You are standing in a room in a dungeon with two doors that are on the opposite sides of the room. The doors are made of glass. You can see that behind both doors, there are corridors which turn after about 20 meters, so you don't directly visually see where exactly they lead to. But you know that one of the doors leads out, and one leads deeper into the dungeon. But there is an inscription on one of the doors, saying "↑ TIX∃". The second door is without any inscription. Which door should your choose to get out?

Phi-4 Multimodal

Vote: Door with inscription

The inscription "↑ TIX∃" on one of the doors appears to be a cryptic hint, which could suggest a path or direction that might not lead straight to the outside. Assuming that establishing a correct interpretation of this inscription may lead to a pathway out, it would be prudent to choose the door with the inscription and attempt to decipher the clue.

Nemotron Nano 12B

Vote: Door without inscription

The inscription '↑ TIX∃' contains symbols that may represent a coded or cryptic message. '↑' often implies upward movement, which might suggest it leads to another upper part of the dungeon, not freedom. 'TIX∃' is ambiguous but could be a red herring, possibly a hidden threat or trap. Rational explorers often advise distrusting riddles created by dungeon-objects. The other door, lacking any inscription, is the safer bet to escape since it presents no verbal trick or potential illusion.

Llama 3.3 70B

Vote: Door without inscription

The inscription '↑ TIX∃' seems cryptic and may indicate a trap or a puzzle, which is often associated with doors leading deeper into a dungeon. The absence of an inscription on the second door suggests it might be the more straightforward choice, potentially leading out. Given the information, choosing the door without an inscription appears to be the safer and more logical choice for escape.

GPT-5.4

Vote: Door with inscription

The inscription "↑ TIX∃" is a visual clue that reads like a reversed/mirrored version of "EXIT" with an arrow pointing up. That strongly suggests the marked door is the exit door. Since one door leads out and the other deeper into the dungeon, the inscription is almost certainly intended to identify the way out. Therefore, choose the door with the inscription.

Qwen 3 235B

Vote: Door without inscription

The presence of an inscription on one door is suspicious. In many puzzle scenarios, inscriptions or apparent clues are designed to mislead. The cryptic symbols "↑ TIX∃" do not form a meaningful message and may be intended as a red herring to provoke overthinking.

Qwen 3 Coder 480B

Vote: Door with inscription

The inscription '↑ TIX∃' contains meaningful symbols that provide a clue about the door's purpose. The upward arrow (↑) strongly suggests 'up' or 'exit,' which aligns with escaping the dungeon. In contrast, the door without any inscription provides no information whatsoever, leaving us with pure uncertainty. While 'TIX∃' is cryptic, the presence of the upward arrow makes this door significantly more likely to lead to freedom than the blank door.

GPT-OSS 120B

Vote: Door with inscription

The inscription "↑ TIX∃" is a visual clue. The symbol ∃ resembles a backwards E, and the letters TIX are the reverse of the word "XIT". When read upside‑down, "TIX∃" becomes "EXIT". The upward arrow reinforces the idea of "going up" or "getting out". Therefore the door bearing this hint is likely the one that leads out of the dungeon. The unmarked door provides no information, so the safest bet is to follow the explicit sign pointing to an exit.

Claude Haiku 4.5

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be deliberately constructed as a clue. The upward arrow (↑) suggests 'up' or 'out', which would indicate the direction of escape. The presence of an inscription at all suggests intentional marking—likely by previous dungeon explorers or the dungeon's creator to mark the exit. A door without any marking in a dungeon scenario is more likely to be a trap or deliberately left unmarked to deceive. The inscribed door shows evidence of deliberate communication, which makes it the more trustworthy choice for finding the way out.

Nova Pro

Vote: Door without inscription

The presence of an inscription on one door suggests it might be a trap or a misdirection. Dungeons often use such markings to mislead. The door without inscription appears more straightforward and less tampered with, making it the safer choice to exit the dungeon.

Mistral Large 3

Vote: Door with inscription

The inscription "↑ TIX∃" appears to be a deliberate message rather than random characters. Breaking it down: 1. The upward arrow (↑) is a universal symbol for 'exit' or 'upward to the surface.' This strongly suggests an intention to indicate the correct path. 2. The remaining characters may seem cryptic, but they can be interpreted logically: - 'TIX' could be an abbreviation for 'The Exit.' - The symbol '∃' is a logical notation for 'there exists.' Together, this could be read as 'There exists an exit.' Given that one door is marked and the other is not, the inscription is likely a clue left to guide escapees. The absence of an inscription on the other door offers no information and could imply deception or indifference. Additionally, the presence of a symbol suggests that someone (perhaps a previous prisoner) intended to help others escape. This aligns with choosing the marked door for safety.

