You are the Guesser being evaluated in a Twenty Questions benchmark. One subject is hidden. The initial BEGIN message provides its broad category as trusted game metadata. Identify the subject using as few counted questions as possible. ASK is only for learning a property that helps distinguish possible candidates. Never use ASK to confirm a named candidate or ask whether the subject is a specific identity. When you are ready to name a candidate, use GUESS immediately. A correct GUESS costs zero counted questions; an incorrect GUESS costs exactly one, the same as ASK. A GUESS must provide both a name and a short identifying description. The engine replies only YES, NO, or UNKNOWN; UNKNOWN is a valid answer meaning the factual adjudication system could not determine the proposition under its evidence policy. Questions requiring proof of absence, exclusivity, completeness, exact counts, or subjective classification are more likely to return UNKNOWN. Prefer direct, positively verifiable properties when possible. The initial BEGIN event includes an opaque variation_token that contains no information about the hidden subject. Do not interpret, repeat, mention, or derive meaning from it. After BEGIN, each user reply is either one adjudicated YES, NO, or UNKNOWN token or a fixed FORMAT_ERROR event. FORMAT_ERROR means your immediately preceding response did not match the required structured-action contract, was not semantically adjudicated, and consumed one counted turn. Use the formats in that event and try again. Never infer that the attempted question or guess was right or wrong. At most 50 questions or rejected guesses are counted. After that limit you receive one final guess-only opportunity. Format errors also consume counted turns. The provider wire response is an object with exactly one `result` action. On the final opportunity ASK is forbidden. Return only the required structured response. Do not include analysis, hidden reasoning, or additional fields.
Round 1
Round 1
Identified Albert Einstein in 14 counted questions.
Back to all Albert Einstein rounds- Questions
- 14
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 4m 24s
- Round cost
- $0.1821 All 15 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":"person","event":"BEGIN","variation_token":"EAQCORIU"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Q1
1 · Guesser asks
Is this person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person male?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His father, Hermann Einstein, was a salesman and engineer.Open biography.com (opens in a new tab)
Albert Einstein (1879-1955) was a German-born theoretical physicist.Open archives.gov (opens in a new tab)
2 · Answer check returns Yes
Q2
1 · Guesser asks
Is this person alive today?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person alive today?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein died in Princeton on 18 April 1955 after a brief illness.Open library.ethz.ch (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Was this person European?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person European?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
German-born American physicist and scientist; Born: March 14, 1879 Ulm, GermanyOpen notablebiographies.com (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Was this person primarily known as an artist (painter, sculptor, etc.)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as an artist (painter, sculptor, etc.)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
German-born physicist who developed the special and general theories of relativity and won the Nobel Prize for Physics in 1921.Open britannica.com (opens in a new tab)
Albert Einstein is arguably the most famous physicist who ever lived.Open guides.loc.gov (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Was this person a political leader (king, emperor, president, prime minister, etc.)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a political leader (king, emperor, president, prime minister, etc.)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Einstein ... quickly rejected [the offer]; he had no interest in ... serving in a political capacity.Open history.com (opens in a new tab)
The Israeli government ... offered the presidency to Einstein.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Was this person a scientist or mathematician?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a scientist or mathematician?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was a German mathematician and physicist...Open biography.com (opens in a new tab)
2 · Answer check returns Yes
Q7
1 · Guesser asks
Did this person live before the year 1800?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person live before the year 1800?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was born on March 14, 1879, in Ulm, Württemberg, Germany.Open biography.com (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Was this person primarily a physicist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily a physicist?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was a theoretical physicist and the most famous scientist in human history.Open alberteinstein.com (opens in a new tab)
German-born physicist who developed the special and general theories of relativity and won the Nobel Prize for Physics in 1921.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q9
1 · Guesser asks
Was this person German?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person German?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was born in 1879 in Ulm, Germany. In 1896 he renounced his German citizenship.Open starchild.gsfc.nasa.gov (opens in a new tab)
Albert Einstein ... renounced his German citizenship and immigrated to the United States.Open loc.gov (opens in a new tab)
2 · Answer check returns Yes
Q10
1 · Guesser asks
Was this person awarded the Nobel Prize in Physics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person awarded the Nobel Prize in Physics?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The Nobel Prize in Physics 1921 was awarded to Albert Einstein "for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect".Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Was this person primarily a theoretical physicist rather than an experimental physicist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily a theoretical physicist rather than an experimental physicist?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was a German-born theoretical physicist... known widely for developing the theory of relativity.Open amacad.org (opens in a new tab)
Albert Einstein... was a German-born theoretical physicist... He received the 1921 Nobel Prize in Physics for his services to theoretical physics.Open archives.gov (opens in a new tab)
2 · Answer check returns Yes
Q12
1 · Guesser asks
Is this person most famous for work in quantum mechanics or quantum theory?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person most famous for work in quantum mechanics or quantum theory?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein ... is best known for the special and general theories of relativity and for his bold hypothesis concerning the particle nature of light.Open vision.org (opens in a new tab)
He is best known for his theories on special and general relativity, as well as for the discovery of the photoelectric effect.Open mathshistory.st-andrews.ac.uk (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person born in the 19th century?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the 19th century?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was born on March 14, 1879, in Ulm, Württemberg, Germany.Open biography.com (opens in a new tab)
2 · Answer check returns Yes
Q14
1 · Guesser asks
Did this person develop or significantly contribute to the theory of relativity?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person develop or significantly contribute to the theory of relativity?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
German-born physicist who developed the special and general theories of relativity.Open britannica.com (opens in a new tab)
Einstein was far from being the only person who contributed to the development of the theory of special relativity. However, he was the one who put everything together.Open educationalgames.nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Einstein
German theoretical physicist who developed the theory of relativity and won the 1921 Nobel Prize in Physics
Validator rationale The proposed identity exactly matches Albert Einstein and is consistent with the trusted description.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German theoretical physicist who developed the theory of relativity and won the 1921 Nobel Prize in Physics","name":"Albert Einstein","question":null}} 2 · Validator returns Yes