Difference between revisions of "1-turn ascension"

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A '''1-turn ascension''' is possible in [[wizard mode]]:
 
A '''1-turn ascension''' is possible in [[wizard mode]]:
  
−
# Level teleport ({{kbd|Ctrl|v}}) to the [[Plane of Earth]] - use {{kbd|?}} to see the menu and select the Plane of Earth ("-1" will not work), this will also automagically give you the Amulet of Yendor
+
# Level teleport ({{kbd|Ctrl|v}}) to the [[Plane of Earth]] – use {{kbd|?}} to see the menu and select the Plane of Earth ("-1" will not work), this will also automagically give you the Amulet of Yendor
 
# Level teleport to the [[Astral Plane]]
 
# Level teleport to the [[Astral Plane]]
 
# Wish for a (lawful/neutral/chaotic) altar
 
# Wish for a (lawful/neutral/chaotic) altar
Line 10: Line 10:
  
 
===Bug exploit===
 
===Bug exploit===
−
If you don't consider exploiting bugs to be cheating, the following procedure may allow an ascension on turn 1 in non-wizard mode:
+
If you don't consider exploiting bugs to be cheating, it is possible to achieve ascension on turn 1 in non-wizard mode.
  
−
# Play until you have the following:
+
The bug is [[integer overflow]] of the turn counter.
−
#* any means of creating a [[blue jelly]]
 
−
#* a [[ring of slow digestion]]
 
−
#* [[teleportitis]]
 
−
#* [[teleport control]]
 
−
#* '''NO''' cold resistance
 
−
#* (optional, will make the setup faster) [[regeneration]]
 
−
#* anything else you need to ascend
 
−
# Double-check you are not [[crowned]], your god is not [[anger|angry]], and your [[experience level]] is at most 17.
 
−
# Go to a reasonably safe level. Any will do, but it is faster with a smaller level.
 
−
# Also, your experience level plus the dungeon level must be less than 20, to prevent creation of [[earth elemental]]s.
 
−
# Create the monster using previously prepared method.
 
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# Wield a weak weapon and divide the monster, carefully watching your HP.
 
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# When another unwanted monster appears, teleport to it, kill/destroy it and teleport back.
 
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# Repeat until the whole level is filled with them.
 
−
## As an alternative method, drain yourself to level 1, go to Dlvl 1, [[extinct]] everything generated there (kill with pets or [[conflict]] to avoid gaining experience levels) or [[genocide]] them, leave pets on another level if you used them, and eliminate anything that remains (make sure you are still experience level 1!).
 
−
# Put on the [[ring of slow digestion]] while well-nourished, remove all other jewelry, and drop the [[Amulet of Yendor]]
 
  
−
Now write the following in a text editor:
+
This will take very much effort to do manually, so it should be done with a [[paste]]d sequence instead. Using one does not allow responding to most interferences; they must be prevented or dealt with predictably.
 +
 
 +
* [[Sounds]] could cause "--MORE--"; go to a dungeon level without anything that could cause them.
 +
* Attribute gains from [[exercise]] or [[abuse]] could interfere by causing "--MORE--". Wear a [[ring of sustain ability]] to prevent this.
 +
** Save and reload the game, then do not exercise anything for 850 turns or until you get such a gain, whichever comes first. Repeat this
 +
* [[Monster]]s could interfere in many ways. They can be removed, but normally, new ones will spontaneously appear.
 +
** One way to stop this is by occupying all spaces with [[sessile]] monsters.
 +
*** Create a [[blue jelly]] or [[brown mold]], or use a pre-existing one, and attack it without [[cold resistance]] using sonething weak, causing it to divide. Continue until all spaces are occupied. You should move and choose the one to attack to avoid having them surround you.
 +
*** Choosing a level with little space and having ways to recover from the damage the monsters do will make this faster.
 +
*** [[Phasing]]] monsters could appear in positions others cannot. The sum of your experience level and the dungeon level must be less than 20 so that they do not appear.
 +
** Another way is to [[genocide]] or make [[extinct]] every monster that can appear.
 +
*** Minimise your experience level and dungeon level to restrict the monsters that can appear.
 +
* Consumption of [[nutrition]] over time could also interfere.
 +
** Wear a [[ring of slow digestion]] to reduce it. Remove all other jewelry other than the aforementioned ring of sustain ability, because they increase it.
 +
** [[Prayer]] can be used to regain nutrition. For it to be completely reliable, you must not be [[crowned]], and your god must not be [[anger|angry]].
 +
 
 +
Write the following in a text editor:
  
 
99999.<ESC>99999.<ESC>#pray<CR>y<ESC>
 
99999.<ESC>99999.<ESC>#pray<CR>y<ESC>
 +
 +
If the "[[number pad]]" option is set to 1 or 2, [[Numeric prefix|add "n" before each "99999."]].
  
 
Be sure to replace <ESC> with an actual escape character, and <CR> with an actual carriage return. These can be inserted, for example, with [[vi]]'s Ctrl-V command.
 
Be sure to replace <ESC> with an actual escape character, and <CR> with an actual carriage return. These can be inserted, for example, with [[vi]]'s Ctrl-V command.
  
