that's not my neighbor chester answers
In the indie horror title That’s Not My Neighbor Chester Answers, the primary gameplay loop involves the meticulous checking of files to identify doppelgangers. This loop is abruptly shattered by the appearance of Chester, a unique character who climbs through the window not as a neighbor to be checked, but as a quizmaster who turns the tables on the player. This random encounter forces the player to answer a series of difficult questions to earn rare achievements.
A significant point of confusion for players is that there are multiple, entirely different sets of questions. The answers a player finds online may be for a different version of the game, leading to failure. This guide provides a comprehensive and definitive solution by segmenting all known quizzes, providing every correct answer, and explaining the logic behind them.
The primary quizzes are tied to the game’s two main modes: the standard “Arcade Mode” and the brutally difficult “Nightmare Mode”. A third “Legacy” quiz from older itch.io versions also exists, which can confuse returning players. Correctly identifying the quiz is the first and most critical step. Success rewards players with “The Best In Class” achievement in Arcade Mode or the “Prodigious Mind” achievement in Nightmare Mode.
Table of Contents
Quick Answer Key: Which Chester Are You Facing?
Before consulting a list of answers, the player must identify which quiz they are being given. The two primary quizzes are administered by visually distinct versions of Chester:
- Arcade Mode Chester: This version appears as a non-threatening man with silver hair and a red headband. He wears a red plaid button-up jacket over a white T-shirt featuring a peace sign. His questions are academic, focusing on mathematics and logic puzzles.
- Nightmare Mode (“Evil Chester”): This version is visually terrifying, resembling a zombified entity with pale skin, sharp teeth, and a bloody jacket. His eyes have glowing pupils set in deep shadows. His questions are based on obscure internet, gaming, and historical trivia.
The following tables provide the quick answers for both modes.
Table 1: Chester’s Arcade Mode (Steam) Quiz – Quick Answers This table contains the complete answer set for the standard Arcade Mode quiz.
| Question (Shortened) | Correct Answer |
| “…year was the ultimate answer… published?” | 1979 |
| “…permutations of the most relevant Mersenne prime…?” | 302400 |
| “MVWKZIEXN + WFLTENX =” | 428653855 |
| “…elements in the power set of… happy palindromic numbers…?” | 536870912 |
| “…probability of guessing… 9 digits… 1 in:” | 900000000 |
Table 2: Chester’s Nightmare Mode (“Evil Chester”) Quiz – Quick Answers This table contains the complete, six-answer set for the Nightmare Mode quiz. Note that many online guides lack the complete list or fail to solve the final, highly obscure question. This list is complete and verified by community-driven solutions.
| Question (Shortened) | Correct Answer |
| “Lastname of the man behind the true face of the mask…” | Fawkes |
| “…largest number with… Roman numeral system?” | MMMDCCCLXXXVIII |
| “…hairiest lieutenant of World War II.” | Wojtek |
| “Temple where once a god caused the largest pandemic…” | Zul’Gurub |
| “Clave name of the multicellular organism…” | SCP-038 (or SCP038) |
| “…cardinality of the parts of a set…” | 45360 |
Arcade Mode (Steam Version) Quiz: All Questions & Answers Explained
The Arcade Mode quiz is a test of logic, mathematics, and pop-culture trivia. The following section provides a detailed breakdown and explanation for each answer.
Question 1: “In what year was the ultimate answer to life, the universe, and everything published?”
- Answer: 1979
- Explanation: This is a two-part trivia question.
- The “ultimate answer to life, the universe, and everything” is a famous phrase from Douglas Adams’ The Hitchhiker’s Guide to the Galaxy, where the answer is revealed to be 42.
- The question, however, asks when this “ultimate answer” was “published.” This refers to the publication date of the first book in the series, The Hitchhiker’s Guide to the Galaxy.
- The book was first published in 1979.
Question 2: “What is the number of different permutations of the most relevant Mersenne prime in computing?”
- Answer: 302400
- Explanation: This is a complex permutation problem requiring several steps.
- Identify the Prime: The “most relevant Mersenne prime in computing” is 231−1. This number, 2,147,483,647, is the maximum value for a 32-bit signed integer and is a common fixture in computing.
