@ H.G.: Today I tried the sequence 1.Nb4 Ka7 (illegal) 2.Qa6 (illegal) followed by clicking on 'Play it!' and then 'Move'. This time I noticed it printed out 'I resign' (highlighted in red), a bit ABOVE Carlos' diagram.
I suppose it's possible I missed 'I resign' on most of my earlier test tries simply because I was looking for the words 'I resign' below the diagram instead, i.e. where the moves 1.Nb4 Ka7 2.Qa6 were printed out. Otherwise, I'm still not sure why Black's king took my queen consistently on the first day I tried the test. Anyway, I can live with it even if there is a bug somewhere, rather than my hallucinating. Thanks for the help!
@ H.G.: Today I tried the sequence 1.Nb4 Ka7 (illegal) 2.Qa6 (illegal) followed by clicking on 'Play it!' and then 'Move'. This time I noticed it printed out 'I resign' (highlighted in red), a bit ABOVE Carlos' diagram.
I suppose it's possible I missed 'I resign' on most of my earlier test tries simply because I was looking for the words 'I resign' below the diagram instead, i.e. where the moves 1.Nb4 Ka7 2.Qa6 were printed out. Otherwise, I'm still not sure why Black's king took my queen consistently on the first day I tried the test. Anyway, I can live with it even if there is a bug somewhere, rather than my hallucinating. Thanks for the help!