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 2
Round 2
Identified Albert Schweitzer in 22 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 22
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 8m 10s
- Round cost
- $0.5821 All 23 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":"BKXG3AZI"}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 alive today?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person alive today?"}}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
Q2
1 · Guesser asks
Did the person die after January 1, 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person die after January 1, 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)Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q3
1 · Guesser asks
Was the person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person male?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He was a theologian, organist, musicologist, writer, humanitarian, philosopher, and physician.Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer – BiographicalOpen nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Was the person a citizen of the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a citizen of the United States?"}}Oracle evidence1 model-reported source
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)
2 · Answer check returns No
Q5
1 · Guesser asks
Was the person born in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born in Europe?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born in Kaysersberg, Upper Alsace, Germany (now a part of France).Open ebsco.com (opens in a new tab)
2 · Answer check returns Yes
Q6
1 · Guesser asks
Was the person primarily known as a politician or head of state/government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a politician or head of state/government?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was an Alsatian-German theologian and physician who developed the philosophy of “reverence for life.”Open britannica.com (opens in a new tab)
Dr. Schweitzer founded a hospital in Lambaréné and in 1952 won the Nobel Peace Prize.Open pbs.org (opens in a new tab)
At Lambaréné, Schweitzer was doctor and surgeon in the hospital, pastor of a congregation, administrator of a village, writer, and musician.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was the person primarily known for work in science, mathematics, or technology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in science, mathematics, or technology?"}}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
Q8
1 · Guesser asks
Was the person primarily known for creative work in literature, visual art, music, or cinema?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for creative work in literature, visual art, music, or cinema?"}}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)
The award to Albert Schweitzer of the Nobel Peace Prize symbolized the near-universal admiration he attained through his life of devotion as a medical missionary in Africa.Open ebsco.com (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was the person primarily known for contributions to philosophy, psychology, or the social sciences?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for contributions to philosophy, psychology, or the social sciences?"}}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)
He was German and French and is known for his charitable work including opening a hospital in Africa.Open michiganpublic.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was the person primarily known for their military career, military leadership, or combat service?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for their military career, military leadership, or combat service?"}}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)
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 No
Q11
1 · Guesser asks
Was the person primarily known for achievements in sports or athletic competition?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person 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.
At Lambaréné, Schweitzer was doctor and surgeon in the hospital, pastor of a congregation, administrator of a village, ... writer ... musician. The Nobel Peace Prize for 1952 ... was given to him.Open nobelprize.org (opens in a new tab)
For his medical and humanitarian works, Schweitzer won many awards, including ... the Nobel Peace Prize.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person primarily known for exploration, aviation, mountaineering, or polar expeditions?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for exploration, aviation, mountaineering, or polar expeditions?"}}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)
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
Q13
1 · Guesser asks
Was the person primarily known for business, industry, or commerce?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for business, industry, or commerce?"}}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)
Albert Schweitzer ... was an Alsatian-German theologian, philosopher, organist, and mission doctor in equatorial Africa. He received the 1952 Nobel Prize for Peace.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Was the person primarily associated with religion or a religious institution?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily associated with religion or a religious institution?"}}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)
Albert Schweitzer is best known as a great humanitarian... He established a hospital and treated the natives there.Open equip.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was the person a member of a royal or noble family?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a member of a royal or noble family?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born into an Alsatian family devoted to religion, music, and education; his father and maternal grandfather were ministers.Open nobelprize.org (opens in a new tab)
Albert Schweitzer was the son of a Lutheran minister and a member of a family of ministers, scholars and musicians.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was the person primarily known for involvement in espionage, criminal activity, or an assassination?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for involvement in espionage, criminal activity, or an assassination?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
At Lambaréné, Schweitzer was doctor and surgeon in the hospital, pastor of a congregation, administrator of a village, writer, and musician. He received the Nobel Peace Prize for 1952.Open nobelprize.org (opens in a new tab)
Albert Schweitzer, a renowned medical missionary. Dr. Schweitzer founded a hospital in Lambaréné, and in 1952 he won the Nobel Peace Prize.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was the person known for humanitarian work, philanthropy, or saving human lives?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person known for humanitarian work, philanthropy, or saving human lives?"}}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. He raised funds for materials, medicine and equipment. He also donated all his prize money to the hospital.Open nobelprize.org (opens in a new tab)
In 1913, almost 100 years ago, he and his wife set out and began a 50 year commitment to creating, rebuilding, and running a unique hospital.Open berkleycenter.georgetown.edu (opens in a new tab)
2 · Answer check returns Yes
Q18
1 · Guesser asks
Is the person primarily known for actions during World War II or the Holocaust?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known for actions during World War II or the Holocaust?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Dr. Schweitzer founded a hospital in Lambaréné, international best-selling book. In 1952, he won the Nobel Peace Prize.Open pbs.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. This effort became an example to others.Open nobelprize.org (opens in a new tab)
Having decided to go to Africa as a medical missionary rather than as a pastor, Schweitzer ... founded his hospital at Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q19
1 · Guesser asks
Did the person receive a Nobel Peace Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person receive a Nobel Peace Prize?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer — Nobel Peace Prize 1952Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q20
1 · Guesser asks
Was the person a founder or prominent figure of the Red Cross movement?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a founder or prominent figure of the Red Cross movement?"}} 2 · Answer check returns Unknown
Q21
1 · Guesser asks
Did the person win the Nobel Peace Prize after 1940?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person win the Nobel Peace Prize after 1940?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Nobel Peace Prize 1952 was awarded to Albert Schweitzer.Open nobelprize.org (opens in a new tab)
Albert Schweitzer — Nobel Peace Prize 1952.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q22
1 · Guesser asks
Was the person a medical doctor or physician?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a medical doctor or physician?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; ... Doctor, Missionary, Philosopher and MusicianOpen nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian polymath, physician, and humanitarian who won the 1952 Nobel Peace Prize
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted description, including his Alsatian background, medical and humanitarian roles, and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian polymath, physician, and humanitarian who won the 1952 Nobel Peace Prize","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes