Underpromotion to bishop?


I realised after I posted this that I put it in the wrong section but can't seem to delete it. If a mod is watching you may delete as I have posted the question on endgame study now.

I realised after I posted this that I put it in the wrong section but can't seem to delete it. If a mod is watching you may delete as I have posted the question on endgame study now.
next to "new topic", if you are on your thread, you can click "edit topic" (or something like that), and then you can do whatever you want

yes, thats why promoting queen is best 99% of times, but look at the first example, if you promote either queen or knight, black is stalemated, only promoting bishop wins, a nice example