As far as I know, the go infinite command should not give a bestmove until the stop command is given, but when I give a position fen, it automatically gives a bestmove because when there are very few pieces left, it is easy to increase the depth and it gives a bestmove at 127 depth. Why do you limit this? The fen I use is: position fen 8/5kR1/8/3K4/8/8/8/8 b - - 0 143