I was just testing out the feature alluded to in the "Playing Games Wrong" thread by restarting my original dungeon with all the levels and items my character gained on his first run, and I made a couple chance discoveries. Both relate to hit/miss outcomes, so Trev may be particularly interested.
First, apparently the manual wasn't lying about level affecting THAC. I went through the entirety of floors 1, 2, and 3 with 100% hit accuracy!
 It felt good one-shotting all those nasties who gave me trouble the first time around.  And since I'm pretty sure I haven't added any major dexterity-boosting equipment since those first five floors, that leaves my level ups as the only explanation for my increased accuracy.
  It felt good one-shotting all those nasties who gave me trouble the first time around.  And since I'm pretty sure I haven't added any major dexterity-boosting equipment since those first five floors, that leaves my level ups as the only explanation for my increased accuracy.Second, at one point I was fighting a gargoyle at the outside corner of a room. The wall was only taking up the left 1/4 of the screen, but apparently it was blocking our attacks, because we both were consistently missing. I moved away from the room and the problem was immediately solved. So, something to look out for there.


 
 








