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 17s
- Round cost
- $0.0621 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.
2 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 the subject a tangible physical object that can be touched?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a tangible physical object that can be touched?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
NASA identifies Neil Armstrong and Edwin "Buzz" Aldrin as the first of 12 human beings to walk on the Moon and shows an astronaut standing on the Moon's surface.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
NASA states that on July 20, 1969, Edwin "Buzz" Aldrin walked on the surface of the Moon during the Apollo 11 extravehicular activity.
Open nasa.gov (opens in a new tab)Source summary (model-reported)
NASA reports that Armstrong and Aldrin spent 21.5 hours on the lunar surface and that tracks left by the astronauts remain visible there.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q2
1 · Guesser asks
Is the subject a man‑made object?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a man‑made object?"}}Oracle evidence3 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, also known as Luna, is Earth's only natural satellite (the only object which orbits the Earth and is not man-made).Open simple.wikipedia.org (opens in a new tab)
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 (opens in a new tab) 2 · Answer check returns No
Q3
1 · Guesser asks
Is the subject a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject 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.Open timeanddate.com (opens in a new tab)
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
Q4
1 · Guesser asks
Is the subject a mountain?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a mountain?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
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)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
Q5
1 · Guesser asks
Is the subject a body of water?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a body of water?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Like Earth, 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, the heaviest materials (metals like iron) sank down into the Moon’s center, and the lighter materials (lower density rocks) rose towards the surface.
Open science.nasa.gov (opens in a new tab)The Moon is a rocky body that orbits planet Earth.Open asc-csa.gc.ca (opens in a new tab)
Source summary (model-reported)
Since the ancient time of volcanism, the arid, lifeless Moon has remained nearly unchanged. With essentially no atmosphere to impede impacts, a steady rain of asteroids, meteoroids, and comets strikes the surface.
Open jpl.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q6
1 · Guesser asks
Is the subject a type of rock?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a type of rock?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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)
In geophysical terms, the Moon is a planetary-mass object or satellite planet.Open en.wikipedia.org (opens in a new tab)
Almost all the rocks at the lunar surface are igneous—they formed from the cooling of lava. The two most common kinds are basalts and anorthosites.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Is the subject a mineral?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a mineral?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Minerals forming the lunar crust are made up of oxygen, silicon, magnesium, iron, calcium, and aluminum, along with small amounts of titanium, uranium, thorium, potassium, and hydrogen.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
A mineral is a naturally occurring inorganic substance with characteristic chemical composition and internal order. The document also identifies ilmenite as a common mineral on the Moon and discusses major lunar minerals.
Open ntrs.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q8
1 · Guesser asks
Is the subject primarily composed of water (in any state)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily composed of water (in any state)?"}}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 world with a core, a mantle, and a crust. ... The lunar mantle is mainly composed of basalt rich in olivine and pyroxene.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
Researchers have confirmed that water exists both in the sunlit and shadowed surfaces of the Moon. ... LCROSS and LRO observations showed grains of water ice in ejected material from a permanently shadowed crater.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
Current estimates of water-ice availability embedded in regolith within the Moon’s permanently shadowed regions range between 1-5% by weight.
Open ntrs.nasa.gov (opens in a new tab) 2 · Answer check returns No
Q9
1 · Guesser asks
Is the subject typically spherical in shape?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject typically spherical in shape?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
High-resolution maps describe the shape of the Moon as a sphere, with maximum positive and negative deviations of approximately 8 km.
Open ntrs.nasa.gov (opens in a new tab)Source summary (model-reported)
The Moon is not perfectly spherical because strong forces pull it in different directions. Lunar rotation and tidal forces produce bulges, while impact basins and gravity anomalies also affect its global figure.
Open eos.org (opens in a new tab)Source summary (model-reported)
A body as massive as a planet or large moon has sufficient gravity to pull its solid rock, liquid oceans, and gaseous atmosphere into the shape of a sphere.
Open smithsonianmag.com (opens in a new tab) 2 · Answer check returns Yes
Q10
1 · Guesser asks
Does the subject produce its own light (i.e., shine without reflecting another source)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject produce its own light (i.e., shine without reflecting another source)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon does not make its own light. "Moonlight” is actually reflected sunlight.Open science.nasa.gov (opens in a new tab)
The Moon does not shine with its own light. It simply reflects light coming from the Sun.Open spaceplace.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Is the subject a planet?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject a planet?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The answer is technically no — at least according to NASA and the International Astronomical Union (IAU), an important global authority in astronomy. An object needs to meet four criteria to be a planet, per the IAU. It must be big enough that gravity pulls it into a nice, round shape and big enough to have cleared out all the asteroids and other junk from its orbit.Open livescience.com (opens in a new tab)
Source summary (model-reported)
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)Source summary (model-reported)
The difference between a moon and a planet is that a planet orbits a star, and a moon orbits a planet. The Moon is Earth's natural satellite.
Open asc-csa.gc.ca (opens in a new tab) 2 · Answer check returns No
Q12
1 · Guesser asks
Does the subject orbit Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does the subject orbit Earth?"}}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 and rotates or spins at that same rate, or in that same amount of time.Open solarsystem.nasa.gov (opens in a new tab)
The Moon is a rocky body that orbits planet Earth. The Moon completes one orbit around Earth in 27.3 days.Open asc-csa.gc.ca (opens in a new tab)
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 as a whole.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Earth's natural satellite","name":"Moon","question":null}} 2 · Validator returns Yes