Combat Tables

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I.A. Clerics, Druids, and Monks
I.B. Fighters, Paladins, Rangers, and 0 Level Halflings and Humans
I.C. Magic-Users and Illusionists
    I.D.1. Thieves and Assassins
I.D.2. Assassins' Table for Assassinations
II. Attack Matrix for Monsters
III. Matrix for Clerics Affecting Undead
IV. Matrices for Psionic Combat
Using the Combat Tables
Opponent Armor Class Descriptions
Creatures Struck Only by Magic Weapons
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Progression on the Combat Tables
Combat
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DMG

Using The Combat Tables:
Find the level of the attacker on the appropriate chart and matrix that with the armor class of the defender.
The resulting number or greater must be rolled on a d20 for a successful hit.
Penalties && bonuses may modify either the die roll or the number needed to hit,
as long as one method is used consistently. <1> <2> <3>

Question: Will the new attack matrix (AC system)
in the DMG work with the MM?

Answer: Yes, it will.
All D&D <[sic?]> material that says AD&D is meant to be used together.
You will have no trouble playing the monsters with the attack tables found in the DMG.
(Note: THACO numbers have been included in the MM, in the NO. OF ATTACKS field)
 
c = CLERIC, druid, monk f = FIGHTER, paladin, ranger, and 0-level halflings and humans mu = MAGIC-USERS and illusionists t = THIEVES and assassins m = MONSTER Psionic

eg.
IF
url = ct.htm
target = #c6
THEN

to-hit numbers for a 6th-level cleric are displayed

<>

ATTACK MATRICES FOR MISSILE AND MELEE COMBAT, CLERICS AFFECTING UNDEAD, PSlONlC COMBAT
I. Attack Matrices for Dwarves, Elves, Gnomes, Half-Elves, Halflings, Half-Orcs, and Humans
    A. Clerics, Druids, and Monks
    B. Fighters, Paladins, Rangers, and 0 Level Halflings and Humans
    C. Magic-Users and Illusionists
    D.    1. Thieves and Assassins
           2. Assassins' Table for Assassinations

II. Attack Matrix for Monsters

III. Matrix for Clerics Affecting Undead

IV. Matrices for Psionic Combat
    A. Psionic vs. Psionic in Mental Combat
    B. Psionic Attack upon Defenseless Psionic
    C. Psionic Blast Attack upon Non-Psionic Creature
    D. Psionic Attack Ranges and Damage Adjustment

Opponent Armor Class Description (If Armor is Worn):
 
Armor Class Type of Armor
2 Plate mail + shield
3 Splint or banded mail + shield / 
plate mail
4 Chain mail + shield / 
splint or banded mail
5 Scale mail + shield/chain mail
6 Studded leather or ring mail + shield/scale mail
7 Leather or padded armor
+ shield/studded leather or ring mail 
8 Leather or padded armor
9 Shield only
10 None

AC below 10 is not possible except through cursed items. Armor
class above 2 is easily possible due to magical bonuses and dexterity
bonuses. To determine a "to hit" number not on the charts, project upwards
by 1's (5% increments), repeating 20 six times before continuing
with 21 (cf. MATRIX I.A.).

I.A.    ATTACK MATRIX FOR CLERICS, DRUIDS, AND MONKS
Level 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
1-3 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25*
4-6 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23*
7-9 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21*
10-12 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20*
13-15 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20*
16-18 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
19+ -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

<* Natural 20 required, at least.>

Missiles: -5 at long range, -2 at medium range.

I.B.    ATTACK MATRIX FOR FIGHTERS, PALADINS, RANGERS, BARDS, AND 0 LEVEL HOBBITS && HUMANS
Level 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
0 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25* 26*
1 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25*
2 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24*
3 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23*
4 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22*
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21*
6 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20*
7 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20*
8 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20*
9 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20*
10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20*
11 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
12 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
13 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
14 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
15 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
16 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
17+ -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

<* Natural 20 required, at least.>

Missiles**: -5 at long range, -2 at medium range.

* Note: Half-elves use the attack matrix as elves do,
    while non-player character half-orcs use the attack matrix for monsters.
    Dwarves, elves and gnomes are never lower than 1st level (unlike halflings and humans, which may be of 0 level).
    Bards fight at their highest level of fighter experience.

