Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
What changed
Source
Menu
Round

Round 1

Round 1

Identified Eyebrow in 20 counted questions.

Back to all Eyebrow rounds
Questions
20
Outcome
Solved
Format errors
No errors
Duration
4m 4s
Round cost
$0.1982 All 21 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":"EAQCORIU"}

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

3 of 20 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 a living organism?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism?"}}
Oracle evidence2 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 human-made?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it human-made?"}}
Oracle evidence3 model-reported sources

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

Source 03

Source summary (model-reported)

The American Academy of Ophthalmology describes eyebrows as curved hairs above the eyes and discusses their biological functions, while separately noting that people may wax, tweeze, or dye them.

Open aao.org
2 · Answer check returns No
Q3
1 · Guesser asks

Is it found on Earth, including its atmosphere?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it found on Earth, including its atmosphere?"}}
Oracle evidence1 model-reported source

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

2 · Answer check returns Yes
Q4
1 · Guesser asks

Is it a tangible physical thing?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a tangible physical thing?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
Q5
1 · Guesser asks

Is it mainly a solid?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it mainly a solid?"}}
Oracle evidence3 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 typically larger than an adult human?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it typically larger than an adult human?"}}
Oracle evidence1 model-reported source

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

2 · Answer check returns No
Q7
1 · Guesser asks

Is it geological in origin?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it geological in origin?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q8
1 · Guesser asks

Was it produced by or once part of a living organism?

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

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

Source 01

Source summary (model-reported)

The article reviews the biology, structure, and function of eyebrow hair, including the structure and function of the hair follicle, hair follicle morphogenesis, and cycling. It states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body.

Open pubmed.ncbi.nlm.nih.gov
Source 02

Source summary (model-reported)

The source states that the growth phase lasts only a few months for eyebrows and eyelashes, and identifies thicker terminal hairs on the head in areas including the eyebrows. It also states that the hair follicle is essential for producing and sustaining hair growth.

Open ncbi.nlm.nih.gov
2 · Answer check returns Yes
Q9
1 · Guesser asks

Is it derived from an animal?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it derived from an animal?"}}
Oracle evidence3 model-reported sources

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

2 · Answer check returns Unknown
Q10
1 · Guesser asks

Is it derived from a plant?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it derived from a plant?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The article reviews the structure and function of the hair follicle and states that eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body, differing in their shorter anagen (growing) phase.

Open pubmed.ncbi.nlm.nih.gov
Source 02

Source summary (model-reported)

The American Academy of Ophthalmology describes eyebrows as curved, delicate hairs above the human eyes and discusses their biological functions, including diverting sweat and rain away from the eyes.

Open aao.org
2 · Answer check returns No
Q11
1 · Guesser asks

Was it produced by a fungus?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was it produced by a fungus?"}}
Oracle evidence3 model-reported sources

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

Source 02

Source summary (model-reported)

The article reviews eyebrow hair structure and function, including hair follicle morphogenesis and cycling. Eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body, with a shorter growing phase.

Open pubmed.ncbi.nlm.nih.gov
Source 03

Source summary (model-reported)

The hair follicle forms from ectodermal hair follicle stem cells through neuroectodermal-mesodermal interactions. It develops from a thickening in ectodermal tissue called a placode.

Open ncbi.nlm.nih.gov
2 · Answer check returns No
Q12
1 · Guesser asks

Was it produced by bacteria or other microscopic organisms?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was it produced by bacteria or other microscopic organisms?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

The biology, structure, and function of eyebrow hair. Eyebrow hair follicles share the same basic structure as hair follicles elsewhere on the body, but are distinguished by their shorter anagen (growing) phase.

Open pubmed.ncbi.nlm.nih.gov
Source 02

Source summary (model-reported)

The pilosebaceous unit is the hair follicle's structural unit... The growth phase can last 2 to 6 years for scalp hair and only a few months for eyebrows and eyelashes. The dermal papilla signals to epithelial stem cells at the beginning of anagen.

Open ncbi.nlm.nih.gov
2 · Answer check returns No
Q13
1 · Guesser asks

Is it a part of a human body?

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

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

2 · Answer check returns Yes
Q14
1 · Guesser asks

Is it normally located inside the human body, rather than on the surface?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it normally located inside the human body, rather than on the surface?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns No
Q15
1 · Guesser asks

Is it normally found on the head?

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

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

2 · Answer check returns Yes
Q16
1 · Guesser asks

Is it composed mainly of keratin?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it composed mainly of keratin?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

Externally, hair is thin, flexible tubes of dead, fully keratinized epithelial cells. The article also identifies eyebrows as androgen-independent hair.

Open ovid.com
2 · Answer check returns Yes
Q17
1 · Guesser asks

Does it grow from the scalp?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow from the scalp?"}}
Oracle evidence2 model-reported sources

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

Source 02

Source summary (model-reported)

The source distinguishes scalp hair from eyebrow hair: scalp hair has a growth phase lasting 2 to 6 years, while the growth phase for eyebrows and eyelashes lasts only a few months. It also lists the scalp, eyebrows, and eyelashes as separate areas containing terminal hairs.

Open ncbi.nlm.nih.gov
2 · Answer check returns No
Q18
1 · Guesser asks

Is it located on or around the eyes?

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

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

2 · Answer check returns Yes
Q19
1 · Guesser asks

Does it grow from the margin of an eyelid?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it grow from the margin of an eyelid?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

The eyebrows usually extend further laterally than medially, in relation to the eye... Eyelashes: Hairs that emanate from the margins of the eyelids... The upper lid is bounded... inferiorly by the lid margin.

Open elementsofmorphology.nih.gov
Source 02

Source summary (model-reported)

The eyelid margin describes the portion located at the edge of the eyelid. It is ... the site of the eyelashes as well as the orifice (opening) of the meibomian glands.

Open aao.org
2 · Answer check returns No
Q20
1 · Guesser asks

Is it located above the eye rather than below it?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located above the eye rather than below it?"}}
Oracle evidence2 model-reported sources

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

2 · Answer check returns Yes
G
1 · Guesser guessesNot counted

eyebrow

strip of keratinous hair growing above the human eye

Validator rationale The proposal identifies the general human eyebrow, including its defining location and hair-based anatomical function; “strip of keratinous hair” is an acceptable descriptive variant.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"strip of keratinous hair growing above the human eye","name":"eyebrow","question":null}}
2 · Validator returns Yes