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 Schweitzer in 26 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 26
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 16m 46s
- Round cost
- $1.1598 All 27 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 currently alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person currently alive?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: 4 September 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Did this person die after the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die after the year 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: Sept. 4, 1965, Lambaréné, Gabon (aged 90)Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q3
1 · Guesser asks
Was this person a citizen of the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a citizen of the United States?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer, born a German citizen, had his parents' former pre-1871 French citizenship reinstated, and became a French citizen.Open en.wikipedia.org (opens in a new tab)
The French media were quick to highlight his French citizenship.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Was this person born in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Europe?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer — Born: 14 January 1875, Kaysersberg, Germany (now France).Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q5
1 · Guesser asks
Was this person ever a head of state or head of government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person ever a head of state or head of government?"}} 2 · Answer check returns Unknown
Q6
1 · Guesser asks
Did this person die before the year 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before the year 1950?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: Sept. 4, 1965, Lambaréné, Gabon (aged 90).Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was this person primarily known as a politician or statesman?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a politician or statesman?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1906 he published The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests.Open nobelprize.org (opens in a new tab)
From his professional engagements he earned funds for his education, particularly his later medical schooling, and for his African hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Was this person primarily known for work in science, mathematics, or technology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for work in science, mathematics, or technology?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is renowned for his theological work, The Quest of the Historical Jesus.Open britannica.com (opens in a new tab)
Much of his fame as a theological scholar rests on The Quest of the Historical Jesus.Open nobelprize.org (opens in a new tab)
By the time he was 30 years old, Albert Schweitzer was known as a clergyman and musician.Open kids.britannica.com (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person primarily known as an artist, writer, musician, or entertainer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as an artist, writer, musician, or entertainer?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné. Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work.”Open nobelprize.org (opens in a new tab)
His theological work, The Quest of the Historical Jesus, established him as a world figure; in 1905, Schweitzer became a mission doctor.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person a member of a royal, noble, or aristocratic family?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a member of a royal, noble, or aristocratic family?"}} 2 · Answer check returns Unknown
Q11
1 · Guesser asks
Was this person primarily known for their military career or achievements?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their military career or achievements?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné. Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work.”Open nobelprize.org (opens in a new tab)
He dedicated himself to medical studies, seeking to build and run a hospital in Africa... The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was this person female?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person female?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1917 he and his wife were sent to a French internment camp as prisoners of war.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person primarily known for their involvement in sports or athletics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their involvement in sports or athletics?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné. Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work.”Open nobelprize.org (opens in a new tab)
Much of his fame as a theological scholar rested on his book The Quest of the Historical Jesus; he was also recognized internationally as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Was this person primarily known for their work in business, commerce, or industry?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their work in business, commerce, or industry?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests.Open nobelprize.org (opens in a new tab)
Musician, theologian and physician, Albert Schweitzer was above all, a true humanitarian.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person primarily known for their work in philosophy, education, or the humanities?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their work in philosophy, education, or the humanities?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Musician, theologian and physician, Albert Schweitzer was above all, a true humanitarian.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné. Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work.”Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was this person primarily known as a religious figure or leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a religious figure or leader?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was an Alsatian-German theologian, philosopher, organist, and mission doctor. His theological work, The Quest of the Historical Jesus, established him as a world figure.Open britannica.com (opens in a new tab)
The Quest of the Historical Jesus was a book on which much of his fame as a theological scholar rests.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was this person involved in aviation or spaceflight?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person involved in aviation or spaceflight?"}} 2 · Answer check returns Unknown
Q18
1 · Guesser asks
Did this person die after the year 1980?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die after the year 1980?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer died on September 4, 1965, and was buried at Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q19
1 · Guesser asks
Was this person known for working as a diplomat?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for working as a diplomat?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné.Open nobelprize.org (opens in a new tab)
An Alsatian-German theologian, philosopher, organist, and mission doctor.Open britannica.com (opens in a new tab)
Schweitzer dedicated the last six decades of his life to medicine and to a hospital he founded.Open press.jhu.edu (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Was this person born in the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the United Kingdom?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Born: 14 January 1875, Kaysersberg, Germany (now France)Open nobelprize.org (opens in a new tab)
Albert Schweitzer was born in Kaysersberg, Upper Alsace, Germany (now in France), on January 14, 1875.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q21
1 · Guesser asks
Was this person born in Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Germany?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Born: 14 January 1875, Kaysersberg, Germany (now France)Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q22
1 · Guesser asks
Was this person a member of the Nazi Party?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a member of the Nazi Party?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He refused to cooperate with the Nazis and refused to return to Germany as long as Hitler remained in power.Open academic.oup.com (opens in a new tab)
Not a friend of the Nazis — but oddly silent about the Holocaust.Open dw.com (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Was this person born before the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before the year 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer (January 14, 1875-September 4, 1965) was born into an Alsatian family.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q24
1 · Guesser asks
Was this person imprisoned in a Nazi concentration camp?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person imprisoned in a Nazi concentration camp?"}} 2 · Answer check returns Unknown
Q25
1 · Guesser asks
Was this person a physician, surgeon, or medical doctor?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a physician, surgeon, or medical doctor?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
At Lambaréné, he was doctor and surgeon in the hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q26
1 · Guesser asks
Was this person awarded a Nobel Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person awarded a Nobel Prize?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The Nobel Peace Prize 1952 was awarded to Albert Schweitzer "for his altruism, reverence for life, and tireless humanitarian work."Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German polymath, physician, theologian, and 1952 Nobel Peace Prize laureate
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted description, including his professions and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German polymath, physician, theologian, and 1952 Nobel Peace Prize laureate","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes