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 14 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 14
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 4m 28s
- Round cost
- $0.2962 All 15 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 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 died on September 4, 1965, at the age of 90.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns Yes
Q3
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
Q4
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.
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 the person primarily known for their work in politics or government as a politician, monarch, or head of state?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for their work in politics or government as a politician, monarch, or head of state?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer went to Lambaréné in 1913 to work as a mission doctor and constructed a hospital, aiming to provide medical care and devote himself to philanthropic work.Open britannica.com (opens in a new tab)
Schweitzer held organ concerts internationally to finance his studies and raise funds for his hospital in Africa.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
Q6
1 · Guesser asks
Was the person primarily known for their 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 their work in science, mathematics, or technology?"}}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
Q7
1 · Guesser asks
Was the person primarily known for their work in the arts, such as literature, visual arts, music, or cinema?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for their work in the arts, such as literature, visual arts, music, or cinema?"}}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
Q8
1 · Guesser asks
Was the person primarily associated with military leadership or warfare?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily associated with military leadership or warfare?"}}Oracle evidence3 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 (1875-1965) was an Alsatian-German theologian, philosopher, organist, and mission doctor in equatorial Africa.Open britannica.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 peaceprizelaureates.nobelpeacecenter.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was the person primarily known for their work in 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 their work in philosophy, psychology, or the social sciences?"}}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
Q10
1 · Guesser asks
Was the person primarily known for religious, spiritual, or humanitarian activities?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for religious, spiritual, or humanitarian activities?"}}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.Open equip.org (opens in a new tab)
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)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Was the person female?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person female?"}}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) ... he was ... recognized as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person awarded a Nobel Peace Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person awarded a 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 "for his altruism, reverence for life, and tireless humanitarian work which has helped making the idea of brotherhood between men and nations a living one"Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q13
1 · Guesser asks
Did the person die after January 1, 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person die after January 1, 1950?"}}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
Q14
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 evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer | Alsatian Theologian, Philosopher & Physician; he went to Lambaréné in 1913 to work as a mission doctor.Open britannica.com (opens in a new tab)
Dr. Albert Schweitzer, a renowned medical missionary; the model of a modern, humane physician.Open pbs.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German polymath, theologian, organist, medical missionary, and Nobel Peace Prize laureate
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted subject's defining description.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German polymath, theologian, organist, medical missionary, and Nobel Peace Prize laureate","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes