Kevin Pacey wrote on Sun, Sep 9, 2018 09:56 PM PDT:
Regarding N+B being unable to mate lone K except in rare positions according to McCooey's database, long ago I thought I convinced myself to some degree that a N plus a B on the colour of the centre hex could normally perform the task. To clarify, I'm wondering if such 91-hex board endgame database(s) have taken into account whether the B runs on the same colour as the centre hex, or else the other case for colour being different than that of the centre hex, in case the difference is very or even slightly significant to the statistical result for win percentage expected.
Regarding N+B being unable to mate lone K except in rare positions according to McCooey's database, long ago I thought I convinced myself to some degree that a N plus a B on the colour of the centre hex could normally perform the task. To clarify, I'm wondering if such 91-hex board endgame database(s) have taken into account whether the B runs on the same colour as the centre hex, or else the other case for colour being different than that of the centre hex, in case the difference is very or even slightly significant to the statistical result for win percentage expected.