Playing with test sets, several times I come across a behavior of the chess engines which I can't understand: Let's say I have the endgame
[FEN "8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1"]
which after ...
I am using the Arena GUI to run Stockfish. I set up the following position.
[FEN "r2q1rk1/2p1bppp/p1n5/1p1pP3/3Pn3/1P3N1P/1P3PP1/RNBQR1K1 w - - 0 11"]
At a search depth of 16 half moves ...