<disambiguate the * in the half-elf/half-orc note with the * for N20+N in the tables above>
<for now, I just put the whole THACO column in bold. however it is done, it might not be a bad idea to highlight this column, somehow>
    <as well, a note about the use of the 20N+ notation, when recording THACO, might be useful>

Special Note Regarding Fighters' Progression: This table [was redesigned] to
allow fighters to advance by 5% per level of experience attained, rather
than 10% every 2 levels, if you believe that such will be helpful in your
particular campaign. If you opt for a per level advancement in combat
ability, simply use the table but give a +1 "to hit" bonus to fighters who
attain the second level of experience shown in each group of 2 levels, i.e.
1-2, 3-4, etc. [already done!]
You may, of course, elect not to allow per level combat advancement.

<the per level advancement is the one shown above>

Optional Rule: Where a fighter of extremely high level or
with many bonuses "to hit" actually requires a negative score
to hit his or her targer, then at the GM's option, the negative
score may be converted into a positive and applied as additional
damage to the automatic hit. Thus, for example, a 20th level
fighter with 19 STR and a +5 sword attacking an AC2 dragon
would require a roll of -8 to hit it; the character would be
allowed to modify his or her damage roll by +8.
- OSRIC

I.C.    ATTACK MATRIX FOR MAGIC-USERS AND ILLUSIONISTS
Level 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
1-5 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25* 26*
6-10 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24*
11-15 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21*
16-20 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20*
21+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20*

<* Natural 20 required, at least.>

Missiles**: -5 at long range, -2 at medium range.

** Normal, not magical. <>

I.D.1    ATTACK MATRIX FOR THIEVES AND ASSASSINS
Level 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
1-4a 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25* 26*
5-8b 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24*
9-12c 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21*
13-16d 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20*
17-20d 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20*
21+d 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

<* Natural 20 required, at least.>

Missiles**: -5 at long range, -2 at medium range.

a  Thieves and assassins double [x2] damage from a surprise back stab.
b  Thieves and assassins triple [x3] damage from a surprise back stab.
c  Thieves and assassins quadruple [x4] damage from a surprise back stab.
d  Thieves and assassins quintiple [x5] damage from a surprise back stab.

I.D.2.    ASSASSINS' TABLE FOR ASSASSINATIONS*

                                        Level of the Intended Victim
Level 
of the 
Assassin
0-1 2-3 4-5 6-7 8-9 10-11 12-13 14-15 16-17 18+
1 50% 45% 35% 25% 10% 1% --- --- --- ---
2 55% 50% 40% 30% 15% 2% --- --- --- ---
3 60% 55% 45% 35% 20% 5% --- --- --- ---
4 65% 60% 50% 40% 25% 10% 1% --- --- ---
5 70% 65% 55% 45% 30% 15% 5% --- --- ---
6 75% 70% 60% 50% 35% 20% 10% 1% --- ---
7 80% 75% 65% 55% 40% 25% 15% 5% --- ---
8 85% 80% 70% 60% 45% 30% 20% 10% 2% ---
9 95% 90% 80% 70% 55% 40% 30% 20% 5% ---
10 99% 95% 85% 75% 60% 45% 35% 25% 10% 1%
11 100% 99% 90% 80% 65% 50% 40% 30% 15% 5%
12 100% 100% 95% 85% 70% 55% 45% 35% 20% 10%
13 100% 100% 99% 95% 80% 65% 50% 40% 25% 15%
14 100% 100% 100% 99% 90% 75% 60% 50% 35% 25%
15 100% 100% 100% 100% 99% 85% 70% 60% 40% 30%

*Or attacks on helpless opponents by any character class (see COMBAT section). <>

The percentage shown is that for success (instant death) under near optimum conditions.
You may adiust slightly upwards for perfect conditions
    (absolute trust, asleep and unguarded, very drunk and unguarded, etc.).
Similarly, you must deduct points if the intended victim is wary, takes precautions, and/or is guarded.
If the assassination is being attempted by or in behalf of a player character a complete plan of how the deed is to be done should be prepared by the player involved,
and the precautions, if any, of the target character should be compared against the plan.
Weapon damage always occurs and may kill the victim even though "assassination" failed.
 

Q: Do assassins have to roll to hit
when attempting assassination?

A: This question sparked considerable
controversy among the sages. Gaming
groups should choose whichever of the
two following rulings is most appropriate
and desirable for the campaign and PCs:

1. Assassination is not a melee tactic; it
cannot be performed against a surprised
PC or NPC during a regular, played-out
battle. In order to perform an assassination,
an assassin PC must turn over an
exacting plan for the act to the DM, who
evaluates the plan and rolls the dice on the
Assassins' Table For Assassinations on page
75 of the DMG. No "to hit" roll is required;
the roll on the table merely condenses all
of the various die rolls together into one
package for fast results.

