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 21 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 21
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 9m 47s
- Round cost
- $0.7773 All 22 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 the person currently alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person currently alive?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer died on 4 September 1965 at his beloved hospital in Lambaréné, now in independent Gabon.Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer, 90, Dies at His Hospital. He died at 11:30 P.M.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Did the person die before the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person die before the year 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer died on September 4, 1965.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Was the person primarily known as a politician or head of state?
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?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné (République de Gabon).Open nobelprize.org (opens in a new tab)
Albert Schweitzer received the Nobel Peace Prize for his altruism, reverence for life, and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Was the person primarily known for work in the arts or entertainment (e.g., music, film, literature, visual art)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in the arts or entertainment (e.g., music, film, literature, visual art)?"}}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)
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
Q5
1 · Guesser asks
Was the person primarily known as a scientist, inventor, or academic?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a scientist, inventor, or academic?"}}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)
Albert Schweitzer, an Alsatian-German theologian, philosopher, organist, and mission doctor, gained international recognition for his multifaceted work and was awarded the 1952 Nobel Peace Prize.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Was the person primarily known as an athlete or sports figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an athlete or sports figure?"}}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 rests on his 1906 book; he was also recognized internationally as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was the person primarily known as a military leader or soldier?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a military leader or soldier?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné. He received the Nobel Peace Prize for his altruism and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Albert Schweitzer was an Alsatian-German theologian, philosopher, organist, and mission doctor in equatorial Africa.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Was the person primarily known as a religious or spiritual leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a religious or spiritual leader?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer is best known as a great humanitarian... That is one aspect of his life and probably the most well-known. ... he was also known as a theologian.Open equip.org (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
Q9
1 · Guesser asks
Was the person primarily known as a business leader or entrepreneur?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a business leader or entrepreneur?"}}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)
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
Q10
1 · Guesser asks
Was the person primarily known as a social or political activist (e.g., civil rights, independence movements)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a social or political activist (e.g., civil rights, independence movements)?"}}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 mere mention of the name Schweitzer instantly conjured up images of ... the very model of a modern, humane physician.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Was the person primarily known as an explorer, aviator, or astronaut?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an explorer, aviator, or astronaut?"}}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, an Alsatian-German theologian and physician, developed the philosophy of "reverence for life."Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person primarily known as a criminal or for committing crimes?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a criminal or for committing crimes?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer — Facts: Doctor, Missionary, Philosopher and Musician.Open nobelprize.org (opens in a new tab)
The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests; ... recognized as a concert organist, internationally known.Open nobelprize.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
Q13
1 · Guesser asks
Was the person a member of a royal family?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a member of a royal 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)
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
Q14
1 · Guesser asks
Was the person primarily known as a journalist, broadcaster, or television personality?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a journalist, broadcaster, or television personality?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His book, The Quest of the Historical Jesus, established him as a world figure in theological studies. In 1905, he became a mission doctor and established a hospital in Lambaréné.Open britannica.com (opens in a new tab)
Albert Schweitzer was a physician, philosopher, theologian, organist and humanitarian. 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
Q15
1 · Guesser asks
Was the person primarily known for work in law, such as a judge or lawyer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in law, such as a judge or lawyer?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Role: Missionary surgeon; Founder of Lambaréné. The Nobel Prize recognized his altruism, reverence for life, and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
The award 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
Q16
1 · Guesser asks
Was the person a woman?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a woman?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer and his wife Helene, née Bresslau.Open lbi.org (opens in a new tab)
Albert was able to build her a house... with his wife’s resigned consent.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was the person primarily known as a philosopher or thinker?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a philosopher or thinker?"}}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
Q18
1 · Guesser asks
Was the person primarily known for humanitarian work, such as saving or rescuing people?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for humanitarian work, such as saving or rescuing people?"}}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)
Among his many charitable works, Dr. Schweitzer founded a hospital in Lambaréné.Open pbs.org (opens in a new tab)
2 · Answer check returns Yes
Q19
1 · Guesser asks
Is the person known for saving Jews during the Holocaust in World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person known for saving Jews during the Holocaust in World War II?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer’s silence about Nazi persecution of Jews; his failure to speak out publicly against the Nazis’ antisemitism.Open cambridge.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)
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
Q20
1 · Guesser asks
Did the person receive the Nobel Peace Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person receive the 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
Q21
1 · Guesser asks
Was the person a physician (medical doctor)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a physician (medical doctor)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
At Lambaréné, Schweitzer was doctor and surgeon in the hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German physician, theologian, and humanitarian who founded a hospital in Lambaréné, Gabon, and won the 1952 Nobel Peace Prize
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted subject’s identifying description, including his medical, theological, humanitarian, Lambaréné hospital, and 1952 Nobel Peace Prize details.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German physician, theologian, and humanitarian who founded a hospital in Lambaréné, Gabon, and won the 1952 Nobel Peace Prize","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes