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 1

Round 1

Identified Moon in 10 counted questions.

Back to all Moon rounds
Questions
10
Outcome
Solved
Format errors
No errors
Duration
2m 20s
Round cost
$0.0208 All 11 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.

4 of 10 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 tangible physical entity?

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

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

Source 01

Source summary (model-reported)

With a radius of about 1,080 miles (1,740 kilometers), the Moon is less than a third of the width of Earth. ... Earth's Moon has a core, mantle, and crust. ... The solid, iron-rich inner core is 149 miles (240 kilometers) in radius.

Open science.nasa.gov
Source 02

Source summary (model-reported)

Our moon is the fifth largest of the 190+ moons orbiting planets in our solar system. Earth's only natural satellite is simply called "the Moon"...

Open arcnav.psi.edu
2 · Answer check returns Yes
Q2
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
Q3
1 · Guesser asks

Is it primarily man-made rather than naturally occurring?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily man-made rather than naturally occurring?"}}
Oracle evidence3 model-reported sources

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

Source 01

Source summary (model-reported)

The Moon is a rocky body that orbits planet Earth. It likely formed when a very large (Mars-sized) asteroid struck Earth 4.5 billion years ago.

Open asc-csa.gc.ca
Source 03

Source summary (model-reported)

The origin of the Moon is usually explained by a Mars-sized body striking Earth, creating a debris ring that eventually collected into a single natural satellite, the Moon.

Open en.wikipedia.org
2 · Answer check returns No
Q4
1 · Guesser asks

Is it located primarily outside Earth's atmosphere?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located primarily outside Earth's atmosphere?"}}
Oracle evidence3 model-reported sources

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

Source 02
The outermost part of our planet’s atmosphere extends well beyond the lunar orbit—almost twice the distance to the Moon. A gaseous layer that wraps around Earth reaches up to 630,000 km away. “The Moon flies through Earth’s atmosphere.”
Open esa.int
2 · Answer check returns Unknown
Q5
1 · Guesser asks

Is it a general material or substance type rather than a specific individual object, place, or celestial body?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a general material or substance type rather than a specific individual object, place, or celestial body?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The Moon is a rocky body that orbits planet Earth. ... The debris from the impact clumped together to form our natural satellite, the Moon. Other than Earth, the Moon is the most explored celestial body in our solar system.

Open asc-csa.gc.ca
2 · Answer check returns No
Q6
1 · Guesser asks

Is it a celestial body such as a planet, star, moon, or asteroid?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a celestial body such as a planet, star, moon, or asteroid?"}}
Oracle evidence2 model-reported sources

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

Source 01

Source summary (model-reported)

The Moon is a celestial body that is not luminous on its own, but reflects the sunlight falling on it. The Moon is the only major natural satellite of Earth.

Open astro4edu.org
Source 02

Source summary (model-reported)

The Moon is a rocky body that orbits planet Earth. Other than Earth, the Moon is the most explored celestial body in our solar system.

Open asc-csa.gc.ca
2 · Answer check returns Yes
Q7
1 · Guesser asks

Is it a star, including the Sun?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a star, including the Sun?"}}
Oracle evidence3 model-reported sources

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

Source 02

Source summary (model-reported)

NASA states that Earth is a satellite orbiting the Sun and that the Moon is a satellite because it orbits Earth; Earth and the Moon are examples of natural satellites.

Open spaceplace.nasa.gov
2 · Answer check returns No
Q8
1 · Guesser asks

Is it a planet in our solar system?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a planet in our solar system?"}}
Oracle evidence3 model-reported sources

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

Source 03

Source summary (model-reported)

Our moon is the fifth largest of the 190+ moons orbiting planets in our solar system. Earth's only natural satellite is simply called "the Moon".

Open arcnav.psi.edu
2 · Answer check returns No
Q9
1 · Guesser asks

Is it a natural moon orbiting a planet?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a natural moon orbiting a planet?"}}
Oracle evidence3 model-reported sources

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

Source 03

Source summary (model-reported)

The Earth-Moon system consists of our planet and its natural satellite, the Moon. Britannica also notes that the Moon and Earth orbit a common center of mass, while describing the Moon as appearing to orbit Earth.

Open britannica.com
2 · Answer check returns Yes
Q10
1 · Guesser asks

Does it orbit Earth?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit Earth?"}}
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

Moon

Earth's natural satellite

Validator rationale The proposal identifies the specific Moon, Earth's natural satellite, matching the target entity.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Earth's natural satellite","name":"Moon","question":null}}
2 · Validator returns Yes