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February 5, 2008, 12:17   #2
Mondkalb
Knight

Join Date: Apr 2007
Posts: 940
Rod of Teleport Other has a high level (45).
Your char has poor magic device ability (which will increase with level and intelligence). To calculate correct chance use the spoiler file:
http://www.juti.nl/hugo/Angband/Spoiler/ability.spo
This is a quote from the above mentioned file:
Quote:
 USING A WAND, STAFF, OR ROD --------------------------- To calculate the base ability of using a wand, staff, or rod, use the following charts. Begin with the base class ability, then add the race modifier. To take level into account, add in the product of your character's experience level and the class bonus per level modifier. To this add the appropriate intelligence modifier. This gives a numerical rating of your character's skill at using magic devices. Code: ``` Bonus per Class Base Level Int. Bonus Int. Bonus ------------------- ------------------ ------------------ Warrior 18 0.7 3-7 0 18/130-18/139 11 Mage 36 1.3 8-14 1 18/140-18/149 12 Priest 30 1.0 15-17 2 18/150-18/159 13 Rogue 32 1.0 18-18/19 3 18/160-18/169 14 Ranger 32 1.0 18/20-18/39 4 18/170-18/179 15 Paladin 24 1.0 18/40-18/59 5 18/180-18/189 16 18/60-18/79 6 18/190-18/199 17 Race Modifier 18/80-18/99 7 18/200-18/209 18 ----------------- 18/100-18/109 8 18/210-18/219 19 Human 0 18/110-18/119 9 18/220+ 20 Half-Elf 3 18/120-18/129 10 Elf 6 Hobbit 18 Gnome 12 Dwarf 9 Half-Orc -3 Half-Troll -8 Dunadan 5 High-Elf 20``` To calculate the probability of successfully activating a device, first divide your character's device skill rating by 2 if your character is currently confused. Then subtract the level of the wand, staff, or rod to be activated, with a maximum subtrahend of 50. Call the resulting number K (which may be negative). If K is at least 3, then the chance of successfully activating the wand, staff, or rod is (K-1) in K. On the other hand, if K is less than 3, the probability of successfully activating the device is very low yet nonzero; the probability of success is 2 in 3*(4-K).
This makes:
18-8+(36*0,7)+3=38
Level of rod: 45
K=38-45=-7
Chances are: 2 in 33
So you were still quite unlucky.

Last edited by Mondkalb; February 5, 2008 at 12:26.