Mistral Small

Vote: Door with inscription

The inscription '↑ TIX∃' is likely a cryptic clue or an anagram. Breaking it down: 1. '↑' (up arrow) suggests direction or elevation, which could metaphorically imply 'out' or 'upward' (i.e., escape). 2. 'TIX∃' resembles 'TIXES' or 'TIX ∃' (where '∃' is the mathematical symbol for 'there exists'). If we interpret 'TIX' as 'ticks' (as in time passing) or 'tix' (slang for tickets), it might hint at a path that 'exists' or is 'available' for escape. 3. Alternatively, 'TIX∃' could be a playful rearrangement of 'EXIT' (e.g., 'TIX' is close to 'EXIT' phonetically or visually, and '∃' could imply 'exists'). Given the context of a dungeon with one door leading out and one deeper in, the inscription is likely a hint pointing to the door that leads out. The lack of inscription on the other door offers no guidance, making it a riskier choice. Therefore, the door with the inscription is the more logical choice to maximize the chance of escape.

Gemini 3.1 Flash Lite

Vote: Door with inscription

The inscription "↑ TIX∃" is a mirrored version of the word "EXIT ↑". When viewed from the perspective of someone standing inside the room, the text appears reversed because it is written on the glass to be read from the outside—the exit side. Therefore, the presence of the sign indicates that the intended direction for those exiting the dungeon is through that specific door. The door without an inscription does not provide this navigational cue, making the inscribed door the logical choice.

GPT-4o

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be a code or riddle. Considering that the '↑' symbol might imply 'up' or 'exit', and the existence of an inscription might suggest it is a clue or hint towards the correct direction, it leans towards being a sign for the exit. The inscription also contains '∃', which could stand for 'exists', potentially hinting at the existence of an exit, contrary to the absence of a mark on the other door. In scenarios where only one door is marked, the marked one often provides vital information, suggesting that taking this door is a more calculated choice.

Arcee Trinity Large

Vote: Door with inscription

The inscription "↑ TIX∃" appears to be a coded message or puzzle. The upward arrow (↑) could indicate a positive direction or exit. The symbols TIX∃ might be an anagram or code - rearranged, they could spell "EXIT" with the upward arrow suggesting this is the way out. Additionally, the presence of an inscription itself is often a clue in such puzzles - the door with the inscription is frequently the correct choice in riddle scenarios. The door without inscription being unmarked could be a deliberate red herring to make the choice more difficult.

Mistral Large

Vote: Door with inscription

The inscription '↑ TIX∃' can be interpreted as a clue. '↑' could indicate 'up' or 'out', and 'TIX∃' is a play on the word 'EXIT' with mathematical symbols. It suggests that the door with the inscription leads out of the dungeon. Additionally, in escape scenarios, marked paths are often the correct ones, as they provide a hint to the solver. Therefore, choosing the door with the inscription is the more logical choice based on the given information.

GPT-5.2

Vote: Door with inscription

The inscription “↑ TIX∃” is a clue meant to be interpreted. If you imagine looking at it from the other side of the glass (i.e., reversed/mirrored), “TIX∃” reads as “EXIT” (with ∃ being a stylized/backwards E), and the arrow indicates the direction. So the door with the inscription is signaling “EXIT”, meaning it leads out.

DeepSeek V3.1

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be a puzzle or code. If we interpret it as text, '↑' might mean 'up' or indicate direction, while 'TIX∃' could be a reversed or altered word. Reversing 'TIX∃' gives '∃XIT', which resembles 'EXIT' when considering that '∃' is often used in logic to mean 'there exists', and 'XIT' is a common abbreviation or stylization for 'exit'. Thus, '↑ TIX∃' may be intended to mean 'up exit' or simply 'exit', suggesting this door leads out. Moreover, the presence of an inscription on one door and not the other implies it is a clue rather than a distraction. In dungeon puzzles, inscriptions often guide the way rather than mislead, especially if they are cryptic but decipherable. Therefore, choosing the door with the inscription is the logical choice to escape the dungeon.

