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Alonso Zapata vs Rafael Vaganian
Thessaloniki Olympiad (1984), Thessaloniki GRE, rd 2, Nov-20
French Defense: Tarrasch. Closed Variation (C05)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Aug-01-11  Artsemthon: 73.g6+ Kxf6 74.a5! bxa5 75.g7 Kf7 76.Kh7 Bxg7 stalemate!
Aug-01-11
Premium Chessgames Member
  perfidious: This is a saving resource well worth remembering-I've a feeling Zapata planned it but inverted his moves.
Dec-16-12  vinidivici: the correct way to win is the waiting move...

72...Bc1
73.Kh5 Bb2
74.Kg4 Kg6
75.Kf4 Bc1+
76.Ke5 Bxg5
77.Kd6 Bd2
78.Ke7 Bb4+
79.Ke6 Bc3
80.f7 Bb4! (not Kg7 81.Ke7 Bb4+ 82.Ke8((now black in zugzwang)) Bc5 83.Kd7 draw) 81.f8=Q Bxf8 82.Kd5 Bb4
83.Kc4 Ba5 0-1

Mar-31-16  QueensideCastler: It's draw after 64...Bxb4 according Lomonosov Tablebases.
Apr-14-20
Premium Chessgames Member
  g15713: E. 1.0
Black to move at 57


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Black played 57...g6 which made it easier for White to draw by exchanging a pair of pawns.

I looked at 57...Rd4 58. Rxd4 Bxd4

E. 1.1
White to move


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But FinalGen considers this position a draw for White by playing any of the following moves 59. g5 or Kf3 or Kg3 or Kh3.

Stockfish - 60-minute analysis:

2) -0.48 (44 ply) 57...Kg8 58.Re8+ Kf7 59.Rb8 Kf6 60.Rc8 Bd4 61.Rf8+ Ke7 62.Rb8 Ke6 63.Rd8 Rd1 64.Kf3 Rf1+ 65.Ke4 Bg1 66.f5+ Ke7 67.Rc8 Bh2 68.g5 Rf4+ 69.Kd3 Rxf5 70.h6 gxh6 71.gxh6 Rd5+ 72.Kc2 Rh5 73.h7 Rxh7 74.Rc6 Rh3 75.Rxb6

Shredder says this position is a draw.

E. 1.2
Stockfish's line 2 after 59. Rb8


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Black could play 59...Rd4 which appears to win a pawn and looks promising however

Stockfish - 60-minute analysis:

1) -0.33 (43 ply) 59.Rb7+ Kg8 60.Kf3 Rxa4 61.g5 Ra3+ 62.Kg4 Ra8 63.Kf5 Rc8 64.Kg4 Rf8 65.Kf3 Bg1 66.Ke4 Bf2 67.Kf3 Bc5 68.Ke4 Kh8 69.Kf3 Bd4 70.Ke4 Bf2 71.Kf3 Bg1 72.Ke4 Kg8 73.Kf3 Bh2 74.h6 gxh6 75.Rxb6 hxg5 76.Rg6+ Kf7 77.Rxg5

Shredder says this position is a draw.

Going back to diagram E. 1.0

Game continued 57...g6 58.hxg6 Kxg6 59.Kh2 Ra3 60.Kg2 Kf7 61.Kh2 Kf6 62.Kg2 Rb3 63.Kh2 Rb4 64.Rxb4 Bxb4

E. 1.3
White to move at 65


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Chess user <QueensideCastler: It's draw after 64...Bxb4 according Lomonosov Tablebases.>

According to Syzygy - tablebase draw.

Reference: 'https://syzygy-tables.info/?fen=8%2...

Game continued with:

65.Kg3 Ke6 66.Kf3 Kd5 67.g5 Bd2 68.Kg4 Ke6 69.f5+ Ke5

E. 1.4
White to move at 70


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Instead of 70. f6? White can draw with 70. g6! - Syzygy

Reference: 'https://syzygy-tables.info/?fen=8%2...

Stockfish - 15-minute analysis:

1) =0.00 (59 ply) 70.g6 Bh6 71.Kh5 Bf8 72.Kg4 Kf6 73.Kf4 Bc5 74.Ke4 Bd6 75.Kd5 Bh2 76.Kc6 Bg1 77.Kd5 Bh2

Game continued 70.f6 Ke6 71.Kh5 Kf7 72.Kh6

E. 1.5
Black to move at 72


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Chess user <vinidivici: the correct way to win is the waiting move...>

Syzygy says 72...Bc1 or Be3 or Bf4 wins
Reference: 'https://syzygy-tables.info/?fen=8%2...

Black played 72...Bc3? and White now can draw.

E. 1.6
White to move at 73


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Chess user <Artsemthon: 73.g6+ Kxf6 74.a5! bxa5 75.g7 Kf7 76.Kh7 Bxg7 stalemate!>

E. 1.7


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Chess user <perfidious: This is a saving resource well worth remembering>

Game instead continued with:

73.a5 bxa5 74.g6+ Kg8 0-1

Chess user <Artsemthon: 73.a5? mixes up the move order and loses>

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