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.
- Questions
- 10
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 2m 24s
- Round cost
- $0.0653 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.
{"category":"thing","event":"BEGIN","variation_token":"BKXG3AZI"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Q1
1 · Guesser asks
Is the subject a physical, tangible entity?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a physical, tangible entity?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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 (opens in a new tab)
Source summary (model-reported)
With a radius of about 1,080 miles (1,740 kilometers), the Moon is ... 238,855 miles (384,400 kilometers) away. Earth's only natural satellite ...
Open solarsystem.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q2
1 · Guesser asks
Is it primarily man-made?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily man-made?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Earth’s Moon was born out of destruction. Several theories about our Moon’s formation vie for dominance, but almost all share that point in common: near the time of the solar system’s formation, about 4.5 billion years ago, something ― perhaps a single object the size of Mars, perhaps a series of objects ― crashed into the young Earth and flung enough molten and vaporized debris into space to create the Moon.Open science.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is it a living organism, or derived from a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism, or derived from a living organism?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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 (opens in a new tab)
The Apollo evidence all pointed to the Moon forming from a large impact. Lunar “soil” is made of pulverized rock created by meteorite impacts.Open science.nasa.gov (opens in a new tab)
Source summary (model-reported)
The Moon consists of three main layers: a crust, a mantle, and a core. Billions of years ago, the Moon was a molten world; as it solidified, metals and rocks formed its internal structure.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q4
1 · Guesser asks
Is it naturally found on Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it naturally found on Earth?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is an average of 238,855 miles (384,400 kilometers) away. [...] As the Moon orbits Earth, different parts are in sunlight or darkness at different times.Open science.nasa.gov (opens in a new tab)
Distance from Earth 238,855 miles | 384,400 kilometers [...] Earth's Moon is the only place beyond Earth where humans have set foot, so far.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Is it located within our Solar System?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located within our Solar System?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Within the Solar System, it is larger and more massive than any known dwarf planet, and the fifth-largest and fifth-most massive moon.Open en.wikipedia.org (opens in a new tab)
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 (opens in a new tab)
2 · Answer check returns Yes
Q6
1 · Guesser asks
Is it a specific, individually named celestial body or feature?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a specific, individually named celestial body or feature?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NASA's Planetary Data System identifies Luna and describes it as Earth's only natural satellite, which is simply called "the Moon."
Open arcnav.psi.edu (opens in a new tab)Source summary (model-reported)
The International Astronomical Union calls Earth's satellite "the Moon", with a capital "M"; other natural satellites are called 'moons' with a lowercase "m".
Open en.wikipedia.org (opens in a new tab) 2 · Answer check returns Yes
Q7
1 · Guesser asks
Is it an entire celestial body, rather than a surface feature or atmospheric phenomenon?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an entire celestial body, rather than a surface feature or atmospheric phenomenon?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Moon, Earth’s sole natural satellite and nearest large celestial body.Open britannica.com (opens in a new tab)
The Moon is the only natural satellite of Earth. ... In geophysical terms, the Moon is a planetary-mass object or satellite planet.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
Q8
1 · Guesser asks
Is it a natural satellite (moon) of a planet or dwarf planet?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a natural satellite (moon) of a planet or dwarf planet?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NASA identifies the Moon as Earth's satellite.
Open nasa.gov (opens in a new tab)Source summary (model-reported)
NASA's Planetary Data System describes Earth's only natural satellite as the Moon.
Open arcnav.psi.edu (opens in a new tab) 2 · Answer check returns Yes
Q9
1 · Guesser asks
Does it orbit a planet located beyond the asteroid belt?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit a planet located beyond the asteroid belt?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The Moon makes a complete orbit around Earth in 27 Earth days...
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
Starting from the center and moving outward: the Sun ... Mercury ... Venus, Earth, and Mars ... [then] Main Asteroid Belt ... A thin, white circle representing Jupiter’s orbit appears toward the edges.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q10
1 · Guesser asks
Does it orbit Mars?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit Mars?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NASA states that “The Moon makes a complete orbit around Earth in 27 Earth days” and explains that it appears to orbit us every 29 days from Earth's perspective.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
NASA identifies Phobos as the tiny Martian moon and describes its orbital path around Mars, distinguishing it from Earth's Moon.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns No
G
1 · Guesser guessesNot counted
The Moon
Earth's only permanent natural satellite
Validator rationale “The Moon” and “Earth's only permanent natural satellite” identify the specific celestial body targeted, not the general class of natural satellites.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Earth's only permanent natural satellite","name":"The Moon","question":null}} 2 · Validator returns Yes