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 35 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 35
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 9m 46s
- Round cost
- $0.4303 All 36 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 person currently living?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person currently living?"}}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 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Was the person a man?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a man?"}}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
Q3
1 · Guesser asks
Was he born before 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he born before 1900?"}}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
Q4
1 · Guesser asks
Was he primarily known for political leadership or government service?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for political leadership or government service?"}}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)
Schweitzer contributed significantly to the field of medicine and theology... He was also an esteemed organist and musician... [and] established the Albert Schweitzer Hospital.Open history.rcp.ac.uk (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Was he primarily known for achievements in science, mathematics, or engineering?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for achievements in science, mathematics, or engineering?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... devoted his life to humanitarian aid and the promotion of peace. ... he is best known for his medical work.Open kaysersberg.com (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
Was he primarily known for work in the arts, such as literature, music, painting, or film?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for work in the arts, such as literature, music, painting, or film?"}}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
Was he primarily known for military service or military leadership?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for military service or military 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 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
Q8
1 · Guesser asks
Was he primarily known for achievements in sports or athletic competition?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for achievements in sports or athletic competition?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Doctor, Missionary, Philosopher and Musician ... Albert Schweitzer received the Nobel Prize ... for his tireless humanitarian work.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
Q9
1 · Guesser asks
Was he primarily known for religious leadership or religious teaching?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for religious leadership or religious teaching?"}}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)
Profession: Missionary, Surgeon; Motivation: Founder Lambaréné Hospital, Gabon.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was he primarily known for business, entrepreneurship, or industry?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for business, entrepreneurship, or industry?"}}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)
Doctor, Missionary, Philosopher and Musician... 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
Q11
1 · Guesser asks
Was he primarily known as an explorer, navigator, or geographic discoverer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known as an explorer, navigator, or geographic discoverer?"}}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
Q12
1 · Guesser asks
Was he primarily known for criminal activity or as an outlaw?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for criminal activity or as an outlaw?"}}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)
Minister turned doctor in Africa; Theologian and philosopher.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was he primarily known for philosophical thought, social theory, or intellectual writing?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for philosophical thought, social theory, or intellectual writing?"}}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
Q14
1 · Guesser asks
Was he primarily known for medical practice or medical discoveries?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for medical practice or medical discoveries?"}}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)
Together with his wife, who was a nurse, 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 Yes
Q15
1 · Guesser asks
Was he born in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he born in 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
Q16
1 · Guesser asks
Was he born before 1800?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he born before 1800?"}}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 No
Q17
1 · Guesser asks
Did he receive a Nobel Prize in Physiology or Medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did he receive a Nobel Prize in Physiology or Medicine?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Nobel Peace Prize 1952 — Albert SchweitzerOpen nobelprize.org (opens in a new tab)
Nobel Prize in Physiology or Medicine 1952: Selman A. Waksman; Nobel Peace Prize 1952: Albert SchweitzerOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q18
1 · Guesser asks
Was he born in the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he born in the United Kingdom?"}}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 No
Q19
1 · Guesser asks
Was he born in Austria?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he born in Austria?"}}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 No
Q20
1 · Guesser asks
Was he born in Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he 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
Q21
1 · Guesser asks
Was he primarily known for contributions to psychiatry or neurology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for contributions to psychiatry or neurology?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was renowned in the twentieth century as a humanitarian and advocate of peace; he received the 1952 Nobel Peace Prize for founding the Lambaréné Hospital and serving as its physician.Open newworldencyclopedia.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
Q22
1 · Guesser asks
Was he primarily known as a surgeon?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known as a surgeon?"}}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 founded a hospital in Lambaréné... In 1952, he won the Nobel Peace Prize.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Was he primarily known for microbiology or the study of infectious diseases?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for microbiology or the study of infectious diseases?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was nominated for his humanitarian work on a religious basis... he and his wife set up a hospital.Open nobelprize.org (opens in a new tab)
Schweitzer contributed significantly to the field of medicine and theology... he was also an esteemed organist and musician.Open history.rcp.ac.uk (opens in a new tab)
2 · Answer check returns No
Q24
1 · Guesser asks
Was he primarily known for pathology or pathological anatomy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for pathology or pathological anatomy?"}}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)
Schweitzer became well known for his books on Jesus and Christianity.Open simple.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q25
1 · Guesser asks
Was he primarily known for contributions to human physiology or medical physiology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for contributions to human physiology or medical physiology?"}}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)
Doctor, Missionary, Philosopher and MusicianOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q26
1 · Guesser asks
Was he primarily known for pharmacology, toxicology, or the development of medicines?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for pharmacology, toxicology, or the development of medicines?"}}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)
Schweitzer contributed significantly to the field of medicine and theology... he was also an esteemed organist and musician.Open history.rcp.ac.uk (opens in a new tab)
2 · Answer check returns No
Q27
1 · Guesser asks
Was he primarily known for dermatology or the treatment of skin diseases?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for dermatology or the treatment of skin diseases?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was ... renowned in the twentieth century as a humanitarian and advocate of peace.Open newworldencyclopedia.org (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q28
1 · Guesser asks
Was he primarily known for contributions to ophthalmology or eye medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for contributions to ophthalmology or eye medicine?"}}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.Open lbi.org (opens in a new tab)
The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q29
1 · Guesser asks
Was he primarily known for obstetrics or gynecology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for obstetrics or gynecology?"}}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)
From his young manhood to his middle eighties, [he was] recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q30
1 · Guesser asks
Was he primarily known for contributions to pediatrics or the care of children?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for contributions to pediatrics or the care of children?"}}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)
Schweitzer is often remembered as a Nobel Prize laureate... renowned worldwide as a physician who delivered medical care in areas of Africa that were bereft of such care.Open medicine.hms.harvard.edu (opens in a new tab)
2 · Answer check returns No
Q31
1 · Guesser asks
Was he primarily known for anatomical research or teaching anatomy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for anatomical research or teaching anatomy?"}}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)
Together with his wife, who was a nurse, 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
Q32
1 · Guesser asks
Was he primarily known for dentistry or dental medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for dentistry or dental medicine?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Doctor, Missionary, Philosopher and Musician... he built and ran a hospital at the mission station Lambarene in Gabon.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
Q33
1 · Guesser asks
Was he primarily known for internal medicine or the treatment of diseases of internal organs?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for internal medicine or the treatment of diseases of internal organs?"}}Oracle evidence3 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)
Schweitzer ... 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
Q34
1 · Guesser asks
Was he primarily known for public health, epidemiology, or hygiene?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was he primarily known for public health, epidemiology, or hygiene?"}}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 Musician ... 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
Q35
1 · Guesser asks
Did he receive the Nobel Peace Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did he receive the Nobel Peace 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 ... Albert Schweitzer received his Nobel Prize one year later, in 1953.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
German physician and medical missionary, known for founding a hospital in Lambaréné and receiving the 1952 Nobel Peace Prize.
Validator rationale The proposed identity exactly matches Albert Schweitzer, including the Lambaréné hospital and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German physician and medical missionary, known for founding a hospital in Lambaréné and receiving the 1952 Nobel Peace Prize.","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes