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 4
Round 4
Identified Albert Schweitzer in 34 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 34
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 18m 18s
- Round cost
- $0.3650 All 35 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":"BYOMPCJW"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Q1
1 · Guesser asks
Is the subject male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject male?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Verdict on Schweitzer: The Man behind the Legend of Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q2
1 · Guesser asks
Is the subject primarily known for entertainment (movies, music, or television)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for entertainment (movies, music, or television)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné (République de Gabon)Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is the subject primarily known for politics or public service?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for politics or public service?"}} 2 · Answer check returns Unknown
Q4
1 · Guesser asks
Is the subject primarily known for sports?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for sports?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was ... awarded the Nobel Peace Prize for 1952, primarily for his work at his hospital at Lambaréné ... which he had founded in 1913.Open lbi.org (opens in a new tab)
His achievements include the establishment of the Albert Schweitzer Hospital in 1913 ... Schweitzer received the Nobel Peace Prize in 1952.Open history.rcp.ac.uk (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Is the subject primarily known for science or technology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for science or technology?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Is the subject primarily known for business or entrepreneurship?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for business or entrepreneurship?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Is the subject primarily known for literature or writing (author, journalist, poet)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for literature or writing (author, journalist, poet)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
An Alsatian-German theologian and physician.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Is the subject primarily known for military service or leadership?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for military service or leadership?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Is the subject primarily known for visual arts (painting, sculpture, or photography)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for visual arts (painting, sculpture, or photography)?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Doctor, Missionary, Philosopher and MusicianOpen nobelprize.org (opens in a new tab)
Albert Schweitzer was an Alsatian born physician, theologian, musician, and philosopher. Winner of the 1952 Nobel Peace PrizeOpen sk.sagepub.com (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Is the subject primarily known for religion or religious leadership?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for religion or religious leadership?"}} 2 · Answer check returns Unknown
Q11
1 · Guesser guesses
Pope Francis
The head of the Catholic Church and sovereign of Vatican City.
Validator rationale The proposal identifies Pope Francis, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"The head of the Catholic Church and sovereign of Vatican City.","name":"Pope Francis","question":null}} 2 · Validator returns No
Q12
1 · Guesser asks
Is the subject primarily known for architecture (building design)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for architecture (building design)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Doctor, Missionary, Philosopher and Musician ... tireless humanitarian work ... built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionary ... nominated for his humanitarian work ... set up a hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Is the subject primarily known for being a public figure in the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for being a public figure in the United States?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The mere mention of the name Schweitzer instantly conjured up images of selflessness, heroism and the very model of a modern, humane physician. Among his many charitable works, Dr. Schweitzer founded a hospital in Lambaréné.Open pbs.org (opens in a new tab)
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Is the subject from Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject from Europe?"}}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
Q15
1 · Guesser asks
Is the subject primarily known for cooking or as a chef?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for cooking or as a chef?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was a physician, Protestant theologian, organist, and missionary, awarded the Nobel Peace Prize primarily for his work at his hospital at Lambaréné.Open lbi.org (opens in a new tab)
Albert Schweitzer was nominated for his humanitarian work... he and his wife set up a hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Is the subject from the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject from the United Kingdom?"}}Oracle evidence2 model-reported sources
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)
Nationality | Germany / FranceOpen newworldencyclopedia.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Is the subject from Western Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject from Western Europe?"}}Oracle evidence2 model-reported sources
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)
Alsace ... enjoys an enviable central position in Western Europe.Open frenchmoments.eu (opens in a new tab)
2 · Answer check returns Yes
Q18
1 · Guesser asks
Is the subject from France?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject from France?"}}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)
Born: 14 January 1875, Kaysersberg, Germany (now France) ... Residence at the time of the award: FranceOpen nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q19
1 · Guesser asks
Is the subject primarily known for film acting?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for film acting?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Doctor, Missionary, Philosopher and Musician... Together with his wife... he built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
