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Saturday, December 26, 2009

On the second day of Christmas, I had to return the present

Yesterday's ChessBase puzzle was not just solved, but "cooked" (that's composer-speak for "refuted") by two Ph.D.'s in mathematics.  Most of you know of GM John Nunn from his many great books; Noam Elkies is no slouch.

Here's an easier problem with a similar idea.  See ChessBase for discussion and hints.


W.E. Rudolph
La Stratégie 1912
White to play and draw
Discussion here

This might be the perfect example of a position that humans (even near-beginners) can understand easily, but today's computers are not yet able to understand.
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3 comments:

  1. Bill BrockSaturday, December 26, 2009 at 1:56:00 PM CST

    This one I solved in a few seconds....

    ReplyDelete
  2. joSunday, December 27, 2009 at 2:25:00 AM CST

    Hiya,

    As far as I can see the 2009 puzzle nr.1 was perfectly solveable in its original version.
    I found it rather quickly and was therefore a little suspicious, but when I fed it into Junior, it soon showed a universal draw with my line.
    Take look here and let me know what you think.

    ReplyDelete
  3. Bill BrockSunday, December 27, 2009 at 3:44:00 AM CST

    Wow! I don't see it either.

    I'd looked at 1.Nd7+ but I'd incorrectly assumed that opening the g-file would be decisive for Black. But I don't see a way to sac the black queen on g2: White will always play Rg1 at the right time.

    ReplyDelete