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Aljosa Grosar vs Zsuzsa Polgar
Portoroz/Nova Gorica (1991)
Sicilian Defense: Old Sicilian. Open (B32)  ·  0-1


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find similar games 1 more A Grosar/Zsuzsa Polgar game
sac: 22...f5 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Sep-26-19  kungfufighter888: I am First
Premium Chessgames Member
  An Englishman: Good Evening: The big variation consisted of 32.hxg3,Qh1+; 33.Kxh1,Rh4+; 34.Kg1,Rh1X. Nice variation upon a well known theme.

Why didn't White play 19.Nc7?

Sep-26-19  Walter Glattke: Good morning, 32.hxg3 Qxg3+ 33.Rg2 Qh3 34.Bc5 Re1+ 35.Kf2 Rxc1 36.Rxg6+ hg6 37.Rxc1 -++ 34.Rh2 Rg4+ 35.Kf2 Qxh2+ 36.Kf1 Rg1+ -++ After 34.-Rxe3 can follow 35.Qf2 Bxg2+ 36.Qxg2 Re1+ 37.Kf1 Qxg2+ 38.Kxg2 Rxa1 39.Kxh2 -++
Sep-26-19  Walter Glattke: Quick Analysis:
19.Nc7 Nc4 20.Nxe8 Bb7 21.Nxg7 Be4 22.g3 Qxc5 23.Qxd7 Kxg7 24.Bxc4 Qxc4 25.c3 Bf5 26.Qd4+ +- 19.-Nf3+ 20.Bxf3 Qxc5 21.Nxe1 Bxb2 22.Rb1 Bb7 23.Rxb2 Rxe8 24.Re1 Qc3 25.Rb1 f5 26.e5 +-
Sep-26-19  TheBish: A Grosar vs Zsuzsa Polgar, 1991

Black to play (31...?) "Medium"

In a fantasy variation, I imagined 31...Qxh2+ 32. Kxh2 Rh4+ 33. Kg1 Rh1#. Of course this is ridiculous, as 31...Qxh2+?? is easily answered by 32. Rxh2. But this thought experiment quickly led me to the solution.

31...Bxg3! 32. hxg3

If the rook moves, 32...Bxh2+ is crushing, ripping open the white king's shelter. For example 32. Rg2 Bxh2+ 33. Kf1 (33. Rxh2 Rg4+ wins the rook with mate following soon enough) 33...Bf4 looks crushing.


Always look for double checks! You probably wouldn't sacrifice your bishop and not see this line, if you've ever seen the theme. After 32...Qxg3+ 33. Rg2 Qxe3+ 34. Qxe3 Rxe3 35. Rd2 Black is better, but there are lots of moves left to play.

33. Kxh1 Rh4+ 34. Kg1 Rh1#.

Sep-26-19  Cheapo by the Dozen: Dumb puzzle, IMO. Each move is obvious, as Black builds a material advantage while keeping an attack.

Fortunately, White's queen is too awkwardly placed for counterplay.

Sep-26-19  Cheapo by the Dozen: Oh. I didn't even bother finding the potential 32 ... Qh1+ line, because 32 ... Qxg3+ is so strong.
Premium Chessgames Member
  patzer2: I correctly picked 31...Bxg3! as the solution to today's Thursday puzzle. I didn't get the second move of the combination, but it doesn't matter as any reasonable follow-up wins.

After 32. Rg2, best is 32...Bxh2+ -+ (mate-in-24 @ 35 ply, Stockfish 10). However, several other follow-up moves also win. My follow-up was 32...Be5 -+ (-14.30 @ 34 ply, Stockfish 10) which wins easy enough.

P.S.: So where did White go wrong? The losing move appears to be 26. Ba5? allowing 26...Rxe4 -+ (-2.49 @ 27 ply, Stockfish 10).

Instead, 26.Ba7 Bxe4 27.Rf2 Qxb2 ∓ (-1.03 @ 31 ply, Stockfish 10) gives White drawing chances in a pawn down middle game.

Earlier, instead of 16. Be3 ⩲ (+0.56 @ 30 ply, Stockfish 10), White could have maintained a strong advantage with 16. Qd2 ± (+1.22 @ 33 ply, Stockfish 10).

Sep-26-19  stacase:


Two free Pawns . . . YUM!

Sep-26-19  JoeYeomans: If 19.Nc7? then Nf3+ followed by queen taking the bishop with check then the knight
Sep-26-19  RandomVisitor: Black got into trouble early but had an interesting opportunity with 9...Nxe4:

click for larger view


<44/74 12:39 0.00 9...Nxe4 10.Nxe4 d5 11.Nf2 a6 12.Na3 Re8> 13.0-0 d4 14.Bc1 e4 15.Nc4 Qc7 16.a4 Nb4 17.Bd2 Nd5 18.Nxe4 Rxe4 19.Bd3 Re8 20.Qf3 Qc5 21.b4 Nxb4 22.Bxb4 Qxb4 23.Rab1 Qe7 24.Nb6 Rb8 25.Nxc8 Rexc8 26.Kh1 Qd7 27.f5 Rc7 28.Qf4 Re8 29.Rb6 Be5 30.Qf3 Bg7

Premium Chessgames Member
  patzer2: White could not resist going for the Knight fork 21. Nc7 Bb7 (+0.74 @ 27 ply, Stockfish 10).

