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
- Errors found View one example
- Duration
- 1m 12s
- Round cost
- $0.0196 All 11 turns
Format warning
The model sent replies in the wrong format.
The Guesser sent 1 invalid reply. Each one before the question limit used up a counted turn. The model was only reminded of the required format; it was never told whether its question or guess was correct.
- Valid format
- 90.9%
- Format errors
- 1
- Turns used by format errors
- 1
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.
3 of 9 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 reply rejectedTurn counted
Reply in the wrong format.
Invalid action · fixed format reminder sent
Why this reply was rejectedInvalid action · turn 1
The reply was JSON, but it matched neither the ASK nor the GUESS format.
- Recorded type
invalid_action- Turn
- 1
- Counted
- Yes · question 1
- Feedback
- FORMAT_ERROR
{"action":"ASK","question":"Is it a living thing (or derived from one)?"}{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}} A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.
2 · System responseFORMAT
Q2
1 · Guesser asks
Is it a living thing?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living thing?"}}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)
Earth's Moon is the only place beyond Earth where humans have set foot, so far. Earth's only natural satellite is simply called "the Moon"...Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is it man-made?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it man-made?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The Moon is Earth's only natural satellite. The Moon likely formed after a Mars-sized body collided with Earth several billion years ago. The resulting debris from both Earth and the impactor accumulated to form our natural satellite.Open science.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Can it be physically touched?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Can it be physically touched?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Humans once walked on the Moon. Pictured above is the second person to stand on the lunar surface: Edwin "Buzz" Aldrin. During this Apollo 11 mission, Neil Armstrong ... and Buzz Aldrin landed on the Moon.
Open apod.nasa.gov (opens in a new tab)Source summary (model-reported)
The Lunar Reconnaissance Orbiter Camera imaged the Apollo 17 landing site with enough detail to see the tracks of the rover and footprints the astronauts left behind. The images show evidence of activities undertaken by astronauts on the lunar surface.
Open science.nasa.gov (opens in a new tab)Source summary (model-reported)
On Nov. 20, 1969, Apollo 12 astronauts examined the Surveyor 3 spacecraft during their second extravehicular activity on the Moon. The astronauts walked up to the spacecraft and removed parts from it.
Open science.nasa.gov (opens in a new tab) 2 · Answer check returns Yes
Q5
1 · Guesser asks
Is it larger than a human being?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it larger than a human being?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
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.
Open solarsystem.nasa.gov (opens in a new tab)Source summary (model-reported)
The Moon has 3474 km in diameter, while the Earth is 12 756 km.
Open esa.int (opens in a new tab) 2 · Answer check returns Yes
Q6
1 · Guesser asks
Is it located on Earth (rather than in space)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on Earth (rather than in space)?"}}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).Open science.nasa.gov (opens in a new tab)
The Moon is an average of 238,855 miles (384,400 kilometers) away. That means 30 Earth-sized planets could fit in between Earth and the Moon.Open solarsystem.nasa.gov (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Is it a star?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a star?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The source distinguishes stars, planets, dwarf planets, asteroids, and moons. It states that stars produce their own energy through nuclear fusion, while moons are celestial bodies orbiting a planet or another small celestial body and do not generate their own light.
Open asc-csa.gc.ca (opens in a new tab)Source summary (model-reported)
The Canadian Space Agency describes the Moon as Earth's natural satellite and gives its average distance from Earth, mass, orbital period, and other characteristics.
Open asc-csa.gc.ca (opens in a new tab) 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 summary (model-reported)
Earth's only natural satellite is simply called "the Moon".
Open solarsystem.nasa.gov (opens in a new tab)The IAU definition also excludes moons from being planets.Open nasa.gov (opens in a new tab)
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 (opens in a new tab) 2 · Answer check returns No
Q9
1 · Guesser asks
Is it a natural satellite (like a moon of a planet)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a natural satellite (like a moon of a planet)?"}}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)
The Moon is the only natural satellite of Earth.Open en.wikipedia.org (opens in a new tab)
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body.Open en.wikipedia.org (opens in a new tab)
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.
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)
The Moon is the only natural satellite of Earth. It orbits around Earth at an average distance of 384,399 kilometers (238,854 mi).Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
The Moon
The natural satellite that orbits Earth
Validator rationale The proposal identifies Earth's specific natural satellite, the Moon, matching the target entity as a whole.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The natural satellite that orbits Earth","name":"The Moon","question":null}} 2 · Validator returns Yes