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 22 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 22
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 8m 58s
- Round cost
- $0.8270 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":"XSZW5TRZ"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Q1
1 · Guesser asks
Is this person alive today?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person alive today?"}}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 this person born before 1800?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 1800?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
I was born on 14 January 1875 in Kaysersberg, in Upper Alsace.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Is this person primarily known for work in the arts, such as writing, music, acting, or visual art?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person primarily known for work in the arts, such as writing, music, acting, or 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
Q4
1 · Guesser asks
Did this person hold a major political office or lead a national government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person hold a major political office or lead a national government?"}} 2 · Answer check returns Unknown
Q5
1 · Guesser asks
Is this person known for contributions to science, mathematics, or invention?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for contributions to science, mathematics, or invention?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests. ... Schweitzer ... was recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
Schweitzer's ... accomplishments [were] in four major disciplines (theology, philosophy, musicology, and medicine) ... his single greatest contribution to humankind was ... Reverence for Life.Open journals.uts.edu (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Was this person born in the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the United States?"}}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 in France), on January 14, 1875.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Is this person known for religious leadership or social activism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for religious leadership or social activism?"}}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)
Schweitzer was an Alsatian-German theologian... and mission doctor in equatorial Africa. He received the 1952 Nobel Prize for Peace for his work on behalf of the “Brotherhood of Nations.”Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q8
1 · Guesser asks
Was this person born in Asia?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Asia?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born in Kaysersberg, Alsace, in 1875.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person a woman?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a woman?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... was a German polymath from Alsace. He was a theologian, organist, musicologist, writer, humanitarian, philosopher, and physician.Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer (January 14, 1875-September 4, 1965) was born into an Alsatian family...Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person a Christian religious leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a Christian religious leader?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
By the time he was 30 years old, Schweitzer was known as a clergyman and musician. He was head of a theological college, pastor of a large church.Open kids.britannica.com (opens in a new tab)
He was a preacher at St. Nicholas’ Church and received a doctorate in theology.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Did this person serve as pope of the Roman Catholic Church?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person serve as pope of the Roman Catholic Church?"}}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. As a Lutheran minister...Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer ... received his licentiate in theology in 1900. He began preaching at St. Nicholas Church in Strasbourg in 1899.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was this person born in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
I was born on 14 January 1875 in Kaysersberg, in Upper Alsace.Open schweitzer.org (opens in a new tab)
Schweitzer, born in Kaysersberg, Alsace, [then Imperial Germany, now Haut-Rhin département, France].Open journals.uts.edu (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person a Roman Catholic priest or bishop?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a Roman Catholic priest or bishop?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
As a Lutheran minister, Schweitzer challenged both the secular view of the historical Jesus...Open en.wikipedia.org (opens in a new tab)
Schweitzer ... was also a lecturer in philosophy and a preacher at St. Nicholas’ Church.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Was this person born in the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the United Kingdom?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
I was born on 14 January 1875 in Kaysersberg, in Upper Alsace.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person imprisoned by Nazi authorities?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person imprisoned by Nazi authorities?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
After a brief period of imprisonment as a prisoner of war in a French internment camp between 1917–1918.Open history.rcp.ac.uk (opens in a new tab)
From 1939 to 1948 he stayed in Lambaréné, unable to go back to Europe during the war.Open newworldencyclopedia.org (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was this person born in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this 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 in France), on January 14, 1875.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q17
1 · Guesser asks
Was this person associated with Protestant Christianity?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person associated with Protestant Christianity?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Dr. Albert Schweitzer was the preeminent Christian medical missionary in Africa, a towering figure in twentieth-century Protestant thought and philosophy.Open dacb.org (opens in a new tab)
Schweitzer was born in a Lutheran parsonage... In 1900 a doctorate in theology from Strassburg.Open encyclopedia.com (opens in a new tab)
2 · Answer check returns Yes
Q18
1 · Guesser asks
Was this person born in what is now Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in what is now Germany?"}}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
Q19
1 · Guesser asks
Was this person born in Switzerland?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Switzerland?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was born on 14 January 1875 in Kaysersberg in Alsace, in what had less than four years previously become the Imperial Territory of Alsace-Lorraine in the German Empire.Open en.wikipedia.org (opens in a new tab)
Albert was born in 1875 in Kaysersberg (Alsace-Lorraine), Germany, (now Haut-Rhin, France).Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Was this person born in a Scandinavian country?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in a Scandinavian country?"}}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
Q21
1 · Guesser asks
Was this person born in the Netherlands?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the Netherlands?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
I was born on 14 January 1875 in Kaysersberg, in Upper Alsace.Open schweitzer.org (opens in a new tab)
Albert was born in 1875 in Kaysersberg (Alsace-Lorraine), Germany, (now Haut-Rhin, France).Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Did this person provide medical care or establish a hospital in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person provide medical care or establish a hospital in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Dr. Schweitzer founded a hospital in Lambaréné, situated in what was then French Equatorial Africa and is today Gabon.Open pbs.org (opens in a new tab)
The Hôpital Albert Schweitzer was established in 1913 by Albert Schweitzer and Helene Bresslau Schweitzer in Lambaréné, Gabon.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian Protestant theologian, physician, and Nobel Peace Prize laureate who founded a hospital in Lambaréné, Gabon.
Validator rationale The proposed identity exactly matches Albert Schweitzer and aligns with the trusted description, including his medical, theological, Nobel, and Lambaréné hospital associations.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian Protestant theologian, physician, and Nobel Peace Prize laureate who founded a hospital in Lambaréné, Gabon.","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes