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Alexander Khalifman vs Liviu Dieter Nisipeanu
wcc elim (1999), Las Vegas, NV USA, rd 6, Aug-19
Catalan Opening: Closed Variation (E01)  ·  1-0


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Given 22 times; par: 73 [what's this?]

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sac: 20.Nce4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  patzer2: be3292, sorry I missed your questions. If I understand correctly, your first question seems to be why not play 42. Qxb4? This move does win, but 42. a3 is also a good alternative. So my answer is that in an easily won position it is a matter of preference. As to the second question, about the significance of 41...Bd3, my answer is it doesn't appear to have much if any significance. Black is clearly lost and at this point 41...Bd3 seems to be just pushing wood on momentum.
Jan-03-05  newold: <flyboy216> thanks for your precision !
Jan-07-05  LIFE Master AJ: Its still an incredible game ... several have e-mailed asking me to annotate it, but I don't have the time right now.
Aug-04-06  InspiredByMorphy: 20. ...Qe7 looks like it may hold...
Aug-04-06  Rocafella: Most things except the text are OK for black
Premium Chessgames Member
  crafty: 20...♕e7 21. ♗xe5 dxe4 22. ♘xe4 ♖d8 23. ♗f4 ♘f6 24. ♘g5   (eval 3.82; depth 14 ply; 250M nodes)
Aug-06-06  InspiredByMorphy: Crafty's analysis:

click for larger view

Thanks Crafty.

Premium Chessgames Member
  offramp: We are running out of puzzles.

If you can read this, please play MORE games of chess.

Premium Chessgames Member
  diagonalley: there were/are a number of moves in this puzzle which i completely failed to comprehend... must resolve to avoid sunday's puzzles altogether
Nov-17-13  M.Hassan: "Insane"
White to play 20.?
White has a Knight for 3 pawns.

Both Knights can sit on e4 square which is the attacking square to the Black Queen:

20.Nce4 dxe4
21.Nxe4 Qc7
<if...Bxb2 23.Qxe6+ Kh8 24.Nf7+ Kg8 25.Nh6++ Kh8 26.Qg8#>

Black may choose to let go of his Queen.:
23.Qxe6+ Kh8
24.Nf7+ Qxf7
<if...Bxa1 Qf8#>
26.Bxc6 Nd6
Game takes longer but White is the winner on grounds of stronger materials.

time to check
Very close to the game line

Premium Chessgames Member
  agb2002: White has a knight for three pawns.

Black threatens ... Nc7 and ... b4.

The weak pawn on e6 suggests 20.Re1 Bxc3 21.Bxc3:

A) 21... Nc7 22.Be5 Qd7 (22... b4 23.Bxd6 Bxe2 24.Bxc7 + - [B+N vs 2P]) 23.Bxc7 Qxc7 24.Qxe6+ Qf7 (24... Kh8 25.Qe8+ Rxe8 26.Rxe8#; 24... Kf8 25.Rf1+ Qf7 26.Qxf7#) 25.Qxc6

A.1) 25... Bb7 26.Qxb5 Qf2 27.Qe2 + - [N].

A.2) 25... Rd8 26.Qxa6 Qf2 27.Bxd5+ Kh8 (27... Rxd5 28.Qc8+ Kf7 (28... Qf8 29.Re8) 29.Qe8+ Kf6 30.Qf8+ and 31.Qxf2) 28.Qe6 + - [B+N].

B) 21... Bc8 22.Bh3

B.1) 22... Nc7 23.Be5 Qe7 24.Bxc7 Qxc7 25.Bxe6+ Bxe6 (25... Kh8 26.Bxd5; 25... Kf8 26.Qf2+ Ke7(8) 27.Bxc8+) 26.Qxe6+ Qf7 (26... Kf8 27.Rf1+; 26... Kh8 27.Qe8+) 27.Qxc6 + - [N vs P].

B.2) 22... Kf7 23.Nf3 h6 24.Ne5+ followed by Qh5 looks very bad for Black. For example, 24... Kg8 25.Qh5 Nf6 26.Qf7+ Kh7 (26... Kh8 27.Qxf6 gxf6 28.Nf7+ Kg7 29.Nxd6 Bd7 30.Bxe6, etc.) 27.Ng4 wins.

B.3) 22... e5 23.Bxe5 Qe7 24.Bg2 + -, followed by Nf3, Nd4, etc.

C) 21... Kf7 22.Bh3 looks similar to previous lines.

D) 21... d4 22.Ne4 Qd8 (22... Qd5 23.Nf6+; 22... Qd7 23.Nc5 Qd6 24.Bxd4 Qxd4 25.Qxe6+ Kf8 (25... Kh8 26.Qxe8+) 26.Nd7+) 23.Ng5 Qxg5 (23... dxc3 24.Qxe6+, etc.) 24.Qxe6+ Kf8 25.Bb4+ c5 26.Bd5 wins.

Premium Chessgames Member
  agb2002: I saw the first two moves but missed 22.Ng5 which I mention in my line D. I would probably have seen it if I had reconsidered 20.Nce4 after analyzing 20.Re1.

Stockfish evaluates 20.Re1 at about +1.6 after few minutes, perhaps enough to win.