Grok 3

Vote: Door with inscription

I vote for the door with the inscription, labeled as option A. The inscription '↑ TIX∃' appears to be a cryptic clue, and interpreting it could guide us to the correct path out of the dungeon. The '↑' symbol clearly represents an upward direction, which often symbolizes ascent or escape, fitting the goal of getting out of a dungeon. The term 'TIX∃' is less straightforward, but 'TIX' could be interpreted as 'ticks' or a reference to time, and '∃' is a mathematical symbol for 'there exists.' Together, this might suggest that there exists a way out by going up, reinforcing the idea that this door leads to freedom. In contrast, the door without an inscription (option B) offers no clues or hints, making it a riskier choice. In puzzles like this, inscriptions are often intentional and meant to guide the decision, so I believe the inscribed door is the safer bet to lead out of the dungeon.

MiniMax M2.1

Vote: Door with inscription

The inscription "↑ TIX∃" contains meaningful symbolic language. The upward arrow (↑) strongly suggests escape or going upward/outward. The symbol ∃ is the existential quantifier in formal logic, meaning "there exists" - often used in puzzles to indicate "there exists an exit." Combined, they suggest "upward/there exists a way out." In dungeon puzzle conventions, deliberate inscriptions are typically intentional clues, while blank doors are simply unmarked. The inscribed door provides specific directional information suggesting an exit path, while the blank door offers no guidance. When one option contains purposeful information and the other is empty, the informative choice is logically superior for finding an exit.

GPT-5.4

Vote: Door with inscription

The inscription is the key. "↑ TIX∃" looks odd until you imagine viewing it from the opposite side of a glass door. Because the doors are glass, writing on one side can be intended to be read from the other side. Reversed, "↑ TIX∃" reads like "EXIT" with an arrow. That strongly suggests the marked door is the exit door, and the message is meant for someone approaching from the corridor side. So the best choice is the door with the inscription.

GPT-4.1

Vote: Door with inscription

The inscription '↑ TIX∃' is suspicious and looks like it could be a clue. If we reverse 'TIX∃', it resembles 'EXIT' with a backwards 'E' (the '∃' symbol in logic means 'there exists,' but visually it can look like a flipped 'E'). The upward arrow (↑) could further signal 'up' or 'out,' supporting the idea that this marks the exit. The other door has no information at all. Since exit doors sometimes are labeled to help people escape, the presence of a cryptic but decipherable 'EXIT' clue is a strong reason to choose the door with the inscription.

GLM 4.5 Air

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be a puzzle clue. The upward arrow (↑) typically indicates direction or out. The 'TIX' can be rearranged to form 'EXIT' without the 'E'. The existential quantifier symbol (∃) means 'there exists' in logic. Combined, this appears to spell out 'There exists an exit' behind this door. In puzzle scenarios like this, information in inscriptions is typically relevant to solving the puzzle, making this the logical choice for the exit door.

O4 Mini

Vote: Door with inscription

The inscription “↑ TIX∃” is a code that only makes sense when inverted. The upward arrow indicates you should flip it upside-down (i.e., rotate 180° around a horizontal axis). When flipped, “TIX∃” becomes “∃XIT”. The mirrored “∃” looks like an “E”, yielding the word “EXIT”. Therefore the door with the inscription is clearly marked as the exit.

GLM 5

Vote: Door with inscription

The inscription "↑ TIX∃" is a puzzle that needs to be decoded. When you read "TIX∃" backwards, it becomes "∃XIT". The symbol ∃ (the existential quantifier "there exists") closely resembles the letter "E" when viewed this way. So "∃XIT" reads as "EXIT". Combined with the upward arrow ↑, the inscription is telling you that this door leads to the EXIT - meaning it leads out of the dungeon. The puzzle inscription is meant to guide escapees who can decode it, while remaining cryptic to those who might be trapped deeper. Therefore, the door with the inscription is the correct choice to escape the dungeon.

DeepSeek V3.2

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be a coded clue. The up arrow (↑) often symbolizes reversal or looking upwards in puzzles. Reversing the string 'TIX∃' gives '∃XIT'. Interpreting the symbol '∃' as a stylized 'E', common in logic or puzzles, this becomes 'EXIT'. Thus, the door with the inscription likely indicates the way out of the dungeon, making it the correct choice to escape.

Claude Opus 4.6

Vote: Door with inscription

The inscription on the door reads "↑ TIX∃". If you consider that this is written on a glass door and you're reading it from the inside of the room, the text would appear reversed/mirrored to someone reading it from the other side. If you mirror "TIX∃" horizontally, the ∃ becomes an E, the X stays as X, the I stays as I, and the T stays as T — giving you "EXIT". The ↑ arrow further reinforces that this is pointing to the way out. So the inscription, when read correctly (as it would appear from the other side of the glass door, i.e., from the corridor/exit side), says "EXIT ↑". This is a standard exit sign that someone placed on the door from the outside to guide people out. Since the doors are made of glass, you're seeing the EXIT sign in mirror image from your side. This strongly indicates that the door with the inscription is the one that leads out of the dungeon.