−
Duplicate this line about 238,600 times, copy it into your paste buffer, paste it into NetHack's terminal, and wait approximately 19 days. This will overflow the turn counter, wrap around to -2,147,483,648 and slowly creep back up to zero. Each pasted line passes 18000 turns, so you must calculate precisely how many lines must be pasted to bring the counter back up to the right amount. As it approaches a reasonable negative value that should give you enough time, prepare to ascend, then offer the amulet to your deity as the counter ticks over to 1.
+
Duplicate this line about 505,200 times, copy it into your paste buffer, paste it into NetHack's terminal, and wait approximately 19 days. This will overflow the turn counter, wrap around to -2,147,483,648 and slowly creep back up to zero. Each pasted line passes 8500 turns, so you must calculate precisely how many lines must be pasted to bring the counter back up to the right amount. As it approaches a reasonable negative value that should give you enough time, prepare to ascend, then offer the amulet to your deity as the counter ticks over to 1.  
−
 
 
−
The hungry and weak status messages will interrupt the waiting command. Filling all tiles makes sure spellcasters cannot be created, whose spells would interrupt you and make the prayer go off too soon. You really nead to wait until you are "weak" but not "fainting" 17999 turns later because "hungry" counts only as a minor problem, and your cursed ring of slow digestion would get improved instead of your hunger. The limit on experience levels is because at higher levels, you stand a minuscule chance of a gigantic prayer timeout. While irrelevant in normal games, probabilities do add up.
 
  
−
A variation is to do this in the [[Astral Plane]] [[sanctuary]]. The Wizard cannot appear on Astral, but scrolls of earth do not work there. You need to [[polymorph]] [[statue]]s to get boulders, and you can [[wand of undead turning|revive]] jelly corpses from under the boulders.
+
The hungry and weak status messages will interrupt the waiting command. You really need to wait until you are "weak" but not "fainting" 8499 turns later because "hungry" counts only as a minor problem, which will not always be solved by praying.
  
 
If NetHack is compiled for a 64-bit platform, the "long" type will not wrap around until it gets to 9,223,372,036,854,775,808. The above trick still works in principle, but will take a few hundred million years to complete.
 
If NetHack is compiled for a 64-bit platform, the "long" type will not wrap around until it gets to 9,223,372,036,854,775,808. The above trick still works in principle, but will take a few hundred million years to complete.

Revision as of 16:30, 12 October 2013

Wizard mode

A 1-turn ascension is possible in wizard mode:

  1. Level teleport (Ctrl + v) to the Plane of Earth – use ? to see the menu and select the Plane of Earth ("-1" will not work), this will also automagically give you the Amulet of Yendor
  2. Level teleport to the Astral Plane
  3. Wish for a (lawful/neutral/chaotic) altar
  4. #offer the Amulet

Although this is four steps, none of them consume turns in wizard mode. Players hoping to save themselves tremendous amounts of embarrassment should refrain from claiming this as a real ascension.

Bug exploit

If you don't consider exploiting bugs to be cheating, it is possible to achieve ascension on turn 1 in non-wizard mode.

The bug is integer overflow of the turn counter.

This will take very much effort to do manually, so it should be done with a pasted sequence instead. Using one does not allow responding to most interferences; they must be prevented or dealt with predictably.

  • Sounds could cause "--MORE--"; go to a dungeon level without anything that could cause them.
  • Attribute gains from exercise or abuse could interfere by causing "--MORE--". Wear a ring of sustain ability to prevent this.
    • Save and reload the game, then do not exercise anything for 850 turns or until you get such a gain, whichever comes first. Repeat this
  • Monsters could interfere in many ways. They can be removed, but normally, new ones will spontaneously appear.
    • One way to stop this is by occupying all spaces with sessile monsters.
      • Create a blue jelly or brown mold, or use a pre-existing one, and attack it without cold resistance using sonething weak, causing it to divide. Continue until all spaces are occupied. You should move and choose the one to attack to avoid having them surround you.
      • Choosing a level with little space and having ways to recover from the damage the monsters do will make this faster.
      • Phasing] monsters could appear in positions others cannot. The sum of your experience level and the dungeon level must be less than 20 so that they do not appear.
    • Another way is to genocide or make extinct every monster that can appear.
      • Minimise your experience level and dungeon level to restrict the monsters that can appear.
  • Consumption of nutrition over time could also interfere.
    • Wear a ring of slow digestion to reduce it. Remove all other jewelry other than the aforementioned ring of sustain ability, because they increase it.
    • Prayer can be used to regain nutrition. For it to be completely reliable, you must not be crowned, and your god must not be angry.

Write the following in a text editor:

99999.<ESC>99999.<ESC>#pray<CR>y<ESC>

If the "number pad" option is set to 1 or 2, add "n" before each "99999.".

Be sure to replace <ESC> with an actual escape character, and <CR> with an actual carriage return. These can be inserted, for example, with vi's Ctrl-V command.

Duplicate this line about 505,200 times, copy it into your paste buffer, paste it into NetHack's terminal, and wait approximately 19 days. This will overflow the turn counter, wrap around to -2,147,483,648 and slowly creep back up to zero. Each pasted line passes 8500 turns, so you must calculate precisely how many lines must be pasted to bring the counter back up to the right amount. As it approaches a reasonable negative value that should give you enough time, prepare to ascend, then offer the amulet to your deity as the counter ticks over to 1.

The hungry and weak status messages will interrupt the waiting command. You really need to wait until you are "weak" but not "fainting" 8499 turns later because "hungry" counts only as a minor problem, which will not always be solved by praying.

If NetHack is compiled for a 64-bit platform, the "long" type will not wrap around until it gets to 9,223,372,036,854,775,808. The above trick still works in principle, but will take a few hundred million years to complete.

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