Alonso Zapata vs Rafael Vaganian (1984)

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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]

FEN COPIED

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Aug-01-11		Artsemthon: 73.g6+ Kxf6 74.a5! bxa5 75.g7 Kf7 76.Kh7 Bxg7 stalemate!

Aug-01-11		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		g15713: E. 1.0 Black to move at 57 click for larger view 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 click for larger view 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 click for larger view 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 click for larger view 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 click for larger view 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 click for larger view 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 click for larger view Chess user <Artsemthon: 73.g6+ Kxf6 74.a5! bxa5 75.g7 Kf7 76.Kh7 Bxg7 stalemate!> E. 1.7 click for larger view 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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