Turn Undead Mechanics and Rates

[Leuko]

I've been using Turn Undead a lot lately, it's great when it hit but when it doesn't it's a real pain.So I thought to myself that if I looked at the mathematics of the chance equation I should be able to figure out an optimum chance that it will hit.

Here is the equation:

[(20*skillLVL) + Luk + Int + BaseLV + (1 - Target HP/TargetMaxHP*200]/1000% chance

I know one could easily say to simply pump as much in to the variable categories to get the best possible chance.However, if there is a maximum 70% chance that TU is successful then it must be possible over allocate these variables.
I'm not horribly great at math but here is my best attemp:

[(20*skillLVL) + Luk + Int + BaseLV + (1 - Target HP/TargetMaxHP)*200]/1000% = 70%

Or

[(20*skillLVL) + Luk + Int + BaseLV + (1 - Target HP/TargetMaxHP*)200]/1000 = . 70

Let's make to assumptions now:
You max this skill so that the skill level becomes a constant
The target’s HP is at max since no damage has been accrued, therefore:

Target HP/TargetMaxHP = 1
(1 - Target HP/TargetMaxHP*)200 = 0
The equation is now reduced to:

[200 + Luk + Int + BaseLV ]/1000 = . 70

Doing some simple algebra:

Luk + Int + BaseLV = 500

On that, we can conclude that the sum of the three variables but equal 500 to give a 70% chance
Maybe it’s just me but that doesn’t seem right, I cannot think of any situation that would permit anyone to approach that 70% chance, at best with max level and stats ( no equip bonuses) one barely has a 50% chance.

I am no mathematician but I feel that there is an error in my logic somewhere, I’m not too good with percentages.
Perhaps someone else would like to take a stab at it?

[kurip]

turn undead % never go over 70% sucess no matter your stats, no matter your lv, no matter the monster.

rms already have the math done, you could've just used the stat calculator
http://ratemyserver.net/stat_sim.php

[Leuko]

Thanks! I didn't want to go over 70%, just wanted to know how close one can get to that chance

[kurip]

from self experience, since i survived on this place for long without ic so would have to be on TU build all the time

99 int + gloria + some luk gears (wtv you want, doesnt need to be anything heavy on luck)+ TU lv 10 and TU should be ohKOing most undead

i remember doing this on nameless with complete crap gears, would just gloria, rush at one necromancer, and TU. would barely miss it

[Bagel-kun]

hehehe the whole first part is multiplied by 200 AFTER you add the values together.

So its this [(20*skill level)+luck+int+baselv+monster hpstat THEN after that you multiply 200 and then divide by 1000