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 5
Round 5
Identified Albert Schweitzer in 28 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 28
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 12m 53s
- Round cost
- $1.1136 All 29 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":"XSZW5TRZ"}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.Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer, 90, Dies at His Hospital.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 for work in politics or government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in politics or government?"}}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 The Quest of the Historical Jesus; he was also internationally known as a concert organist and worked as a physician in Africa.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.
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
Q5
1 · Guesser asks
Was the person primarily known for work in science, mathematics, or medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in science, mathematics, or medicine?"}}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
Q6
1 · Guesser asks
Was the person primarily known as an athlete or for involvement in sports?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an athlete or for involvement in sports?"}}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 The Quest of the Historical Jesus; he was also internationally known 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 for work in business or as an entrepreneur?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work in business or as an entrepreneur?"}}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 ... gained international recognition for his multifaceted work and was awarded the 1952 Nobel Peace Prize for his efforts on behalf of “the Brotherhood of Nations”.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Was the person primarily known for religious or spiritual leadership?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for religious or spiritual leadership?"}}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)
Having decided to go to Africa as a medical missionary rather than as a pastor, Schweitzer began the study of medicine.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was the person primarily known for military service or as a military leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for military service or as a military leader?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His 1906 book was one on which much of his fame as a theological scholar rests; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné. Prize motivation: his altruism, reverence for life, and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was the person primarily known as an activist or for social/civil rights advocacy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an activist or for social/civil rights advocacy?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His theological work, The Quest of the Historical Jesus, was a book on which much of his fame as a theological scholar rests; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
His theological work established him as a world figure; he was also an accomplished musician and a mission doctor who built and maintained a hospital in Gabon.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Was the person primarily known as an explorer, adventurer, or aviator?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an explorer, adventurer, or aviator?"}}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 “for his altruism, reverence for life, and tireless humanitarian work.”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; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person primarily known for committing crimes or being a criminal?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for committing crimes or being a criminal?"}}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 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 as a scholar, philosopher, or academic in the humanities or social sciences?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a scholar, philosopher, or academic in the humanities or 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)
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
Q14
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?"}} 2 · Answer check returns Unknown
Q15
1 · Guesser asks
Is the person primarily known because of a specific event they were involved in (such as a disaster, crime victimhood, or a famous incident) rather than a career?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known because of a specific event they were involved in (such as a disaster, crime victimhood, or a famous incident) rather than a career?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Much of his fame as a theological scholar rests on his 1906 book, The Quest of the Historical Jesus; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
Dr. Schweitzer was a renowned medical missionary whose charitable works included founding a hospital in Lambaréné.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was the person primarily known as a journalist, broadcaster, or media personality?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a journalist, broadcaster, or media personality?"}}Oracle evidence3 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 ... gained international recognition for his multifaceted work and was awarded the 1952 Nobel Peace Prize for his efforts on behalf of “the Brotherhood of Nations.”Open britannica.com (opens in a new tab)
Albert Schweitzer was known as a clergyman and musician ... As a medical missionary he set up a tiny hospital in Lambaréné.Open kids.britannica.com (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was the person primarily known as an inventor or engineer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an inventor or engineer?"}}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
Q18
1 · Guesser asks
Was the person primarily known as an architect, designer, or in fashion?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an architect, designer, or in fashion?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Much of his fame as a theological scholar rests on his 1906 book, The Quest of the Historical Jesus; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q19
1 · Guesser asks
Was the person primarily known for work in law, such as a lawyer or judge?
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 lawyer or judge?"}}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)
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)
2 · Answer check returns No
Q20
1 · Guesser asks
Is the person primarily known because of a family relationship or marriage to a more famous person?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known because of a family relationship or marriage to a more famous person?"}}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”; Role: Missionary surgeon; Founder of Lambaréné.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; he was also recognized as an internationally known concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q21
1 · Guesser asks
Was the person primarily known for playing a game such as chess, poker, or bridge?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for playing a game such as chess, poker, or bridge?"}}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)
His fame as a theological scholar rested on his 1906 book The Quest of the Historical Jesus; he was also recognized internationally as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Was the person primarily known for espionage or intelligence work (e.g., a spy)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for espionage or intelligence work (e.g., a spy)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His fame as a theological scholar rests on The Quest of the Historical Jesus; he was also recognized as an internationally known concert organist.Open nobelprize.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
Q23
1 · Guesser asks
Was the person primarily known for work related to food, such as a chef, cook, or culinary personality?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for work related to food, such as a chef, cook, or culinary personality?"}}Oracle evidence3 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 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, philosopher, organist, and mission doctor, [he] gained international recognition for his multifaceted work and was awarded the 1952 Nobel Peace Prize for his efforts on behalf of “the Brotherhood of Nations”.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q24
1 · Guesser asks
Is the person primarily known for a physical trait or record, such as extreme age, height, or weight?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known for a physical trait or record, such as extreme age, height, or weight?"}}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)
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
Q25
1 · Guesser asks
Was the person primarily known for humanitarian work, such as rescuing or saving people, nursing, or philanthropy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for humanitarian work, such as rescuing or saving people, nursing, or philanthropy?"}}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)
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 Yes
Q26
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.
With his wife, Hélène Bresslau, he constructed a hospital on the banks of the Ogooué River.Open britannica.com (opens in a new tab)
Role: Missionary surgeon; Founder of Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q27
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 1952. Albert Schweitzer received his Nobel Prize one year later, in 1953.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q28
1 · Guesser guesses
Henri Dunant
Swiss humanitarian, founder of the Red Cross and co-recipient of the first Nobel Peace Prize in 1901
Validator rationale The proposal identifies Henri Dunant, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Swiss humanitarian, founder of the Red Cross and co-recipient of the first Nobel Peace Prize in 1901","name":"Henri Dunant","question":null}} 2 · Validator returns No
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German humanitarian and medical missionary who founded the hospital at Lambaréné, Gabon, and won the 1952 Nobel Peace Prize
Validator rationale The proposed identity exactly matches Albert Schweitzer and the trusted identifying details, including the Lambaréné hospital and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German humanitarian and medical missionary who founded the hospital at Lambaréné, Gabon, and won the 1952 Nobel Peace Prize","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes