# Fire resistance
Fire resistance is a property in NetHack that protects you against most sources of fire damage.

Contents

1 Description
2 Sources

2.1 Intrinsic
2.2 Extrinsic

3 Strategy
4 History
5 Messages
6 Variants

6.1 SLASH'EM
6.2 FIQHack
6.3 dNetHack
6.4 SlashTHEM
6.5 EvilHack

7 References

Description
Fire resistance nullifies any fire damage that you take from monster attacks and wands, but will not prevent fire damage from boiling potions or burning scrolls and spellbooks, nor will it prevent burning of non-fireproof armor. Falling in lava with fire resistance still incurs damage but prevents it from being immediately lethal, providing a limited amount of turns for you to escape it before you sink beneath its surface. Being splashed from a boulder falling into lava deals d6 damage if you have fire resistance (before half physical damage is applied) and 3d6 damage otherwise.
Fire-element monsters, some golems and most major demons are among the monsters that have fire resistance. Monsters that are resistant to fire but not to cold are considered vulnerable to cold, and take about 57% more damage from rays of cold (+1d3 for each 1d6) as well as double damage from frosty explosions.[1][2] This is not applied to you, even while polymorphed into such a monster.

Sources
Intrinsic
Intrinsic fire resistance can be obtained by crowning like all other resistance properties. Monks gain intrinsic fire resistance at experience level 11, and Priests obtain fire resistance at XL 20.[3][4]
The intrinsic can also be gained by from polymorphing into the following monsters or eating their corpses or globs:

Monster
Conduct
Difficulty
Chance
Notes

red mold
vegan
2
3%

gray ooze
vegetarian
4
7%
acidic

gelatinous cube
vegan
6
10%
acidic

red naga hatchling
meaty
4
10%

flesh golem
meaty
10
12%

Chromatic Dragon
meaty
23
17%
poisonous, Caveman quest nemesis, nopoly

fire ant
meaty
6
20%
abundant on the Valkyrie quest

pyrolisk
meaty
8
20%

red naga
meaty
8
20%

Wizard of Yendor
meaty
34
25%
cannibalism for humans, nopoly

fire giant
meaty
11
30%
abundant on the Valkyrie quest

hell hound pup
meaty
9
47%

Lord Surtur
meaty
19
50%
Valkyrie quest nemesis, nopoly

salamander
meaty
12
53%
poisonous

hell hound
meaty
14
80%

red dragon
meaty
20
100%

Ixoth
meaty
22
100%
Knight quest nemesis, nopoly

Eating a ring of fire resistance also has a chance to convey the intrinsic.

Extrinsic
Extrinsic fire resistance is granted by the following items:

Wearing a ring of fire resistance
Wearing red dragon scales or scale mail
Wielding Fire Brand
Carrying the Mitre of Holiness, the Priest quest artifact
Strategy
Fire resistance is a must-have before hitting Gehennom, as fire traps are prevalent there and capable of reducing your maximum hit points otherwise.

History
Fire resistance as a property has existed since the many variants of Jay Fenlason's Hack. From Hack 1.02 to NetHack 3.0.10, fire resistance was required to enter Hell, which would instantly burn you to a crisp otherwise.

Messages
You feel a momentary chill.
You gained intrinsic fire resistance by eating a corpse or tin.
You be chillin'.
As above, while hallucinating.
You feel cool!
You gained intrinsic fire resistance through reaching a certain experience level.
You feel warmer!
You lost intrinsic fire resistance due to level drain or a gremlin attack.
You feel mildly warm.
You were hit by fire, but suffered no damage due to fire resistance.
Variants
Variants often introduce additional sources of fire resistance; object properties systems also have fire resistance as one of the many possible extrinsics that worn armor can convey.

SLASH'EM
In SLASH'EM, the Flame Mage role always starts with intrinsic fire resistance.
The ward against flame technique confers temporary fire resistance when used. This is the Monk's primary source of fire resistance, available at experience level 11, and was converted to intrinsic fire resistance when the role was ported to NetHack.

FIQHack
In FIQHack, extrinsic fire resistance prevents items you carry from burning as well.

dNetHack
In dNetHack, fire resistance gained from eating corpses is temporary, as with most other resistance properties; the duration depends on the corpse eaten.

SlashTHEM
In SlashTHEM, the fire helmet and asbestos jacket each provide fire resistance when worn. The Firefighter role starts with both of these items, and gains intrinsic fire resistance at experience level 15.
Trolls are a playable race in SlashTHEM who are uniquely incapable of obtaining fire resistance from any source at all, even including polymorphing.

EvilHack
In EvilHack, the Infidel role starts with intrinsic fire resistance.

References

↑ src/explode.c in NetHack 3.6.6, line 440

↑ src/zap.c in NetHack 3.6.6, line 3649

↑ attrib.c in NetHack 3.6.6, line 53

↑ attrib.c in NetHack 3.6.6, line 60