However, it was more important for White to first improve the position and attack the Black castled King with 21. Be3 to +- (+1.80 @ 34 ply, Stockfish 10).

Premium Chessgames Member
  malt: Started with 31...B:g3 32.Rg2

(32.hg3 Qh1+ 33.K:h1 Rh4++ 34.Kg1 Rh1# )

32...B:h2+ 33.Kf1
(33.R:h2 Rg4+ 34.Rg2 R:g2+ 35.Kf1 Qh1+ 36.Bg1 Q:g1# )

33...Qh3 34.Kf2 R:e3
(35.Q:e3 Q:g2+ 36.Ke1 Bg3+ 37.Kd1 Be4 wins )

35.R:h2 Qg3+ 36.Kf1 Rf3+ wins

Premium Chessgames Member
  agb2002: Black has a bishop and a pawn for a rook.

White threatens gxh4.

The open a8-h1 diagonal suggests 31... Bxg3:

A) 32.hxg3 Qh1+ 33.Kxh1 Rh4+ 34.Kg1 Rh1#.

B) 32.Rg2 Bxh2+

B.1) 33.Rxh2 Rg4+ wins decisive material while keeping the attack.

B.2) 33.Kh1 Bf4+ 34.Kg1 Bxe3+ wins.

B.3) 33.Kf1 Bf4

B.3.a) 34.Bd2 Qh1+ 35.Kf2 (35.Rg1 Qf3#) 35... Re2+ 36.Kxe2 Qxg2+ and mate in two.

B.3.b) 34.Bxf4 Rxf4+ 35.Kg1 Bxg2 wins (36.Kxg2 Rf7+ 37.Kg1 Qh7#).

B.3.c) 34.Re2 Qh3+ 35.Kf2 Qg3+ 36.Kf1 Bxe3 wins.

C) 32.Re2 Bxh2+ 33.Kf1 (33.Kh1(g2) Rxe3+; 33.Rxh2 transposes to B.1) 33... Bg3 with three pawns for the exchange and attack.

Sep-26-19  saturn2: I saw 31...Bxg3
32.Rg2(after hxg3 both Qxg3 and Qh1+ win) Bxh2+33.Kf1Qh334.Bg1Rf4+35.Ke1Qxg2
Sep-26-19  RandomVisitor: <JoeYeomans>The computer takes your idea one step further, in a complicated position... after 19.Nc7

click for larger view


<52/85 57:34 -0.84 19...Nf3+ 20.Kh1 Nxh2 21.Rf5> gxf5 22.Nxe8 Bb7 23.Nxg7 Bxe4 24.Bf3 Nxf3 25.gxf3 Bc6 26.Qd3 Qg3 27.Rf1 Qh3+ 28.Kg1 Kxg7 29.Rf2 h6 30.Bd4+ Kh7 31.Rg2 Rg8 32.Rxg8 Kxg8 33.Qe2 Qg3+ 34.Qg2 Qg5 35.Be3 Bxf3 36.Qxg5+ hxg5 37.Bxg5 Kh7 38.Kf2 Kg6 39.Bf4 Bd5 40.a3 a5 41.a4 bxa4 42.c3 Ba2 43.Kf3 Bb3 44.Be5 Bd5+ 45.Kf4 Bc4 46.Kf3 Ba6 47.Bf4 Bb5 48.Kf2 Kf6 49.Ke3 Bc6 50.Kd4 Be4 51.c4 Ke6 52.Bc7 Bb7 53.Kc5 Ba6 54.Bf4 d6+ 55.Kd4 Bb7 56.Bh6 Bc6 57.Bf4 a3

Sep-26-19  mel gibson: I saw this one within 3 seconds -
I must be a genius.

Stockfish 10 says mate in 19:

31... Bxg3

.. Bxg3 (♗d6xg3 ♕c1-d2 ♗g3xf2+ ♕d2xf2 ♕h4-h3 ♕f2-g3 ♖e4-g4 ♔g1-f2 ♖g4xg3 h2xg3 ♕h3-h2+ ♔f2-e1 ♗b7-f3 ♗e3-f2 ♕h2-h1+ ♔e1-d2 ♕h1xa1 a2-a3 ♕a1-f1 ♗f2-c5 ♕f1-e2+ ♔d2-c3 ♕e2-c4+ ♔c3-d2 ♕c4xc5 b2-b3 ♕c5-d4+ ♔d2-c1 ♗f3-e4 b3-b4 ♕d4-c3 ♔c1-d1 ♕c3xc2+ ♔d1-e1 ♗e4-d3 a3-a4 ♕c2-e2+) +M19/57 187)

Sep-26-19  Hercdon: I got the board moves until I came up with 34 ... Rg4 which Stockfish prefers and leads to a quicker mate. This was such an easy position, with lots of possible good news
Sep-26-19  RandomVisitor: After 23...Rxe8 White has an even game with 24.Be2

click for larger view


<47/72 12:28 0.00 24.Be2 Re6 25.Bd4 Bxe4 26.Rf2> Bc6 27.c3 Qh4 28.Qb3 h5 29.Rd1 Kh7 30.Qb4 a5 31.Qb3 Qe7 32.Bxe5 Rxe5 33.Bf3 Re1+ 34.Rxe1 Qxe1+ 35.Rf1 Qe3+ 36.Kh1 Bxf3 37.gxf3 Qe2 38.Kg1 h4 39.Rf2 Qe1+ 40.Rf1 Qe2

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