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Vincent McCambridge vs Johann Hjartarson
Grindavik (1984), Grindavik ISL, rd 9
Gruenfeld Defense: Exchange. Modern Exchange Variation (D85)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
May-01-16  Howard: McCambridge's 16.f5 was not only a TN, but it also took first place in the Informant as the best TN for that volume.

Now...I gotta figure out why that move was so impressive.

May-01-16
Premium Chessgames Member
  whiteshark: Whichever game has been played earlier, Eingorn vs V Tukmakov, 1984 ?
May-01-16
Premium Chessgames Member
  perfidious: <whiteshark> The Grindavik event was held during March, with the Soviet championship beginning in early April.

http://www.365chess.com/tournaments...

May-01-16
Premium Chessgames Member
  whiteshark: Thanks <perf>! So Eingorn has done his homework. Although I wonder about this speedy information transfer acrosss the Iron Curtain in the early 80ties ?
May-02-16
Premium Chessgames Member
  perfidious: <whiteshark> One wonders whether Eingorn knew of the game, though, given that information travelled much more slowly back then; believe Jon Speelman wrote of this in his collection of games in the 1990s.
May-02-16
Premium Chessgames Member
  offramp: This is McCambridge's Mercedes.
May-02-16  Howard: Rather interesting how my nonchalant comment from just yesterday, has generated so much interest in this game !

At any rate, what "perfidious" is apparently saying is that Eingorn played McCambridge's surprising novelty, and he, too, scored a win--just a month after the McCambrige game ?

Remind me to check the Informant when I get home this evening.

May-02-16  Granny O Doul: I'd like to commend the above 'McCambridge's Mercedes' to the attention of the game-naming committee.
Aug-07-16  RandomVisitor: 21.Re3 is worth a look.
Aug-07-16
Premium Chessgames Member
  patzer2: This doesn't appear to be too difficult a Sunday puzzle, as 21. Bxe5 Qxe5 22. Re3 Qe6 forces the loss of the Queen.

Stubbornly trying to save the Queen with 22... Qf6 results in a quick mate after 23. Re8+ Kf7 24. d7 Bxd7 25. Bh5+ Rg6 26. Qxd7+ Qe7+ 27. Qxe7#.

<RV>'s suggestion, 21. Re3 to may also be decisive as it forces the win of the exchange after 21...Be6 22. Bxe5 Qg6 23. Rg3 Qf7 24. Bxg7 Bxg7 25. Qh6 to (+1.77 @ 18 depth, Deep Fritz 15).

Aug-07-16  NBZ: Ah a pity Black played 23. ... Qe6. The line I had in mind (probably the critical line) is 21. Bxe5 Qxe5 22. Re3 Qa1+ 23. Kf2! Qxh1 24. Re8+ Kf7 25. Bh5+. Now if 25. ... Kf6 26. Qh6+ wins outright. Or if 25. ... Rg6 26. Re7+ Kf8 27. Bxg6+ hxg6 28. Qh6+ wins.
Aug-07-16  RandomVisitor: After 20...e5


click for larger view

Komodo-10.1-64bit:

+3.51/41 21.Re3 Be6 22.Bxe5 Qh6 23.Qc3 f4 24.Re4 Qh4+ 25.Kd1 Qf2 26.Bxg7 Bxg7 27.Qe1 Qxe1+ 28.Rxe1 Bd7 29.Bf3 Bf6 30.Rxf4 Kg7 31.Rf1 Bg5 32.Bxb7 Bxf4 33.Bxa8 Bxd6 34.Bd5 Be8 35.g3 Be5 36.Re1 Kf6 37.Kd2 h5 38.Rf1+ Kg7 39.Rb1 Kf6 40.Rb7 a5 41.Rb6+ Kf5 42.Kd3 Bd4 43.Rb8 Ba4 44.Bf3 Bd7 45.Bxh5 Ke5 46.Bf3 Be6 47.Re8 Kd6 48.Ra8 Ke5 49.h4 Bf2 50.Rxa5

<+2.20/41 21.Bxe5 Qxe5 22.Re3> Qa1+ 23.Kf2 Qxh1 24.Re8+ Kf7 25.Bh5+ Rg6 26.Bxg6+ Kxg6 27.Rg8+ Kf7 28.Rxh8 Qxh2 29.Qg5 Bd7 30.Rxa8 Qxd6 31.Qg8+ Ke7 32.Qxh7+ Kf6 33.Qh6+ Ke7 34.Qg7+ Ke6 35.Qg6+ Ke7 36.Qg5+ Kf7 37.Qg8+ Ke7 38.Qf8+ Ke6 39.Qxd6+ Kxd6 40.Rxa7 Kc6 41.Ke3 Be6 42.Ra4 Kd7 43.g3 Kd6 44.Kd3 Bc8 45.Ra3 Kc6 46.Ra5 Kd6 47.Ra4 Kc6 48.Ra8 Kc7 49.Kc3 Bd7 50.Rh8 Bc6 51.Kd3 Bg2 52.Rf8

Aug-07-16
Premium Chessgames Member
  patzer2: Based on <Rv>'s deep computer analysis, it would appear the positional 21. Re3 (+3.51/41) is as good or better than the flashy game tactic 21. Bxe5 (+2.20/41).