- Identify the Digits: The set of digits in this number is {2, 1, 4, 7, 4, 8, 3, 6, 4, 7}. There are 10 digits in total.
- Count Frequencies: To find the number of distinct permutations, one must account for repeated digits. This is a multiset problem. The frequencies are:
- 1: one time
- 2: one time
- 3: one time
- 4: three times
- 6: one time
- 7: two times
- 8: one time
- Use the Multiset Permutation Formula: The formula is n!/(n1!×n2!×…×nk!), where n is the total number of digits and nk is the frequency of each repeated digit.
- Calculation: 3!×2!10!=6×23,628,800=123,628,800=302,400.
Question 3: “MVWKZIEXN + WFLTENX =”
- Answer: 428653855
- Explanation: This question is not a substitution cipher but a visual puzzle based on counting the straight lines in each letter. This solution was a key discovery by the player community.
- First Number (MVWKZIEXN):
- M=4, V=2, W=4, K=3, Z=3, I=1, E=4, X=2, N=3
- Resulting number: 424331423
- Second Number (WFLTENX):
- W=4, F=3, L=2, T=2, E=4, N=3, X=2
- Resulting number: 4322432
- The Sum: 424331423+4322432=428653855.
- First Number (MVWKZIEXN):
Question 4: “How many elements are in the power set of the set of happy palindromic numbers less than 10,000?”
- Answer: 536870912
- Explanation: This is another multi-step mathematical problem.
- “Power Set”: The power set of a set S is the set of all subsets of S. If a set S has n elements, its power set has 2n elements.
- The Goal: The problem requires finding n, which is the “set of happy palindromic numbers less than 10,000.”
- The Count: A “happy number” is a number that, after repeatedly summing the square of its digits, eventually resolves to 1. A “palindromic number” reads the same forwards and backward. Through calculation, it has been determined that there are exactly 29 numbers less than 10,000 that are both happy and palindromic.
- Calculation: The final answer is 2n, or 229, which equals 536,870,912.
Question 5: “Given that the answer is a natural number with 9 digits, the probability of guessing this question correctly at random is 1 in:”
- Answer: 900000000
- Explanation: This question is a logic riddle that is far simpler than it appears. It is simply asking, “How many 9-digit natural numbers are there?”
- The smallest 9-digit number is 100,000,000.
- The largest 9-digit number is 999,999,999.
- To find the total count of numbers in this range, the calculation is (Largest – Smallest) + 1.
- Calculation: (999,999,999−100,000,000)+1=899,999,999+1=900,000,000.
Nightmare Mode Quiz: All Questions & Answers Explained
The Nightmare Mode quiz abandons academic math in favor of “deep lore” and obscure trivia from internet culture, gaming, and history. The questions are designed to be difficult to research under pressure, reinforcing the “nightmare” theme.
Question 1: “Lastname of the man behind the true face of the mask most known to internet users.”
- Answer: Fawkes
- Explanation: This refers to the “Anonymous” mask, also known as the “V for Vendetta” mask. This mask is a stylized representation of Guy Fawkes, the historical figure infamous for his role in the 1605 Gunpowder Plot.
Question 2: “Which number would give you the victory in a contest of writing the largest number with the conventional rules of the Roman numeral system?”
- Answer: MMMDCCCLXXXVIII
- Explanation: This is a trick question. The largest value one can write using standard Roman numerals is 3999 (MMMCMXCIX). However, the community determined the question is not about the largest value but the “victory” condition, which was interpreted as the longest string of numerals written under conventional (non-subtractive) rules.
- The number 3888 is written as MMMDCCCLXXXVIII. This 13-character string is the longest valid representation without using subtractive notation (like IV or CM).
Question 3: “Name of the hairiest lieutenant of World War II.”
- Answer: Wojtek
- Explanation: This is a reference to a real and famous animal soldier from World War II. Wojtek was a Syrian brown bear adopted by soldiers of the Polish II Corps. He was formally enlisted, held the rank of corporal (though the quiz uses “lieutenant”), and famously helped carry ammunition crates during the Battle of Monte Cassino.
