From Chessbase, "Challenges for humans and computers"
Now for a genuine challenge for humans – although it is of interest to know if computers find the key move and, more importantly, how long it takes them to understand that it draws.
"White makes one more move and it’s a draw! Keres, the two Byrnes, Lothar Schmid, Bisguier and I sat staring at this position for more than half an hour. We couldn’t find it. Can you?" Indeed none of the chess players in Mainz were able to solve this position, and Hans was convinced that computers would also fail miserably. So I bet him a glass of whisky at the bar that Rybka would find the key move. Not necessarily understand why it holds the draw, but it will find the move by discovering that all other moves lose badly and quickly. Hans lost his bet, Rybka found the right strategy in one minute and two seconds.
My Android version of Stockfish 11 was able to find this one quickly, however Komodo did not. System was an i5 Google Pixel Slate.
"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
The Android Version of Deep Fritz 15 also finds it, but it will take much longer to score it 0.00
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
AdminX wrote: ↑Sun May 10, 2020 8:02 pm
From Chessbase, "Challenges for humans and computers"
Now for a genuine challenge for humans – although it is of interest to know if computers find the key move and, more importantly, how long it takes them to understand that it draws.
... https://en.chessbase.com/post/challenge ... -computers
[d]6R1/P2k4/r7/5N1P/r7/p7/7K/8 w - - 0 5
...
I took out this one from my hard test set a couple of years ago because it became too easy.
Less than 5 seconds on an average (4*3GHz) computer to get a 0.00 score.