One point of 21. Re3 is that 21...Rxg2?? drops the Rook to the Queen fork 22. Qd5+ .

Aug-07-16  Patriot: Time is of the essence—especially in Chess. This is why I started looking at a swift attack with disregard for material. The question is how can white take advantage and get the game rolling quickly? My first thought is 21.Bxe5 Qxe5:

22.Re3 Qa1+ 23.Kf2 Qxh1 24.Re8+ Kf7 25.Bh5+ …

25…Kf6 26.Qh6+ Rg6 27. Rf8+ Ke6 28.Qe3+ Kxd6 29.Rd8+ (29…Bd7 30.Qd3+ Ke6 31.Qxd7+ Kf6 32.Qd6+ Kg5 33.Bxg6 ) 29…Kf7 30.Qe7+ Kb8 31.Qe5+ Rd6 32.Qxd6#

25…Rg6 26.Bxg6+ hxg6 27.d7 looks winning.

Or…

22.Re3 Qf6 23.Re8+ Kf7 24.Bh5+ Rg6 25.d7 looks winning.

Aug-07-16  Patriot: I missed a few things here and there like ...Bd4+ (forgot about that useless bishop on h8).

Apparently 25...Kf6 26.Qh6+ is a draw after 26...Rg6 27.Bxg6 Bg7. But 26.Rf8+ leads to mate.

Aug-07-16
Premium Chessgames Member
  YouRang: Insane Sunday 21.?


click for larger view

Okay, I (white) have a far-advanced passed Pd6 pawn that I can't advance right now. I also have a pin Pe5, and perhaps attacking this pin and opening the e-file can help with the Pd6. So my first thought was to put heat on black's Pe5 with <21.Re3>


click for larger view

I don't see anything black can do to help this pawn. He may try 21...Qh4+, but that doesn't really buy any time since 22.g3 blocks and attacks the Q.

Black may try to avoid losing the exchange with <21...Rf7>, and then <22.Bxe5>


click for larger view

Black's queen is under attack and curiously short of places to hide!

- 22...Qg6? 23.Rg3 pins Q+K
- 22...Qh6? 23.Rg3+ wins Q with discovered attack.
- 22...Qd1? 23.Rg3+ Bg7 24.Qd5 pins R with Bh5 threat to win it.

I'm think black's best reply might be <21...Bd7>, which blocks the pawn and activates the Ra8, and then <22.Bxe5>


