Ramond's RPG Adventure v2.0

[Ramond]

Oh, well, as far as I interpreted it, spells have a range, and beyond that you take a penalty equal to your HPH for each square further away from the target. Thus, assuming each square actually is considered 1 square, I count six squares to I4 from that position, giving me a hit chance of 93%.

Or have I missed something?

Yes, the HPM modifier is added per square from your target (starting with range 2). So at a range of 5 you have 72% hit chance (5 is the ordinary maximum of your Fire Bolt). There's the possibility to go over your ordinary maximum range (also in the FAQ, last Q in the section currently), and since you would be range 6 from your enemy, hit chance is halved once, making it 36%