2. Assassination is a melee tactic but can
only be used against surprised opponents
and cannot be combined with backstabbing;
a "to hit" roll is thus required
Players Handbook, page 29) unless the
victim is helpless (see the DMG, page 70).
If the attack hits, the DM rolls on the
assassination chart to see if the assassin
kills the victim outright. If the assassination
fails, the victim still suffers normal
weapon damage. Poison can be used with
an assassination attack.
(139.67)


Quote, by CombatWombat51:
Ok, one more question In the assassin's matrix in the DMG, the footnote says that assassins should plan out their assassination.
That gives me the impression that the percentage chance of success is based more on the whole event of assassination, rather than on a single attack roll.
But in the PHB, it simply says that an assassin can attempt to assassinate a victim whenever the assassin has surprise.
Lastly, the footnote in the DMG says that certain modifiers should be incorporated.
Could you give me some examples of what types of modifiers for what types of circumstances should be used?


Play of an assassin where a kill was to be made by the PC was meant to require both a written plan delivered to the DM and then full expanation and roleplay on the part of the player where called for in the situation.
If those were properly done, the DM would ajudicate the chance for surprise more favorably.
The base chance for surprising an intended victim being 2 in 6 for the unsuspecting sort, as low as 1 in 20 for someone on guard.

Modifiers are many and rather self-evident, but most apply only in the context of a planned assassinationas noted above.
Of course, if the assassin is normally around the intended victim, that gives a bonus to surprise chance, and a greater one if the assassin is a trusted person.

The attack roll might be a check for successfully insinuation of poison into the victim's food or drink, slipping a deadly scorpion into the subject's boot or bed, etc.

The straight d% chance roll is meant mainly for the assassin striking by surprise in chance meeting of the intended victim.

Writing rules for roleplay was something that just wasn't done at the time the DMG was published.
Frankly, I fondly assumed that sort of thing would be understood by the readers...

Quote:
Thanks very much,
Rick, who feels like a giant fan boy 
 


Welcome, and what sort of giant

Cheers,
Gary


II. ATTACK MATRIX FOR MONSTERS (Including Goblins, Hobgoblins, Kobolds, and Orcs)
Hit Dice 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10
up to 1-1 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25* 26*
1-1 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24* 25*
1 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23* 24*
1+ 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21* 22* 23*
2-3+ 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20* 21*
4-5+ 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20* 20* 20*
6-7+ 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20* 20*
8-9+ 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20* 20*
10-11+ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
12-13+ -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
14-15+ -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
16+ -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Note: Any plus above +3 equals another hit die; i.e. 6+6 equals 7 hit dice.

<* Natural 20 required, at least.>

Missiles: -5 at long range, -2 at medium range.

CREATURES STRUCK ONLY BY MAGIC WEAPONS
Despite special defenses which protect certain creatures from attacks by
non-magical weapons, these monsters can be effectively hit by attackers
as follows:

                                                                 Attacker Must Have The Following
Defender Is Hit By Weapon  Hit Only By OR Hit Dice Of *
+1 or better +1 or better - 4 + 1 or more
+2 or better +2 or better - 6 + 2 or more
+3 or better +3 or better - 8 + 3 or more
+4 or better +4 or better - 10 + 4 or more

* This does not apply to characters of any sort.

This provides for magical properties and sizes of the attacking monster.
Thus, massive hill giants can effectively attack most creatures, and all
other types of giants can affect everything save a few gods.
 

Q: Will ?to hit? bonuses from
strength or weapon specialization
allow a character to hit monsters
that are hit only by silver, iron, or
magical weapons?

A: Nonmagical bonuses of any sort never
allow a character to harm a creature
which is harmed only by magical or special
weapons.
(139.67)

III. MATRIX FOR CLERICS AFFECTING UNDEAD, et al.
Level of Cleric Skeleton Zombie Ghoul Shadow Wight Ghast Wraith Mummya Spectreb Vampirec Ghostd Liche Special**f
1 10 13 16 19 20 - - - - - - - -
2 7 10 13 16 19 20 - - - - - - -
3 4 7 10 13 16 19 20 - - - - - -
4 T T 4 7 10 13 16 20 - - - - -
5 T T T 4 7 10 13 16 20 - - - -
6 D D T T 4 7 10 13 16 20 - - -
7 D D D T T 4 7 10 13 16 20 - -
8 D* D D D T T 4 7 10 13 16 19 20
9-13 D* D* D D D T T 4 7 10 13 16 19
14+ D* D* D* D* D D D T T 4 7 10 13

* Number affected is 7-12 rather than 1-12.