Gemini 3 Flash

Vote: Door with inscription

The inscription "↑ TIX∃" is a mirror image of "EXIT ↑". Because the doors are made of glass, a sign written on one side will appear reversed when viewed from the other side. In the context of a dungeon, an "EXIT" sign—even if viewed from the back—clearly identifies the path leading out. The presence of the arrow pointing forward (up) combined with the word for exit is a deliberate guide. The fact that it is mirrored simply confirms the physical properties of the glass door mentioned in the prompt. Choosing the door with the inscription is a logical choice because it provides specific information about the destination, whereas the door without any inscription offers no such assurance and is more likely to lead deeper into the dungeon.

O3

Vote: Door with inscription

The sequence “↑ TIX∃” looks meaningless until you remember you are viewing it through glass. If the word EXIT and an upward-pointing arrow were printed on the far side of the pane, you would see the text laterally reversed: E becomes the mirror symbol ∃, and the order of the letters appears flipped, giving T I X ∃. Thus “↑ TIX∃” is simply the mirror image of “EXIT ↑”. Since that label can only make sense if it was intended to be read correctly from the opposite (destination) side, the corridor behind that door is the path leading out. The unmarked door therefore heads deeper into the dungeon. Choose the door with the inscription.

Claude Opus 4.1

Vote: Door with inscription

The inscription '↑ TIX∃' appears to be 'EXIT ↑' written backwards or mirrored. When text is reversed like this, 'EXIT' becomes 'TIX∃' and the arrow pointing up (↑) suggests an upward direction, which typically means 'out' in dungeon contexts. Dungeons are traditionally underground structures, so exiting would involve going up toward the surface. The presence of any inscription at all suggests intentional marking - likely to help people navigate. The door without any inscription is unmarked, which in a dungeon setting often indicates the default path deeper into the structure. Important exits are usually marked in some way, even if cryptically. The backwards text could be a simple puzzle or security measure - making the exit findable for those who stop to think, while confusing hasty intruders. This is a common trope in dungeon design.

GPT-5 Mini

Vote: Door with inscription

Read the inscription right-to-left: TIX∃ reversed is ∃XIT. The symbol ∃ is just a backwards-looking E (and visually stands in for E), so ∃XIT -> EXIT. The arrow reinforces that this is pointing to the way out. The use of a backwards E makes sense on glass (it could be intended to be read from the other side or as a clever mirror-like clue). Therefore the door with the inscription is the exit; choose the door with the inscription.

Kimi K2.5

Vote: Door with inscription

The inscription "↑ TIX∃" is a visual cipher. Reading it from right to left, the symbol ∃ (the existential quantifier) resembles a backwards capital 'E'. This transforms "TIX∃" into "TIXE" reversed, which spells "EXIT". The upward arrow ↑ reinforces this interpretation, as "up" or "above" commonly signifies "out" in dungeon contexts. Therefore, the marked door explicitly indicates it leads to the exit. The unmarked door offers no information, and in a binary choice where one path leads deeper into danger and one leads to safety, the door bearing an intelligible exit sign—even an encoded one—is the rational choice. There is no indication that the inscription is a deception; it functions as a logical clue pointing to freedom.

Gemini 2.5 Pro

Vote: Door with inscription

The core of this puzzle lies in deciphering the inscription "↑ TIX∃". When read backwards, or as if reflected in the glass door, the inscription spells "EXIT ↑". The word "EXIT" is a direct instruction indicating the way out. The upward arrow (↑) further reinforces this meaning, as escaping a dungeon typically involves moving upwards and out. While one could speculate about this being a deceptive trap, there is no information in the problem to support that hypothesis. In the absence of any evidence of deceit (such as a lying guard or a contradictory clue), the most logical course of action is to follow the only piece of information provided. Choosing the unmarked door would be a complete guess, ignoring the clear signpost.

Gemini 3 Pro

Vote: Door without inscription

The inscription "↑ TIX∃" is the word "EXIT" seen backwards through the glass. This means the sign is written to be read correctly by someone standing on the other side of the door, in the corridor. If the word "EXIT" is directing people from that corridor into the room, it means that corridor leads deeper into the dungeon, and the room itself is a step closer to the surface. To continue heading out, you must follow the path of someone who just walked through that 'EXIT' door. Therefore, you should turn your back to the inscribed door and walk through the opposite door (the one without the inscription) to escape.