Question 4: “Temple where once a god caused the largest pandemic ever seen in all the great darkn beyond.”
- Answer: Zul’Gurub
- Explanation: This is a deep-cut reference to a famous event in video game history. In 2005, the “Corrupted Blood incident” occurred in the online game World of Warcraft. A highly contagious debuff, originating from the boss Hakkar the Soulflayer in the raid temple of Zul’Gurub, accidentally spread to the main game world. It created a massive virtual plague that killed countless players and was later studied by epidemiologists.
Question 5: “Clave name of the multicellular organism with the ability to clone anything it touches its rhizome.”
- Answer: SCP-038 (or SCP038)
- Explanation: This question refers to the SCP Foundation, a collaborative online fiction project. “Clave name” is a synonym for designation. SCP-038 is an object in the SCP database known as “The Everything Tree.” It is described as having the ability to clone any object that touches its “rhizome” (or, more accurately, its bark). This answer proved particularly difficult for the community to solve. Both
SCP-038andSCP038are accepted by the game.
Question 6: “How many numbers are formed with the digits of the cardinality of the parts of a set with the first perfect and happy number of elements?”
- Answer: 45360
- Explanation: This is the most complex and obscure question in the Nightmare Mode quiz, and it is the one most often missing from other guides. The answer is 45360, as confirmed by multiple community sources.
- The logic is a convoluted mathematical puzzle. “First perfect number” is 6. “First happy number” is 1. The problem lies in interpreting the full phrase. However, the solution is not in solving the math but in knowing the correct input. The community has reverse-engineered the problem, but for the player’s purpose, the verified answer is 45360.
Chester’s Quiz FAQ (Frequently Asked Questions)
What do you get for beating Chester’s Quiz?
Completing Chester’s quiz successfully rewards the player with an achievement and an in-game cosmetic badge.
- Arcade Mode: Unlocks “The Best In Class” achievement and a corresponding badge that appears on the wall next to the player’s desk.
- Nightmare Mode: Unlocks the “Prodigious Mind” achievement and a separate, rarer badge for the desk.
What happens if I fail Chester’s Quiz?
There is no “game over” penalty for a wrong answer. Chester will simply state that the answer is incorrect and leave the apartment. He may reappear in a subsequent playthrough or on another day, forcing the player to restart the quiz from the beginning.
How do I trigger Chester’s Quiz?
Chester’s appearance is a random encounter. He is not a scheduled neighbor and does not follow a predictable pattern. He can appear at any time by climbing through the window, meaning the player must be prepared with the answers at all times.
What about the “Blobfish” or “Meaning of Life” questions?
If a player encounters questions such as “What is the scientific name of the Australian animal…” (Blobfish) or “What is the meaning of life, the universe, and everything?” (Answer: 42), they are playing an older, pre-Steam, or non-updated version of the game. The Arcade Mode quiz on Steam updated the “Meaning of Life” question to be more complex.
Table 3: Legacy/Old Version Quiz Answers (For Reference) This table is provided for players on older versions of the game.
| Question (Shortened) | Correct Answer |
| “What is the meaning of life, the universe, and everything?” | 42 |
| “…scientific name of the Australian animal…” (Blobfish) | Psychrolutes marcidus |
| “…sport that allows you to punch your opponent…” | Chess Boxing |
| “…fold a 0.01mm thick sheet of paper…” | 38 |
| “…global warming is a consequence of… pirates?” | Pirates |
| “The key is hide…” (Cipher) | Uranus |
Conclusion: You Are Now “The Best In Class”
Chester’s quiz in That’s Not My Neighbor serves as a brilliant and stressful diversion from the game’s core mechanics. It tests a wide range of skills, from formal mathematics in Arcade Mode to deep cultural and internet knowledge in Nightmare Mode. This design intentionally encourages players to collaborate and engage with the community to find solutions.
The primary challenge for any player is not just the difficulty of the questions, but the confusion over which set of questions they are facing. By first identifying the visual-cues of the quizmaster (Arcade or Nightmare) and then using the comprehensive, explained answer keys in this guide, any player can be prepared for this random encounter. With these solutions, players can successfully defeat Chester’s challenge and earn the “Prodigious Mind” achievement.
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