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Bernard Huguet vs Ljubomir Ljubojevic
Las Palmas (1973), Las Palmas ESP, rd 8, Apr-11
English Opening: Agincourt Defense. Catalan Defense (A14)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jan-24-14  mel gibson: The computer played from move 40.

35 ... Nxg4+
36 fxg4 Qh1
37 Ra7 Qxh2+ (the computer played 37 Qc2)
38 Kf1 e4
39 Qd1 e3

The computer then played

40 R1a1 Qh1+
41 Ke2 f3+
42 Nxf3 Qxf3+
43 Ke1 Qh1+
44 Ke2 Qg2+
45 Ke1 Qg1+
46 Ke2 Qf2#

Good game.

Jan-24-14  Doniez: What I saw at a glance was the h1 square as the most important for the black Queen. But I couldn't find a way to remove hurdles and let the Black Queen move along the diagonal.
Jan-24-14  morfishine: Of course, Lobo probably had it all figured out at this point. I'll need to analyze 3 moves to see which is the most effective:

(1) <35...Nxg4+> The most forcing move since its with check

<36.fxg4 Qh1> Only after finding this move did I think this continuation had potential

<37.Ke2 e4 38.Kd1 exd3 39.Bd2 Nf3> Overwhelms the Knight and Black breaks in

(2) <35...Nxf3> A different idea that also focuses on f3 as the breakthrough point but eliminates both White's pawns f3 & g4

<36.Nxf3 Nxg4+ 37.Ke2 e4 38.dxe4 Qb5+ 39.Qd3 Rxe4+> This looks very strong and may force a win, but I don't see the winning follow up after 40.Kd2

(3) <35...Neg2> This attempt to overload the Knight fails to 36.Ra7 and Black will end up losing a piece.

Conclusion: With #3 eliminated and #2 unclear, I'd say Lobo played 35...Nxg4+ with the powerful follow up 36...Qh1

*****
PM: I'm satisfied to have gotten on the right track, especially with finding 36...Qh1; However, I always seem to drift when it comes to high-level defense

*****

Jan-24-14  PJs Studio: I got Nxg4 & Qh1 Qxh2+ but then played 38...f3? Does that lose?
Jan-24-14  PJs Studio: Somebody's been studying their Lubojević. ;) Can't blame them either. What a super accurate game!

Btw, I thought after 38...e4, white might have a perpetual with 39.Rxg6. I don't think it's there, but it was to tough for me calculate because there is no mate on move 39...

Jan-24-14  Cheapo by the Dozen: I saw the ideas of the g4 sacrifice and Qh1, mainly because I couldn't see any other line that controlled f1, g1 and h1 and once.

I also saw the idea of the e4 break, as Black needed more forces in the attack.

But I didn't have a clue how to break through against passive defense, given White's control of the 2nd rank. In the actual game he vacated it, presumably because of counterplay, but I didn't see a strong plan if he didn't.

That said, I would have been inclined to try the move over the board anyway, as it seemed after Qh1 Black had excellent prospects for at least perpetual check. (Although even that was in doubt if the king sprinted for d1.)

Jan-24-14  diagonalley: i didn't get this.. really nice - though hard for a friday
Jan-24-14  Castleinthesky: I chose to sack the other knight but could not work out a conclusive result. A good Friday puzzle.
Jan-24-14  sfm: Adolf Anderssen once wrote:
"Get a knight firmly posted on K6 [=e6,e3] and you may go to sleep. Your game will play itself." With the usual limitation that comes with all rules of thumb, there is a lot of truth in it.
Jan-24-14  moi: 37. Bxf4 is a tougher defense!
Jan-24-14
Premium Chessgames Member
  Penguincw: I was looking to follow up 35...Nxg4 36.fxg4 with 36...e4.
Jan-24-14  PJs Studio: Ok. I checked this well! It seems that my (bad) idea of 38...f3 isn't losing but 38...e4 is much better.

I also checked with my computer and it gave 37.Qc2 and 37. Rb1 as much better choices for white(albeit he's still getting crushed) - showing 37...e5 doesn't work nearly as well and chose 37...Rf8!

Is my machine a fish?

Jan-24-14
Premium Chessgames Member
  agb2002: Black has a knight for a bishop.

The position of the white king suggests 35... Nxg4+ to allow ... Qh1 and ... e4:

A) 36.fxg4 Qh1

A.1) 37.Qd1 e4 38.dxe4 Rxe4 39.Re2 Qxh2+ 40.Kf1 Qh3+ 41.Kf2 Qxg4 with attack and three pawns for the bishop.

A.2) 37.Ke2 e4 looks very dangerous for White.

B) 36.Kg1 Nxf3+ - + [N+2P vs N].

C) 36.Ke2 Nxh2 seems to win material. For example, 37.Ra7 Qc8 38.Qf7 Rg8 39.Qh5 Qh3 - + [N+2P vs B].

Jan-24-14  Patriot: Material is even.

35...Nxf3

36.Nxf3 Nxg4+ 37.Kg2 e4 looks really interesting.

I got too late of a start on this one.

Jan-24-14  Patriot: I thought about 35...Nxg4+ 36.fxg4 Qh1 but settled on 35...Nxf3. Oh well, too tired for this tonight.
Nov-29-19
Premium Chessgames Member
  eternaloptimist: Dark and Stormy Knights

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