Deep20Bench
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Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
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Round

Round 3

Round 3

Identified Eyebrow in 12 counted questions.

Back to all Eyebrow rounds
Questions
12
Outcome
Solved
Format errors
No errors
Duration
2m 57s
Round cost
$0.1191 All 13 turns

Transcript

Questions and answers.

Turns are shown in the order they happened. Each shows the Guesser's question or guess, then the final checked answer.

Exact Guesser setupSystem message and BEGIN event

The Guesser received these messages at the start of the round. The BEGIN message holds the broad category and a code made from the base seed and round number, which reveals nothing about the subject.

System message
You are the Guesser in a Twenty Questions benchmark. Identify the hidden subject using as few
counted turns as possible. BEGIN provides only its broad category. The variation_token has no
clues; do not interpret, mention, or repeat it.

The category in BEGIN has a broad meaning:
- person: a real human, living or historical.
- fictional_character: an invented character from a story, book, comic, film, television,
  game, or another fictional work.
- mythological_figure: a figure from mythology or traditional legend.
- video_game_character: a character known from video games.
- thing: a broad category covering natural and human-made entities, living or nonliving,
  whole entities or parts of them. Possibilities include everyday objects, tools, machines,
  materials, food, animals, plants, body parts, natural structures, geographical features,
  celestial bodies, natural phenomena, and concepts. These possibilities are not exhaustive.
  The target may be a general kind or one particular instance.

Use questions to narrow the supplied category. These definitions are not a list of targets.

Use ASK for a factual question that distinguishes candidates. Never use ASK to confirm a
specific identity. Use GUESS with a name and short identifying description to name a candidate.

ASK has five possible replies:
- YES or NO: the evidence establishes that answer to the exact question.
- RATHER_YES or RATHER_NO: evidence leans that way, but is not strong enough for a firm answer.
  Treat this as a clue; keep candidates fitting the opposite answer possible.
- UNKNOWN: no reliable direction. It supports neither answer.

Ask clear questions about verifiable properties. "Can", "sometimes", "usually", "always", and
"mainly" ask different things. Do not assume that one property proves another or rules out alternatives.
Qualified replies express uncertainty about your question, not how often a property applies.
Before narrowing heavily, check your key assumption with a different property. After rejected
guesses, reconsider earlier assumptions as well as candidates. Answers can be mistaken; check
another property when stuck. Do not ignore an answer merely because it conflicts with a
preferred candidate.

Each ASK, rejected GUESS, or format error before the limit costs one turn. A correct GUESS costs
none. After 40 counted turns, make one final GUESS; ASK is then forbidden. Identity
validation uses only YES, NO, or UNKNOWN. UNKNOWN on GUESS ends the game without success.

FORMAT_ERROR means your output broke the contract, was not checked for correctness, and cost
one turn. Retry using its displayed formats if a turn remains. Return only the required JSON
object with exactly one result action. No explanations, reasoning, or extra fields.
BEGIN event
{"category":"thing","event":"BEGIN","variation_token":"AMZAISLM"}

Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.

1 of 12 answers in this round reuse an earlier, fully checked answer with its original evidence. No new search or check ran for those turns.

Q1
1 · Guesser asks

Is it something created or manufactured by humans?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it something created or manufactured by humans?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q2
1 · Guesser asks

Is it a living organism, or part of a living organism?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism, or part of a living organism?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q3
1 · Guesser asks

Is it an animal or a part of an animal (including humans)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an animal or a part of an animal (including humans)?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

Britannica describes eyebrows as ridges of skin covered with hair located above the eyes and identifies their protective and communicative functions.

Open britannica.com
Source 02

Source summary (model-reported)

The page describes an eyebrow as an area of short terminal hairs above each eye and states that, in humans, eyebrows help prevent sweat, water, and debris from falling into the eye socket.

Open en.wikipedia.org
Source 03

Source summary (model-reported)

The NCBI Bookshelf describes eyelashes and eyebrows as important anatomical structures and states that eyebrow hair helps protect the eyes from particulate matter and sweat.

Open ncbi.nlm.nih.gov
2 · Answer check returns Yes
Q4
1 · Guesser asks

Is it a whole animal (such as a species or type of animal), rather than a body part or organ?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a whole animal (such as a species or type of animal), rather than a body part or organ?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q5
1 · Guesser asks

Is it a body part, organ, or substance normally found in the human body?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a body part, organ, or substance normally found in the human body?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q6
1 · Guesser asks

Is it normally visible on the outside of the human body?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it normally visible on the outside of the human body?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q7
1 · Guesser asks

Is it located primarily on the head or neck?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located primarily on the head or neck?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q8
1 · Guesser asks

Is it an eye, ear, or nose, or a part of one of these three structures?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an eye, ear, or nose, or a part of one of these three structures?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The general anatomy of the non-globe periorbital region is depicted... Brow: The soft tissue at the junction of the frontalis and orbicularis oculi muscles, overlying the bony supraorbital ridge. Eyebrow: The arch of hair on the brow.

Open elementsofmorphology.nih.gov
2 · Answer check returns No
Q9
1 · Guesser asks

Is it the mouth, or a structure located in or immediately around the mouth (such as lips, teeth, tongue, or gums)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it the mouth, or a structure located in or immediately around the mouth (such as lips, teeth, tongue, or gums)?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q10
1 · Guesser asks

Is it hair or a structure composed of hair (such as scalp hair, an eyebrow, a beard, or a mustache)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it hair or a structure composed of hair (such as scalp hair, an eyebrow, a beard, or a mustache)?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q11
1 · Guesser asks

Is it located near the eyes (such as an eyebrow or an eyelash)?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located near the eyes (such as an eyebrow or an eyelash)?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q12
1 · Guesser asks

Is it located above the eye socket on the brow ridge, rather than growing from the margin of the eyelid?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located above the eye socket on the brow ridge, rather than growing from the margin of the eyelid?"}}
Oracle evidence1 model-reported source

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01
Brow: The soft tissue at the junction of the frontalis and orbicularis oculi muscles, overlying the bony supraorbital ridge. Eyebrow: The arch of hair on the brow... Eyelashes: Hairs that emanate from the margins of the eyelids.
Open elementsofmorphology.nih.gov
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted

Eyebrow

An area of short hairs above each eye that follows the shape of the lower margin of the brow ridges in humans and some other mammals.

Validator rationale The proposal identifies the human eyebrow as the anatomical area of short hairs above the eye; mentioning some other mammals is compatible with the target.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"An area of short hairs above each eye that follows the shape of the lower margin of the brow ridges in humans and some other mammals.","name":"Eyebrow","question":null}}
2 · Validator returns Yes