We know that despite what is shown in the movies and such, most chess games don't end by a "checkmate" move and oftentimes one side realizes that they are losing and resigns before the end. Now this begs the question: Has there been any serious games in the history of chess that the resignation was itself a blunder? Meaning that, the person who resigned had a chance of winning that they missed to spot at the time.

By serious game I mean a GM-level (or if there is none, a near-GM-level) match. To be more specific, let's exclude the timed games that the possibly-winning side has lost by timeout. Also there was some games that one side deliberately resigned due to some personal reasons. Those are also not the ones that I am looking for.

  • Here you can find some examples.
    – emdio
    Oct 7, 2021 at 20:19
  • wiki: Resignation in won positions
    – BCLC
    Oct 7, 2021 at 21:10
  • Shouldn't it be "the person who resigned had a chance of not losing"? Oct 9, 2021 at 0:06
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    @Acccumulation OP's question then is not necessarily wrong but simply something stricter than your question?
    – BCLC
    Oct 9, 2021 at 13:30
  • FYI 'begs the question' doesn't mean 'leads to the (follow-on) question ...'. Instead it means to assume or assert the answer to a more fundamental question without actually answering it. Oct 10, 2021 at 15:20

2 Answers 2


The official source that people link to when this question comes up is Tim Krabbe's excellent blog post from more than 20 years ago now: The ultimate blunder. He collected every single game in the database (pre 1999) where someone resigned in a winning position and explained the possible reasons behind the resignation for each game as well.

Some very famous examples include:

[White "Von Popiel"]
[Black "Marco"]
[Title "Von Popiel-Marco, Monte Carlo 1902"]
[FEN "7k/1b1r2p1/p6p/1p2qN2/3bP3/3Q4/P5PP/1B1R3K b - - 0 1"]

"This is the earliest, the most famous, and still the clearest example of this blunder. Black resigned because he saw he was going to lose the Bd4. He could have won on the spot with 36...Bg1"

[White "Torre"]
[Black "Parker"]
[Title "Torre-Parker, New York 1924"]
[FEN "2kr4/ppp3Pp/4RP1B/2r5/5P2/1P6/P2p3P/3K4 w - - 0 1"]

"The Mexican grandmaster did not see what he could do against Rc1+ and promotion, and resigned. With 1.Rd6! he could have saved the day, and even have won: e.g. 1...Rxd6 2.g8Q+ Kd7 (Rd8 3.Qxd8+ and 4.f7) 3.Qf7+ Kc6 4.Qe8+ Kb6 5.Qe3 Kc6 6.Qxc5+"

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    I felt your answer was better, so I just merged my text into your answer. Hope you don't mind Oct 7, 2021 at 20:24
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    @Vilx- If white takes bishop, then black grabs queen and should have enough material to win. If white doesn't take bishop (eg grabs undefended rook), Qxa2 is checkmate. Oct 8, 2021 at 12:57
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    'Won on the spot' really implies a mate-in-one. I spent several confused minutes looking for it.
    – Brady Gilg
    Oct 8, 2021 at 20:19
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    Agreed, white takes the bishop with the king, then black takes the queen with the rook. Then presumablly white takes the rook with the bishop. Overall white is up a queen for a rook and a knight. That seems a long way from "won on the spot". Oct 9, 2021 at 1:27
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    Is it normal to show the board upside down like this? The image in the linked blog shows white's king at the bottom for the first game , so normal counting of coordinates like d4 works. I found it confusing that the square 4th from the left and 4th from the bottom didn't hold a bishop when trying to match up the text with the board. Oct 10, 2021 at 6:06

Sure. See Wiki: Resignation in won positions. Some examples:

  1. Ignatz von Popiel vs. Georg Marco 1902

  2. Gyorgy Negyesy vs. Karoly Honfi 1955

  3. Raul Sanguineti vs. Miguel Najdorf

  4. Victor Korchnoi vs. Geert van der Stricht

Even Karsten Müller in h endgame series talks about how GMs (or at least pros) have resigned in drawish(/winning?) positions.

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