Anyone can hang a piece, but a good blunder requires thought. There is one sort of move that is almost always played after calm, if not happy contemplation: resigning. Sometimes it is wrong to resign – or to agree to a draw.
It was Tim Krabbe, a great connoisseur of the game who wrote these famous words. He also presented as many as 35 positions to illustrate his theme.*
In the following position in a correspondence game White resigned, thinking his position was hopeless (No, there was no Fritz to help in those days 
).
But he would have won.
Georges Mathot – Walter Baumgartner, France 1958, Corr. Game
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1-Rc8 ( 1-Rxf , 2-Qxh , 2-Kxh, 3- Rh8#) (1-h6 , 2-Qg5, 2-Be8 ,3-Rxe,3-Qxe , 4-Nxe, and white win cause the easy palm promotion ) , 1-Be8 , 2-Rxe , 2-Qxe ,3- Nxe 3-Rxf , but with no much time , white do the check mate or can more a queen
Was that Bobby The Great (crazy) Fischer who said it? 😮
Dear Jim Tent,
Fischer did not say it.
Was he crazy?
The case is complicated.
Here is a two-part review of a Fischer biography:
http://www.kingpinchess.net/2012/08/bobby-fischer-revisited-part-i/
http://www.kingpinchess.net/2012/09/bobby-fischer-revisited-part-2/
Dear Cjajr,
Your notation leaves something to be desired.
Otherwise 1. Rc8 Rxf2? 2.Qxh6! Kxh6 3. Rh8 # looks very good.
How about 1…Qg8!? instead of 1…Rxf2 ?
Was that Svidler or Kasparov?
Dear Jimmy,
No,it’s neither Svidler nor Kasparov.
You would soon know the real author of the words.
Watch this space.