** Evil creatures from lower planes such as minor demons, lesser devils, mezzodaemons, night hags, from 1-2 in number.
(As a rule of thumb, any creature with armor class of -5 or better, 11 or more hit dice, or 66%
or greater magic resistance will be unaffected.)

a A paladin of 1st or 2nd level can be turned by an evil cleric.
b A paladin of 3rd or 4th level can be turned by an evil cleric.
c A paladin of 5th or 6th level can be turned by an evil cleric.
d A paladin of 7th ar 8th level can be turned by an evil cleric.
e A paladin of 9th or 10th level can be turned by an evil cleric.
f A paladin of 11 th or higher level can be turned by an evil cleric.
 

Question: Can evil Clerics turn good creatures such as Lammasu and Shedu?

Answer: According to page 66 of the DMG,
“ . . . A Cleric of the opposite alignment may attempt to negate the
effects of a Cleric who has affected undead or other creatures.” This
would seem to indicate that such turning or control is possible, but as
with a paladin’s being turned, it should only happen between chaotic
evils and lawful goods and chances of success should be roughly
equivalent to the paladin turning system. — JW

Procedure: A d20 is rolled,
and if the number shown is matched or exceeded by the die roll the undead are turned.
From 1-12 (or 7-12 or 1-2) undead (or evil creatures from lower planes) are affected:

1. Evil clerics cause the creatures to take neutral or friendly attitude according to a reaction dice score.
    Neutral undead will ignore the cleric and his or her party; friendly ones will follow the cleric and join the adventure.

2. Good clerics cause the creature to move directly away from his or her person,
    and stay as far away as possible for not less than 3 nor more than 12 rounds,
    moving at full speed for the duration if at all possible.
    The turned undead will be able to come back again, but they are subject to further turning by the cleric.

Failure to scare the number shown, or greater, means the turning was unsuccessful.
No further attempt by the cleric can be made with respect to the particular undead,
and they may proceed to attack or otherwise operate unconstrained.

T: This symbol indicates automatic turning - whether to influence by an evil cleric or actual driving away by a good cleric.

D: This symbol indicates the cleric has automatically brought the undead into friendly status (evil cleric) or destroyed or damned them (good cleric).

-: No effect upon the undead is possible where a dash is shown.

The progression on the table is not even.
A variable increment of 5% appears - 19, 20.
It is included to reflect two things.
First, it appears to allow lower level clerics a chance to turn some of the tougher monsters.
It disappears (at 4th level) and reappears again only when the clerics have reached a high level (8th and up).
This reflects the relative difficulty of these clerics when faced with turning away the worst of evil creatures,
but also allows the table to have them completely destroy the weaker undead.
If for some reason you must have an exact progression,
follow the columns for levels 1, 2, and 3, correcting to the right from there --
and thus rather severely penalizing the clerics of upper levels,
but by no means harming play balance.
[Row] 4 will then read, top to bottom: T, 4,7, 10, 13, 16, 19, 20.
Do not otherwise alter the table as it could prove to be a serious factor in balance -- weakening or strengthening clerics too greatly.

<? color the asterisks on the natural 20s?>
<there should be a consistent notation for THACO.
THACO20(n-2)?
n = the first natural 20 on the tables
-2 = the first natural 20, in this example, hits a -2>
 


orgcandman wrote:
3) Why weren't any combat rules, saves, to-hit, etc.. included in the player's handbook?

-Aaron
 


3) Players should be concentrating on enacting the role of their in-game persona.
not looking at charts and tables to study probabilities.
The game form is about that, not combat simulation 

Cheers,
Gary
 


The AD&D combat system came from OD&D, and OD&D came from the original Chainmail medieval military miniatures rules.
The armor protection system in the latter rules was progressively higher the better the armor, so the current D20 approach is not a new concept.

For the rest, I do believe that using THAC0 was as complicated as the to hit system in D20, so it is more a matter of personal preference that not in my thinking.
I can use either method, but I rather like t6he old one better, as I do the old saving throw tables.

Cheers,
Gary


<1: Linking to the combat tables>
<2: THACO#(#n#) see the THACO note.
for example (theoretical) THACO  20n = a 0-level human needs a Natural 20 (20n) to hit an AC0 opponent.
For more difficult opponents, follow the link.
Some kind of a format should be established.>
<3: ok, this should be done for all npc clerics, assasins, characters>