You are standing in a room in a bunker 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 bunker. But there is an inscription on one of the doors, saying "↑ TIX∃". The second door is without any inscription. Which door should you choose to get out of the bunker?

Claude Opus 4

Vote: With inscription

The inscription "↑ TIX∃" is clearly a transformed version of "EXIT ↑" — whether interpreted as a mirror reflection (viewed through glass from the other side) or rotated 180°, it decodes to "EXIT" with a directional arrow. This is not a coincidence: the letters E (∃), X, I, T are precisely the letters that appear in EXIT, and ∃ is the standard mirror/rotation of E. The probability that these specific symbols appear in this specific order by chance is essentially zero. The arguments from hermes-4-405b and trinity-large-thinking treat the inscription as cryptic or a red herring, but this ignores the clear decoding. There's no basis in the puzzle for assuming markings are deceptive — that's an unsupported genre assumption. The puzzle gives us one piece of actionable information, and it decodes unambiguously to EXIT. Gemma, Sonar, and GLM all independently recognized the EXIT decoding, which strengthens the case. Door A is the exit.

trinity-large-thinking (changed mind)

Vote: With inscription

Initially, I viewed the inscription as a red herring, favoring the unmarked door. However, Claude Opus 4's mirror interpretation is compelling: the inscription is designed to be read from the corridor side, indicating 'EXIT' with an upward arrow pointing outward. This aligns with standard exit signage logic, where signs face the direction people approach. The arrow reinforces the upward path to the surface. Therefore, the door with the inscription is the correct choice to exit the bunker.

hermes-4-405b (changed mind)

Vote: With inscription

I am changing my vote from B to A based on the compelling explanations from multiple other models, particularly those highlighting the reversed/mirrored nature of the inscription. The argument that '↑ TIX∃' is actually a reversed or upside-down 'EXIT' sign is very convincing. As [Claude Opus 4] pointed out, this suggests the sign is meant to be read from the other side of the glass door, meaning it would say 'EXIT ↑' (exit with an arrow pointing out) when approached from inside the bunker. Similarly, [GLM 5] explained that flipping the text 180 degrees reveals '↓ EXIT' (down exit), with the arrow also flipping from up to down. This double-meaning of the symbols makes the inception a strong indicator rather than a random red herring. The models also correctly note that in real-world scenarios, exit signs are typically placed to guide people toward the exit with the text facing the direction people read them from. Therefore, the door with the inscription is the one that leads out of the bunker, as the reversed text implies it's oriented to be read by someone in the corridor looking back (i.e., leaving).

Sonar Reasoning Pro

Vote: With inscription

I maintain my position on the inscribed door. While hermes-4-405b and trinity-large-thinking argue that cryptic markings are misleading or that standard exits are unmarked, they overlook the specific linguistic content of the inscription itself. Claude Opus 4, gemma-4-31b, and GLM 5 have convincingly demonstrated that '↑TIX∃' encodes 'EXIT' through multiple interpretive methods—mirror reading (∃ as reversed E), character rotation, and upside-down decoding. This is not arbitrary symbolism but definitive linguistic evidence that the inscribed door is explicitly marked as the exit. An exit sign would not be placed on a door leading deeper into a bunker. The inscription provides concrete proof that door A leads out.

gemma-4-31b

Vote: With inscription

The inscription "↑ TIX∃" is a clear riddle. When viewed as a mirror image (which is the most logical interpretation given that the doors are made of glass), the symbol "∃" becomes "E", and "TIX" reversed becomes "XIT", resulting in "EXIT ↑". The detail that the doors are glass is a critical hint, suggesting that the sign is intended to be read from the opposite side of the door. This means the sign is facing the corridor, guiding people coming from the outside back in, or simply placed on the outer surface of the glass. While some models argue that the inscription is a red herring or too cryptic, this is a puzzle; the presence of specific, unusual characters like the existential quantifier (∃) is a strong indicator that there is a solvable code. The mirroring theory is the most cohesive explanation that utilizes all the provided information.

GLM 5

Vote: With inscription

The inscription "↑ TIX∃" is a clever cipher that, when decoded, clearly identifies the exit door. Multiple valid decoding methods all point to the same answer. **Method 1 - 180° Rotation:** When you rotate the text upside-down, each character transforms: ↑→↓, T→T, I→I, X→X, ∃→E. Reading the rotated text gives "EXIT ↓" — this door is the exit. **Method 2 - Mirror Reading:** Reading the inscription as a mirror image, ∃ becomes E, and TIX reversed becomes XIT, yielding "↑ EXIT" — again indicating this is the exit. The arguments for choosing door B are unconvincing. The idea that marked doors are typically maintenance doors ignores that this is a puzzle scenario where clues are meant to be solved. The "red herring" argument is equally weak — puzzles reward interpretation, not clue-avoidance. If the inscription were meaningless, it would be poor puzzle design; the fact that it decodes perfectly to "EXIT" confirms it's the intended solution. The door with the inscription leads out of the bunker.

Final Summary

The AI Roundtable initially faced a divide over whether to trust a cryptic inscription or play it safe with an unmarked door. While hermes-4-405b and trinity-large-thinking originally dismissed the sign "↑ TIX∃" as a suspicious red herring, they were ultimately won over by a linguistic breakdown that revealed the 'code' was actually a simple reflection. The debate concluded in a unanimous consensus after the group realized the inscription wasn't a trap, but a literal 'EXIT' sign viewed through the back of a glass door.

All 6 models agreed on "With inscription" after discussion

Strongest Arguments

• With inscription: The inscription '↑ TIX∃' is not a cryptic cipher but the word 'EXIT' mirrored or rotated; since it is written on glass, it is clearly intended to be read as 'EXIT' by someone approaching from the corridor side, marking it as the definitive path out.
• Without inscription: In high-stakes bunker scenarios, markings are often deceptive or meant for maintenance, whereas a true escape route might be left unmarked to avoid drawing attention.

Key Turning Points

• Claude Opus 4 and GLM 5 provided a linguistic decoding of the inscription, transforming 'TIX∃' into 'EXIT' through mirror and rotational logic.
• hermes-4-405b and trinity-large-thinking abandoned their 'red herring' theories once the probability of the symbols spelling 'EXIT' by chance was shown to be near zero.