What is the famous study (a century or so old) in which White achieves a fortress draw with 1.B(Q)a4+ Kxa4, 2.b3+, 3.c4+ 4.d5+, 5.e6 locking the pawn chain?
I’m already inflicting it on a few humans here. But they will certainly get the point. Inflict it on the machines instead! Penrose’s point (and I submit that Rudolph’s study makes the same point as Roger Penrose’s, and far more artisticially) is that such positions are beyond a chess-playing program’s comprehension. I tested with Stockfish 8: he’s right.
But one need not be a grandmaster (like Roger’s brother, the #1 player in the UK in the 1960s) to get the point of either position.
If there’s a young person in your life (age 16-20) passionate about math & science, Penrose’s The Road to Reality is a wonderful gift.
I am not as big a fan of his “quantum nature of consciousness” work. Hey, QM makes semiconductors possible, too.
That seems way too high. White can get away from the checks in 13 moves, and I doubt whether it should take 20 more moves after that, with black already locked into the back rank (or a-file).
I was crestfallen when I fed the famous Korol’kov study into Fritz some years ago. Both Fritz and Stockfish solve the position in less than a second. In Stockfish’s eyes, heading for the lost KBN vs. K ending is maximum resistance
Korol’kov 1951
White to play and win
Minimax destroyed most of our aesthetic conceits about chess. (The twentieth anniversary of Kasparov’s loss to Deep Blue is coming up…)
But Penrose is right to note that we still spectacularly outperform the algorithms in certain rare positions.