Albert Schweitzer is a 1957 American biographical documentary about Albert Schweitzer... Phillip Eckert – Young Albert Schweitzer.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Is the subject primarily known for philosophy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for philosophy?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Dr. Schweitzer became especially famous for giving benefit concerts and lectures in Europe as a means of fundraising for his hospital back in Africa.Open michiganpublic.org (opens in a new tab)
2 · Answer check returns No
Q21
1 · Guesser asks
Is the subject primarily known for music (singing or composing)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for music (singing or composing)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was a physician, Protestant theologian, organist, and missionary, who was awarded the Nobel Peace Prize for 1952, primarily for his work at his hospital at Lambaréné.Open lbi.org (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Is the subject primarily known for fashion design or fashion-related work (clothing or accessories)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for fashion design or fashion-related work (clothing or accessories)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Doctor, Missionary, Philosopher and MusicianOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Is the subject primarily known for politics or public service in France?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for politics or public service in France?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionary. He was nominated for his humanitarian work... In 1913 he arrived at Lambaréné where he and his wife set up a hospital.Open nobelprize.org (opens in a new tab)
Albert Schweitzer was awarded the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q24
1 · Guesser asks
Is the subject primarily known for humanitarian work or charitable activities?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for humanitarian work or charitable activities?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work”Open nobelprize.org (opens in a new tab)
The hospital in Lambaréné became his life’s work. He raised funds for materials, medicine and equipment.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q25
1 · Guesser guesses
Abbé Pierre
French Catholic priest and humanitarian, founder of the Emmaus charity movement helping the homeless.
Validator rationale The proposal identifies Abbé Pierre, a French Catholic priest and humanitarian, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Catholic priest and humanitarian, founder of the Emmaus charity movement helping the homeless.","name":"Abbé Pierre","question":null}} 2 · Validator returns No
Q26
1 · Guesser asks
Is the subject primarily known for founding or leading an international humanitarian organization?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject primarily known for founding or leading an international humanitarian organization?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer ... [was awarded] the Nobel Peace Prize ... primarily for his work at his hospital at Lambaréné ... which he had founded in 1913.Open lbi.org (opens in a new tab)
Doctor, Missionary, Philosopher and Musician ... Together with his wife ... he built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q27
1 · Guesser asks
Is the subject still alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject still 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
Q28
1 · Guesser asks
Did the subject primarily live in the 17th century (1600s)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the subject primarily live in the 17th century (1600s)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer Born: 14 January 1875 ... Died: 4 September 1965Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q29
1 · Guesser asks
Did the subject primarily live in the 19th century (1800s)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the subject primarily live in the 19th century (1800s)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer Born: 14 January 1875 ... Died: 4 September 1965Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q30
1 · Guesser asks
Did the subject primarily live in the 20th century (1900s)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the subject primarily live in the 20th century (1900s)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born 14 January 1875 and died 4 September 1965.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q31
1 · Guesser asks
Did the subject's humanitarian work primarily involve helping refugees or displaced people?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the subject's humanitarian work primarily involve helping refugees or displaced people?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He dedicated himself to medical studies, seeking to build and run a hospital in Africa to alleviate suffering. The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
Schweitzer established a hospital at Lambarene in French Equatorial Africa (Gabon), and spent most of his life there as a doctor, surgeon and administrator in the hospital.Open journalofethics.ama-assn.org (opens in a new tab)
2 · Answer check returns No
Q32
1 · Guesser asks
Is the subject associated with Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the subject associated with Africa?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
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 Yes
Q33
1 · Guesser asks
Did the subject primarily work in Algeria?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the subject primarily work in Algeria?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
In 1913 he arrived at Lambaréné where he and his wife set up a hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q34
1 · Guesser asks
Was the subject primarily a physician who practiced medicine in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the subject primarily a physician who practiced medicine in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was a physician ... awarded the Nobel Peace Prize ... primarily for his work at his hospital at Lambaréné in French Equatorial Africa (Gabon).Open lbi.org (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné (République de Gabon)Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian physician and humanitarian who founded the hospital at Lambaréné in Gabon and won the Nobel Peace Prize.
Validator rationale The proposed identity exactly matches Albert Schweitzer, including the Lambaréné hospital and Nobel Peace Prize distinctions.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian physician and humanitarian who founded the hospital at Lambaréné in Gabon and won the Nobel Peace Prize.","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes