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
- 12
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 2m 57s
- Round cost
- $0.1086 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.
{"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.
3 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 a human-made object or artifact?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a human-made object or artifact?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is the only natural satellite of Earth.Open en.wikipedia.org (opens in a new tab)
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)
2 · Answer check returns No
Q2
1 · Guesser asks
Is it a living organism or a biological part of a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism or a biological part of a living organism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite... The many missions that have explored the Moon have found no evidence to suggest it has its own living things.Open solarsystem.nasa.gov (opens in a new tab)
The Moon is... the only natural satellite of Earth, a ball of rock that spins around its own axis while orbiting the Earth.Open eso.org (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is it a physical substance or material, such as a mineral, element, rock, or liquid?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a physical substance or material, such as a mineral, element, rock, or liquid?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite. [...] The Moon has a solid, rocky surface [...] The mantle [...] is most likely made of minerals like olivine and pyroxene, which are made up of magnesium, iron, silicon, and oxygen atoms.Open science.nasa.gov (opens in a new tab)
As it solidified, the heaviest materials (metals like iron) sank down into the Moon’s center, and the lighter materials (lower density rocks) rose towards the surface. The lunar mantle is [...] mostly solid [...] and is mainly composed of basalt rich in olivine and pyroxene.Open science.nasa.gov (opens in a new tab)
Earth's only natural satellite is simply called "the Moon" [...] Earth's Moon has a core, mantle, and crust. [...] The mantle [...] is most likely made of minerals like olivine and pyroxene.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Is it a geographical feature, landform, body of water, or celestial body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a geographical feature, landform, body of water, or celestial body?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite... It is the only celestial body beyond Earth – so far – visited by human beings.Open science.nasa.gov (opens in a new tab)
Naturally-formed bodies that orbit planets are called moons, or planetary satellites... Moons – also called natural satellites – come in many shapes, sizes and types. They are generally solid bodies.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns Yes
Q5
1 · Guesser asks
Is it a celestial body or astronomical object located outside of Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a celestial body or astronomical object located outside of Earth?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The Moon is Earth's only natural satellite. It goes around the Earth at a distance of about 239,000 miles (385,000 kilometers). It is the only celestial body beyond Earth – so far – visited by human beings.
Open solarsystem.nasa.gov (opens in a new tab)Source summary (model-reported)
The Moon is the only natural satellite of Earth. The Moon is the brightest celestial object in Earth's night sky.
Open en.wikipedia.org (opens in a new tab) 2 · Answer check returns Yes
Q6
1 · Guesser asks
Is it a specific named astronomical object, rather than a general category or type of celestial body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a specific named astronomical object, rather than a general category or type of celestial body?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Earth's only natural satellite is simply called "the Moon" because people didn't know other moons existed until Galileo Galilei discovered four moons orbiting Jupiter in 1610. In Latin, the Moon is called Luna.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns Yes
Q7
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.
Source summary (model-reported)
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)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 (opens in a new tab) 2 · Answer check returns Yes
Q8
1 · Guesser asks
Is it one of the major planets or dwarf planets in our Solar System?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it one of the major planets or dwarf planets in our Solar System?"}}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 only natural satellite and states that it is simply called “the Moon.”
Open solarsystem.nasa.gov (opens in a new tab)Source summary (model-reported)
NASA defines moons as naturally formed bodies that orbit planets, and notes that moons also orbit dwarf planets, asteroids, comets, and other objects.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q9
1 · Guesser asks
Is it a natural satellite (moon) that orbits a planet or dwarf planet?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a natural satellite (moon) that orbits a planet or dwarf planet?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite. It goes around the Earth at a distance of about 239,000 miles (385,000 kilometers). The Moon makes a complete orbit around Earth in 27 Earth days.Open solarsystem.nasa.gov (opens in a new tab)
Source summary (model-reported)
NASA describes Makemake as a dwarf planet and refers to MK 2 as its moon, stating that it is a moon orbiting a dwarf planet.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Does it orbit either Jupiter or Saturn?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit either Jupiter or Saturn?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon makes a complete orbit around Earth in 27 Earth days.Open solarsystem.nasa.gov (opens in a new tab)
The Moon is Earth's only natural satellite. It goes around the Earth at a distance of about 239,000 miles (385,000 kilometers).Open science.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Does it orbit either Earth or Mars?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit either Earth or Mars?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite. It goes around the Earth at a distance of about 239,000 miles (385,000 kilometers). The Moon makes a complete orbit around Earth in 27 Earth days.Open solarsystem.nasa.gov (opens in a new tab)
The Moon revolves around Earth in an elliptical orbit with a mean eccentricity of 0.0549.Open eclipse.gsfc.nasa.gov (opens in a new tab)
2 · Answer check returns Yes
Q12
1 · Guesser asks
Does it orbit the planet Mars?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does it orbit the planet Mars?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NASA states that the Moon is Earth's only natural satellite, goes around Earth at about 239,000 miles (385,000 kilometers), and completes a full orbit around Earth in 27 Earth days.
Open solarsystem.nasa.gov (opens in a new tab) 2 · Answer check returns No
G
1 · Guesser guessesNot counted
The Moon
Earth's only natural satellite.
Validator rationale “The Moon” and “Earth's only natural satellite” identify the specific celestial body, Earth's Moon, matching the target.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Earth's only natural satellite.","name":"The Moon","question":null}} 2 · Validator returns Yes