Raul Sanguineti vs Miguel Najdorf (1956)

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Raul Sanguineti vs Miguel Najdorf
Mar del Plata (1956), Mar del Plata ARG, rd 12, Mar-26
English Opening: Anglo-Indian Defense. King's Indian Formation (A15) · 1-0

ANALYSIS [x]

FEN COPIED

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Apr-16-04		acirce: This is a famous example of resigning in a won position. Black defends against mate and keeps a large material advantage with 58...Rg4.

Apr-16-04		vangogh228: Well, after 59.Qe7+, the Black c and d pawns will fall while the Black King restricts the influence of the Rook. I would not call this "resigning in a won position," but it certainly was premature, in my opinion.

Apr-16-04		acirce: The d pawn will not fall. 59. Qe7+ Kf5 60. Qd7+ Kf4 61. Qc6 Be4 62. Qf6+ Ke3 and black should win. I agree this is not the most striking example because White can fight on for long, but it has become somewhat famous probably because it is Najdorf.

Apr-16-04		vangogh228: You're right. If Black trades off the f pawn, the d pawn stands. But, what about h getting snatched next... then g is at risk. Once White retreats his King back into the fray, its a tossup at best. Black should have, perhaps, held out for a possible draw offer, but I don't see much more than that as a reasonable hope. If, after Ke3, then ... Qe6. If Rf4, Qxh6. If Rh4, Qe5, threatening Qg3+ unless the rook moves away from the pawns. Either way, the rook is trapped, the bishop pinned and the pawns have big trouble. The worst case scenario I see for white is that he gets black in a perpetual check.

Apr-16-04		acirce: I'm going to be stubborn :) After Qe6 in that line, how about h5 instead. After that for example Rg3 and h4, depending on what white does. I may be wrong but I don't see how white can stop black's simple plan of queening the pawn with the help of his three quite active and effective pieces! Also the d4 pawn may fall too in some lines but it may also be unnecessary - it would give Black a totally winning material advantage though. A little danger in practical play would be perpetual check, but objectively this is won as I see it. Probably better for white is Qxh6 instead of Qe6 but black shouldn't have trouble here either advancing the g pawn.

Aug-16-05		crafty: 58. ... ♖xg4 59. ♕e7+ ♔f5 60. ♕d7+ ♔f4 61. ♕xc6 ♗e4 (eval -1.25; depth 16 ply; 1000M nodes)

Jun-20-06		Pawn and Two: I think White can draw after 58...Rxg4. Consider the following continuation: 59.Qe7+ Kf5 60.Qd7+ Kf4 61.Qd6+ Ke3 62.Qe6+ Re4. Now I now believe White can win the kingside pawns by; 63.Qxf6 Bh5 (or 63...Be8 64.Qxh6 Kxd4 65.Qxg5 (Fritz 9 evaluation (.00) (18 ply)) 64.Qxh6 Be2 65.Qxg5+ Kxd4 66.Kc7. I do not see how Black can make progress in the final position. Fritz 9 gives an completely equal evaluation after 65.Kc7, (.00) (18 ply).

Feb-24-08		whiteshark: This is a case of <resignation because to a sacrificial shock>. Focussing only on <58...Rxd4/Re1 59.Qe7#>

Dec-06-08		Fusilli: Sanguineti could have won with 58.Qg8+ Ke7 (if 58...Bf7 59.Qd8 and mate follows) 59.Qxg6 and both 59...Rxd4 and 59...Rxg4 lose to 60.Qg7+. Najdorf resigned because he thought there was no defense against Qe7# and didn't see 58...Rxg4. One of the worst blunders of his career!

Dec-07-08		Pawn and Two: <Fusilli: Sanguineti could have won with 58.Qg8+...> The ending of this game was a parade of missed opportunities. Sanguineti played 47.Re8+?, missing his strongest continuation, 47.b7!. After 47.b7! Re3+ 48.Kb4 Re1 49.Re8+ Kxe8 50.b8Q+ Kd7 51.Qb7+ Kd6 52.Qc8 Rb1+ 53.Kc3, and if: (.89) (21 ply) 53...Rf1 54.Qd8+ Ke6 55.Kb4 Rxf3 56.Qc7 Rxh3 57.Qxc6+ Ke7 58.Qxd5, White is winning. When Najdorf played 54...Rc3+?, he missed a likely drawing continuation: (.42) (27 ply) 54...f6! 55.Kb6 Rh1 56.Kc7 Kf7 57.Qd7+ Kf8 58.Qxc6 Kg7 59.Qxd5 Rc1+ 60.Kb6 Rb1+ 61.Kc5 Rc1+ 62.Kd6 Bf7. Sanguineti then played 56.Qf8?, missing the winning continuation: (2.77) (22 ply) 56.Qg8+ Bf7 57.Qf8 f5 58.Qxh6+ Kd7 59.gxf5 Rb3+ 60.Ka5 Rb5+ 61.Ka4 Rb7 62.Qxg5. Najdorf then erred by playing 56...Re3?. He had good drawing chances by: 56...h5! 57.Qg8+ Bf7 58.Qc8+ Ke7 59.Kc7 Bg6 60.Qg8 c5 61.Qd8+ Kf7 (.44) (21 ply) 62.dxc5 Rxc5+ 63.Kd6 Rc4 64.Qe7+ Kg8 65.Qxf6 Kh7 66.gxh5 Bxh5 67.Qxg5 Bf7. Then Sanguineti played 58.Kd8?, missing the winning continuation 58.Qg8+!. Finally Najdorf resigned in a position where he could still draw by 58...Rxg4!!. Heinrich Fraenkel in "The Delights of Chess", relates how after this game, one of the spectators carefully approached Najdorf and said, <"Excuse me, grandmaster, I am merely a beginner, and I may have overlooked some combination too deep for the like of me, but why, please why didn't you play 58...Rxg4?> The reason was, Fraenkel explained, Najdorf had just not seen the saving defense, and neither had his opponent.

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