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
- 11
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 2m 28s
- Round cost
- $0.1199 All 12 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":"EAQCORIU"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
2 of 11 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 the target a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a living organism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is a barren, lifeless world. But its large size has played an important role in the development of life on Earth.Open timeanddate.com (opens in a new tab)
The Moon, the natural satellite of Earth ... The Moon is a rocky body that orbits planet Earth.Open asc-csa.gc.ca (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Is the target a human-made object or material?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a human-made object or material?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Almost all [Moon-formation] theories share that point in common: near the time of the solar system's formation, about 4.5 billion years ago, something ... crashed into the young Earth and flung enough molten and vaporized debris into space to create the Moon. Earth's Moon is thought to have formed in a tremendous collision.
Open science.nasa.gov (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, very early in our planet's history. The debris from the impact clumped together to form our natural satellite, the Moon.Open asc-csa.gc.ca (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is the target a physical entity that can be touched or observed in nature?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a physical entity that can be touched or observed in nature?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)Source summary (model-reported)
The Moon is a rocky body that orbits planet Earth... The first artificial object sent to the Moon was a Soviet probe called Luna 2, which crashed onto the Moon's surface on September 14, 1959.
Open asc-csa.gc.ca (opens in a new tab) 2 · Answer check returns Yes
Q4
1 · Guesser asks
Is the target primarily located on or near Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target primarily located on or near Earth?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Earth's only natural satellite is simply called "the Moon"... The Moon is an average of 238,855 miles (384,400 kilometers) away... 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)
AVERAGE ORBIT DISTANCE... Earth's Moon: 384,400 km.
Open solarsystem.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q5
1 · Guesser asks
Is the target a geological feature or formation?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a geological feature or formation?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
A moon is a natural satellite that orbits a planet. Earth has only one moon, while other planets in our solar system and beyond have many moons.
Open usgs.gov (opens in a new tab)Source summary (model-reported)
Moon, Earth’s sole natural satellite and nearest large celestial body. The Moon is a spherical rocky body, probably with a small metallic core, revolving around Earth.
Open britannica.com (opens in a new tab)Source summary (model-reported)
A landform is any conspicuous topographic feature on the Earth or a similar planetary body or satellite. Familiar examples are mountains, plateaus, and valleys; comparable structures have been detected on the Moon.
Open britannica.com (opens in a new tab) 2 · Answer check returns No
Q6
1 · Guesser asks
Is the target mainly composed of water?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target mainly composed of water?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The Moon, like Earth, is a layered or "differentiated" world with a core, mantle, and crust. The lunar mantle is the thickest layer of the Moon. It’s mostly solid ... mainly composed of basalt rich in olivine and pyroxene.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
The discovery that the Moon harbors water ice ... the highest concentrations occur within darkened craters at the poles. ... there are actually high concentrations of ice water in the permanently shadowed regions of the lunar poles.
Open science.nasa.gov (opens in a new tab)On the Moon, water is found all over the surface, but it’s mainly in the form of ice and not pools of liquid water. ... The sunlit Moon, however, has 100 times less water than the Sahara Desert, but the poles of the Moon may contain tons of ice.Open nasa.gov (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Is the target mainly solid in its typical form?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target mainly solid in its typical form?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The Moon has a solid, rocky surface cratered and pitted from impacts by asteroids, meteorites, and comets. Earth's Moon has a core, mantle, and crust. The solid, iron-rich inner core is surrounded by a liquid iron shell.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
The result is a structure a bit like a chocolate-dipped cherry – solid core, mostly solid/partly liquid mantle, and thin outer crust. The lunar mantle is the thickest layer of the Moon. It’s mostly solid, but the zone closest to the lunar core is partly molten.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q8
1 · Guesser asks
Is the target a naturally occurring mineral, rock, or element?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a naturally occurring mineral, rock, or element?"}}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. It likely formed when a very large (Mars-sized) asteroid struck Earth 4.5 billion years ago... The debris from the impact clumped together to form our natural satellite, the Moon.Open asc-csa.gc.ca (opens in a new tab)
The Moon has a solid, rocky surface cratered and pitted from impacts by asteroids, meteorites, and comets. Apollo astronauts brought back a total of 842 pounds (382 kilograms) of lunar rocks and soil to Earth.Open science.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Is the target a celestial body or object in space?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a celestial body or object in space?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)Source summary (model-reported)
The moon is Earth's most constant companion and the easiest celestial object to find in the night sky... While it's a satellite of Earth...
Open space.com (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Does the target orbit Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the target orbit Earth?"}}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 science.nasa.gov (opens in a new tab)
The Moon makes a complete orbit around Earth in 27 Earth days and rotates or spins at that same rate.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Is the target a natural satellite?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the target a natural satellite?"}}Oracle evidence2 model-reported sources
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.Open solarsystem.nasa.gov (opens in a new tab)
Source summary (model-reported)
NASA's resource is titled "The Moon: Earth's Satellite" and presents Earth's Moon as a satellite in its space-science educational material.
Open nasa.gov (opens in a new tab) 2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Moon
Earth's only permanent natural satellite
Validator rationale The proposed identity names the Moon and describes Earth's natural satellite, matching the specific target celestial body as a whole.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Earth's only permanent natural satellite","name":"Moon","question":null}} 2 · Validator returns Yes