click for larger view

I've won a pawn, and now it looks like I win the exchange. I have a rook on the open e-file, and that Pe6 to make headaches for black. I'm feeling pretty good about this.

~~~~

Checking with computer, I see that 21.Re3 is just as good as 21.Bxe5. It's not as cute, but easier to find IMO. Also, I see that my followup (while winning) wasn't "best", but hey, finding a way to win a Sunday puzzle without having to actually go insane is good enough for me. :-)

Aug-07-16
Premium Chessgames Member
  agb2002: White is one pawn down.

The g-pawn is hanging although it's indirectly protected by Qd5+.

There are a number of ideas in the position. For example, 21.Qd5+ Qf7 22.d7 Qxd5 23.dxc8=Q+ wins a piece but fails to 22... Bxd7.

Or 21.Qd5+ Be6 22.Qxe5 Qxe5 23.Bxe5 Rxg2 24.Bg3 but Black has 24... Rxe2+ 25.Kxe2 Bxc4+.

Another idea is 21.Re3, aiming at e5:

A) 21... Qg5 22.Bxe5

A.1) 22... Rg6 23.Bxh8 Kxh8 24.Re8+ Kg7 (24... Rg8 25.Qxg5 wins) 25.Qxg5 Rxg5 26.d7 wins.

A.2) 22... Rd7 23.Bxh8 Kxh8 24.Re8+ Kg7 25.Qxg5+ wins.

B) 21... Rd7 22.Rxe5

B.1) 22... Rxd6 23.Re8+ Kf7 24.Bh5+ wins decisive material.

B.2) 22... Qxd6 23.Qxd6 Rxd6 24.Re8+ Kf7 25.Bh5+ Rg6 26.Rxh8 wins a rook.

C) 21... Rg6 22.Rxe5

C.1) 22... Qxd6 23.Qxd6 transposes to B.2.

C.2) 22... Qh4+ 23.g3 Rxg3 24.Qd5+ Kf8 25.hxg3 wins decisive material.

-----

I'm not sure but I'd play 21.Re3.

Aug-07-16  devere: 21.Re3! wins easily, so there is no good reason to risk the complications that follow 21.Bxe5.
Aug-07-16  drollere: black is up a p and perhaps has the edge in space, but white's pieces are more active. both sides have a passed pawn and immediate threats of check at Qd5+ and Qxc5 for white and Rxg2 and Qh4+ for black.

white's Bxe5 is nasty, so possibly something to do with

21. Qd5+ Be6
22. Bxe5(p) Bxd5(Q)
23. Bxf6(Q) Rxg2(p)
24. Rg3+ Rxg3(R)
25. g3(R)

can suggest a better attack.

21. Qd5+ Be6 22. Qxc5 Rxg2 doesn't look happy.

i settled on:

21. Bxe5 Qxe5 (this won't end well)
22. Re3 Qe6 (i looked at Qa1+)
23. Rxe6 Bxe6
24. Qh6

which is wrong (Rg6) but stuck in my head because i'd rejected Rh3 and Qh6 as a way to penetrate the back rank. but i did get 3 moves deep on this one.

hjartson made some great defensive moves in the endgame, a real slugfest from both sides.

Aug-07-16  RandomVisitor: A final look, after 20...e5


click for larger view

Komodo-10.1-64bit:

+3.53/42 21.Re3 Be6 22.Bxe5 Qh6 23.Qc3 f4 24.Re4 Qh4+ 25.Kd1 Qf2 26.Bxg7 Bxg7 27.Qe1 Qxe1+ 28.Rxe1 Bd7 29.Bf3 Bf6 30.Rxf4 Kg7 31.Rf1 Bg5 32.Bxb7 Bxf4 33.Bxa8 Bxd6 34.Bd5 Be8 35.g3 h5 36.Re1 Bd7 37.Kd2 a5 38.Rb1 Kf6 39.Rb6 Ke5 40.Bf3 Be8 41.Ra6 Be7 42.Ra8 Bg6 43.Ra7 Bg5+ 44.Kc3 a4 45.Rxa4 h4 46.Ra5 Be3 47.gxh4 Bd4+ 48.Kb3 Kf4 49.Bd5 Kg4 50.Ra6 Bd3 51.Rh6

+2.22/42 21.Bxe5 Qxe5 22.Re3 Qa1+ 23.Kf2 Qxh1 24.Re8+ Kf7 25.Bh5+ Rg6 26.Bxg6+ Kxg6 27.Rg8+ Kf7 28.Rxh8 Qxh2 29.Qg5 Bd7 30.Rxa8 Qxd6 31.Qg8+ Ke7 32.Qxh7+ Kf6 33.Qh6+ Ke7 34.Qg5+ Kf7 35.Qg8+ Ke7 36.Qf8+ Ke6 37.Qxd6+ Kxd6 38.Rxa7 Kc6 39.Ke3 Be6 40.Ra4 Kc7 41.g3 Kc6 42.Kd3 Bf7 43.Ra7 Be6 44.Ra8 Bf7 45.Rh8 Be6 46.Rh7 b6 47.Rh6 Kd6 48.Rh5 Ke7 49.Rh8 Kd6 50.Ra8 Kc6 51.Ra7 Kd6 52.Ra6

Aug-07-16  RandomVisitor: After the novelty 16.f5


click for larger view

Komodo-10.1-64bit:

<+0.95/42 16...exd5 17.e6> d4 18.g4 b6 19.Bf3 Ba6 20.Qd3 Bg7 21.0-0 Rc8 22.Qb3 Qe7 23.Qa4 Bb7 24.Qxa7 Bxf3 25.Qxe7 Rxe7 26.Rxf3 h5 27.gxh5 gxf5 28.Rxb6 Rce8 29.Rxf5 Rxe6 30.Rxe6 Rxe6 31.Kf2 Bf8 32.Rd5 Ra6 33.Rd8 Kf7 34.h6 Rxa2+ 35.Kg3 f5 36.h7 Bg7 37.h8Q Bxh8 38.Rxh8 Rc2 39.Bf4 Rxc4 40.Rd8 Rc2 41.Rd7+ Ke6 42.Rd6+ Kf7 43.h4 Rc3+ 44.Kg2 Rc2+ 45.Kf3 Rc3+ 46.Ke2 Rh3 47.Bg5

Aug-08-16  RandomVisitor: After 9.Be2


click for larger view

Komodo-10.1-64bit:

<+0.16/45 9...cxd4 10.cxd4 Qa5+> 11.Bd2 Qxa2 12.0-0 b6 13.Qc1 Qe6 14.Re1 Bb7 15.Bc4 Qd7 16.Bh6 Rc8 17.Bxg7 Kxg7 18.Qb2 Rxc4 19.Ne5 Qxd4 20.Nxc4 Qxb2 21.Rxb2 Nd7 22.f3 Rc8 23.Rd2 Rc7 24.Ra1 Bc6 25.Rda2 a6 26.Rc2 Bb5 27.Ne3 Nc5 28.Nd5 Rb7 29.Rc3 e6 30.Nxb6 Nxe4 31.fxe4 Rxb6 32.Rac1 Rd6 33.Kf2 Rd4 34.Ke3 Rb4 35.Kf4 a5 36.g3 a4 37.h4 h6

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