ 35.Kh2 Rd7 36.Nxc5 Rd2+ 37.Kg1 Ng5 38.Rxc6 Nf3+ 39.Kf1 Nh2+ 40.Ke1 Nf3+ 41.Kf1 Nh2+

1.87 33... Bxb6 34.Qxb6 g4 35.f4 Rd8 36.Qe3 Rgd7 37.Nf2 h3+ 38.Kg1 Rd2 39.f5 Ng7 40.Qg5 R8d7 41.Qxg4 h2+ 42.Kxh2 Rxf2+ 43.Kh3

Mar-23-14  Chess for life: I wanted to see how quickly Fritz 11 would solve a Sunday "insane" puzzle. I put the game in, and it found 33...g4 rather quickly, but was giving a +2 eval. I thought, well isn't that strange? Shouldn't this puzzle give at least a draw for Black? But then 2 minutes and 22 seconds later, the eval all of a sudden went to 0.00! Amazing.
Mar-24-14  dunamisvpm: This puzzle is really insane. I have been looking at it on and off since it was posted. And I got it right, the 33...g4 reply. And yes, I agree, it should be 33...g4. And white cannot stop one pawn marching to its promotion or white king will be mated.
Mar-24-14  dunamisvpm: My thanks to jimfromprovedence.
Mar-24-14  Rookiepawn: Sorry, off topic: what kind of thing is chrisowen? Is it maybe a bug in the website? Passing secret messages to some mole? I mean man, why do you take such effort? Funny way of being crazy.
Premium Chessgames Member
  LIFE Master AJ: 33...g4!! draws? Amazing!
Premium Chessgames Member
  Domdaniel: <Rookiepawn> - < what kind of thing is chrisowen? Is it maybe a bug in the website? Passing secret messages to some mole? I mean man, why do you take such effort? Funny way of being crazy.>

Perhaps the *rest* of us are crazy, or at least crazier -- writing our banal messages in dreary pellucid prose. <chrisowen> is a poet, and his effortful wordplay is as good a use of time and energy as any.

Oct-07-16  Robin01: Got 60 points on guess the move.
Sep-14-18  Ron: I commented on this game when it was in progress.

I had called 15 Rd3 by Radjabov a "genius" move. Stockfish 9 doesn't evaluate it as highly though. After 15 Rd3 it gives:

15... h6 16. Rbd1 Nd7 17. Rd6 Rf6 18. Rxf6 Nxf6 19. gxf4 Nh5 20. fxe5 Bg4 21. Bc1 Bxf3 22. Bxf3 Qxe5 23. Bg2 Rf8 24. Qe2 Nf4 25. Qg4 h5 26. Bxf4 hxg4 27. Bxe5 Bxe5 28. Rd3 Rf4 29. Kf1 Rf7 30. Kg1 Kg7 31. h3 gxh3 32. Bxh3 Kf6 33. Rf3+ Ke7 34. Rd3 Kf6 + (0.26--) Depth=39/54 0:17:33 1537 MN

Stockfish 9 much prefers 15. Ng5 which Radjabov eventually played.

15. Ng5 Rf6 16. Rd3 h6 17. Qd1 Nd7 18. Bh3 hxg5 19. Bxd7 Bxd7 20. Rxd7 b6 21. Qg4 c5 22. Rbd1 Qe6 23. Qxe6+ Rxe6 24. Rc7 g4 25. Rdd7 Bf8 26. Kg2 Bh6 27. h3 fxg3 28. fxg3 gxh3+ 29. Kh2 a5 30. Kxh3 Rb8 31. Rh7 Bf8 32. Bc1 Rd8 33. Rcd7 Rxd7 34. Rxd7 Rd6 35. Rb7 Rd3 36. Bb2 a4 37. Rxb6 Kf7 + (0.46) Depth=39/58 0:16:01 1375 MN

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