MiniMax M2.5

Vote: Door with inscription

The inscription "↑ TIX∃" provides the key clue. The upward arrow (↑) is a universal symbol pointing toward exit or surface direction - in a dungeon context, 'up' typically means toward the outside world, while deeper would be 'down'. The existential quantifier symbol (∃) means 'there exists', so the inscription could be read as 'there is an exit upward' or simply pointing to the way out. The unlabeled door offers no guidance whatsoever. Without any inscription, there's no information to help distinguish the exit from the deeper dungeon. The glass doors both show identical corridors that turn after 20 meters, so visual inspection provides no help. Given that one door must lead out while the other leads deeper, and the inscription explicitly uses an upward-pointing symbol paired with existential logic suggesting something exists in that direction, the logical choice is the door with the inscription.

Grok 4.1 Fast

Vote: Door with inscription

The inscription '↑ TIX∃' is a mirrored version of 'EXIT'. A left-right mirror image of 'EXIT' appears as 'TIX∃' because: - 'E' mirrors to '∃' (the existential quantifier symbol). - 'X', 'I', and 'T' are horizontally symmetric and unchanged. The '↑' arrow remains unchanged in a mirror. Since the doors are glass (transparent), this inscription was likely written as 'EXIT ↑' on the outside of the exit door. Viewed from inside, it appears mirrored as '↑ TIX∃'. The unmarked door has no such writing, confirming the inscribed door is the exit. Both corridors look identical (turning after 20m), so the inscription provides the clue.

Kimi K2 Thinking

Vote: Door with inscription

The inscription "↑ TIX∃" is a cipher for the word "EXIT". The symbol "∃" is the existential quantifier, which resembles a backwards "E". When read from right to left (as one might view text through a glass door or in a reflection), the sequence becomes "∃XIT↑", which decodes to "EXIT↑". The upward arrow (↑) further reinforces that this door leads upward and outward, as opposed to deeper into the dungeon. This is a classic puzzle design where a seemingly cryptic label actually provides the solution when decoded. Therefore, the door bearing the inscription is explicitly marked as the exit and should be chosen to escape the dungeon.

Gemini 3.1 Pro

Vote: Door without inscription

The inscription "↑ TIX∃" on the glass door is "EXIT ↑" seen backwards. Because the doors are made of glass, this tells us that the sign is meant to be read correctly from the other side of the door. An "EXIT" sign directs people toward the way out. If someone in the corridor on the other side of the inscribed door reads "EXIT ↑", it means they are being instructed to walk through that door and into your current room in order to escape. Since the people behind that door are heading towards your room to exit, the corridor behind the inscribed door must lead deeper into the dungeon. Therefore, to get out, you should head in the opposite direction and choose the door without the inscription.

Qwen 3.5 397B

Vote: Door with inscription

The inscription "↑ TIX∃" is a visual puzzle designed to spell out the word "EXIT". The symbol "∃" represents a backward "E", and reading the characters "TIX∃" from right to left reveals the word "EXIT". The upward arrow further suggests directionality towards the outside. In the context of a logic riddle, specific clues are rarely accidental decorations. A blank door offers no information to guide your decision, while the inscribed door provides a decipherable message indicating its function as the way out. Therefore, the door marked with the stylized exit sign is the most logical choice to escape the dungeon.

Final Summary

The AI Roundtable faced a classic spatial puzzle involving two glass doors and a cryptic, mirrored inscription. A landslide majority, led by Claude Opus 4.6 and GPT-5.4, correctly identified '↑ TIX∃' as the word 'EXIT' viewed from the reverse side of the glass, concluding it was a literal signpost to freedom. However, a clever minority led by Gemini 3.1 Pro and Gemini 3 Pro argued that if the sign is legible from the other side, it must be intended to lead people *into* the current room to find the exit, making the inscribed corridor the one leading deeper into the dungeon.

Models gave different answers, with a significant majority choosing the inscribed door.

Strongest Arguments

• Door with inscription: The inscription '↑ TIX∃' is a mirrored image of 'EXIT ↑' as seen through a glass door from the inside; the arrow and word explicitly designate the path out.
• Door without inscription: The sign is oriented to be read from the corridor side, meaning it directs people from that corridor *into* the room to find the exit, thus the corridor itself must lead deeper into the dungeon.