Premium Chessgames Member
  morfishine: I started with the other Knight <20.Nde4> but came up short playing 22.Nc5 and overlooking a Black defense based on Bc8 and Be6, which only nets a pawn after giving the piece back :(

PM: Of course, the GM is much more accurate :)


Premium Chessgames Member
  Penguincw: I thought of 20.Nxb5, but realized after 20...Bxb2, the knight is pinned, and white just lost a bishop for a pawn.
Premium Chessgames Member
  chrisowen: Am aced for one knight drifts over ignoble miission,

to e4 free egs affabled aim clod effect get delve in bishop stab a big go blow cuffed at enflow down,

the river dangled fob key be-fasten fingers again,

mooted knight cage I sac e4 first good blood am bull shin beck and call it is a biffed in do the math afraid jed and ned are too strong in case you were wondering be judge off re you have chubb I give it is a joke in be now tell the truth what possesses you to lock d7 in c5 i edifices in snuffs,

beck and checked jangle all the way to the bank he engages aka c5 when a5 on demand f8 too could capture f1 giving an equal game black now ledge off in gets out flanked from within evermore a culpa d7 in should stay put kind lode epicentre scued off e5,

by neccessity ogle knight he in cable wires f6 in black at sixes and sevens be free glooms instigated,

a weave approach basically inceed black bad accustom in a tour c5 free for prolongs aim farm c5 in no time like light a dilemma seek too finish him off in cedes a ground knight in fatefuls to,

affabled change up ride a lion c5 ah free success eg I ment in bag have a kin dead ducky chubbs reticcence able sees ai dervish in you duffed a boot 20.Nce4 all straight forward ok in advance his aims it honour in hope 20...dxe4 21.Nxe4 Qc7 22.Ng3 Bxb2 23.Qxe6+ sense for pluck a pawn yet black isnt finished by a long way be fan dangled ah a kicker mitigates in a bet entombed see king harangues effect in rug 23...Kh8 24.Nf7+ a windmill gg hoof in cattle product which comes first mate or,

sacrifices in efface bind a fang be bang 24...Qxf7 25.Qxf7 light two pawns ahead rescued by the fact free foilable knight gains her majesty accounts for a fog lifted he define f7 threatens ie queen h8 king be enough shut-off in edges 25...Nd6 (3.46)

Marginal gains accomplished by garage in e4 minds d6 a threat picking h8 in to a corner you manage to advantages and queen creates a flurry once g5 lightin driving seat off leg e4 be zap in d6 cross even see e5 cudgel aka negotiates a b2 off in e6+ blew,

him away a f7+ sets up lick at enact h8 cable,

buffed about black forced to abandon e8 post hub big gains augment in rich again really be a dynamo re bus man in family 26.Qf1 or c7 black bishop captures right rook care indeed knight blocked bisjop plus for a8 lead against a g2 and a1 queen cage a6 raid e8 very more likely to bi-focals 29.Bxc6 Rc8 (4.46)#

Premium Chessgames Member
  kdogphs: Got this one on the first try!
Premium Chessgames Member
  Marmot PFL: Did not find the combination, which was pretty deep. I would be happy to play white after 20 Re1 so I probably wouldn't look that long anyway.
Nov-17-13  Edeltalent: <offramp: We are running out of puzzles. If you can read this, please play MORE games of chess.>

No sooner said than done :-) This is from my league game today. White to play and win, it's about Thursday difficulty.

click for larger view

Premium Chessgames Member
  Jimfromprovidence: I though that for sure after 21 Qc7, below that white had to take the bishop because of ...Bxb2 and the threat on the a1 rook.

click for larger view

To me, if you could see all of the way through that queen exchange and know all along that the a1 rook was untouchable you should be playing chess for a living.

Premium Chessgames Member
  Jimfromprovidence: Here's another great Khalifman game that I never get tired of studying.

B Lalic vs Khalifman, 1997

Premium Chessgames Member
  Eggman: I don't see it: what happens on 24...Kg8, and if 25.Nh6++ then 25...Kf8? Where is the win?
Premium Chessgames Member
  morfishine: <Eggman> Try 24.Nf7 Kg8 25.Nh6+ Kf8 26.Rf1+ Nf6 27.Qg8+ Ke7 28.Qxg7+ Kd8 29.Qf8+ Ne8 30.Rd1+ Qd7 31.Nf7+ Kc7 32.Rxd7+ Kxd7 33.Bh3+


Nov-17-13  The17thPawn: <Eggman> - See reza254 post at top of page for one possible line. I'm sure there are others. FYI I couldn't figure how to beat 25...Kf8 either.
Nov-17-13  Patriot: White has a piece for three pawns.

20.Nxb5 Bxb5 21.Qxe5 Qxe5 22.Bxe5 leaves white slightly ahead.

I'm not sure what else there is. Another candidate was 20.Nce4 dxe4 21.Nxe4 Qc7 but I'm not sure what this accomplishes. There are a few more candidates I considered but 20.Nxb5 is the best I could find.

Nov-17-13  Patriot: <<Penguincw>: I thought of 20.Nxb5, but realized after 20...Bxb2, the knight is pinned, and white just lost a bishop for a pawn.> You're right--I completely missed that.
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