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 32 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 32
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 12m 6s
- Round cost
- $0.5633 All 33 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 alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person alive?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: 4 September 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Is the person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person male?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1912 he and Hélène Bresslau were married, and his wife studied nursing to help her husband.Open kids.britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q3
1 · Guesser asks
Was the person a world leader or head of state?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a world leader or head of state?"}}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)
Albert Schweitzer (1875-1965) was a German born physician, theologian, musician, philosopher, and scholar.Open utmb.edu (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Is the person primarily known as a scientist or researcher?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known as a scientist or researcher?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer | Alsatian Theologian, Philosopher & PhysicianOpen 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 nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Is the person primarily known for contributions to the arts (e.g., music, painting, literature)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known for contributions to the arts (e.g., music, painting, literature)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands. He was awarded the Nobel Peace Prize in 1952.Open artuk.org (opens in a new tab)
Schweitzer contributed significantly to the field of medicine and theology... but was also an esteemed organist and musician.Open history.rcp.ac.uk (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Did the person serve in the military?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person serve in the military?"}} 2 · Answer check returns Unknown
Q7
1 · Guesser asks
Was the person an athlete or sports figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person an athlete or sports figure?"}} 2 · Answer check returns Unknown
Q8
1 · Guesser asks
Was the person a business or financial figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a business or financial figure?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer contributed significantly to the field of medicine and theology ... he was also an esteemed organist and musician.Open history.rcp.ac.uk (opens in a new tab)
The theologian, musician, philosopher and Nobel Prize-winning physician Albert SchweitzerOpen history.com (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was the person a religious figure or cleric?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a religious figure or cleric?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Minister turned doctor in Africa; Theologian and philosopher. Albert Schweitzer was a devout Christian.Open nobelprize.org (opens in a new tab)
He was ordained to the Lutheran ministry and became a preacher and a lecturer in philosophy.Open justus.anglican.org (opens in a new tab)
2 · Answer check returns Yes
Q10
1 · Guesser asks
Is the person a Christian religious figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person a Christian religious figure?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was a devout Christian.Open nobelprize.org (opens in a new tab)
He was ordained to the Lutheran ministry and became a preacher and a lecturer in philosophy.Open justus.anglican.org (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Was the person Catholic?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person Catholic?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer, a LutheranOpen openroadmedia.com (opens in a new tab)
Schweitzer, a LutheranOpen archivesspace.columbusstate.edu (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person a key figure in the Protestant Reformation?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a key figure in the Protestant Reformation?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer (1875–1965) was an Alsatian-German theologian, philosopher, and physician.Open britannica.com (opens in a new tab)
The greatest leaders of the Reformation undoubtedly were Martin Luther and John Calvin.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was the person Protestant?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person Protestant?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
A lifelong Lutheran, Schweitzer challenged both the secular and traditional Christian views of Jesus.Open uua.org (opens in a new tab)
He was ordained to the Lutheran ministry and became a preacher and a lecturer in philosophy.Open justus.anglican.org (opens in a new tab)
2 · Answer check returns Yes
Q14
1 · Guesser asks
Was the person active in the 20th century or later?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person active in the 20th century or later?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was awarded the Nobel Peace Prize... Date awarded: 30 October 1953.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q15
1 · Guesser asks
Was the person American?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person American?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Although Schweitzer considered himself French — and would formally take French citizenship after World War IOpen mayoclinicproceedings.org (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was the person European?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person European?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born in Kaysersberg, Upper Alsace, Germany (now Haut-Rhin Department, France).Open age-of-the-sage.org (opens in a new tab)
Albert Schweitzer was born ... in Upper Alsace, North Eastern France.Open philosophynow.org (opens in a new tab)
2 · Answer check returns Yes
Q17
1 · Guesser asks
Was the person a theologian?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a theologian?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Theologian and philosopherOpen nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q18
1 · Guesser asks
Is the person German?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person German?"}} 2 · Answer check returns Unknown
Q19
1 · Guesser asks
Was the person Swiss?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person Swiss?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer considered himself French — and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
During World War I Schweitzer and his wife, though French, were interned in France as German subjects.Open kids.britannica.com (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Was the person executed?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person executed?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer died last night in his jungle hospital here. He was 90 years old. His death was attributed to circulatory trouble brought on by his advanced age.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns No
Q21
1 · Guesser asks
Was the person British?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person British?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
During World War I Schweitzer and his wife, though French, were interned in France as German subjects.Open kids.britannica.com (opens in a new tab)
Schweitzer considered himself French — and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Was the person Dutch?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person Dutch?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Although Schweitzer considered himself French — and would formally take French citizenship after World War IOpen mayoclinicproceedings.org (opens in a new tab)
Albert Schweitzer ... was a German—and later French—theologianOpen openroadmedia.com (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Was the person French?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person French?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer considered himself French — and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
During World War I Schweitzer and his wife, though French, were interned in France as German subjects.Open kids.britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q24
1 · Guesser guesses
Jacques Ellul
French Protestant theologian and philosopher known for works on technology and Christian anarchism
Validator rationale The proposal identifies Jacques Ellul, a different person from the trusted subject Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Protestant theologian and philosopher known for works on technology and Christian anarchism","name":"Jacques Ellul","question":null}} 2 · Validator returns No
Q25
1 · Guesser asks
Was the person born before 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born before 1900?"}}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 Yes
Q26
1 · Guesser asks
Was the person born in the 19th century?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born in the 19th century?"}}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 Yes
Q27
1 · Guesser asks
Was the person born before 1850?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born before 1850?"}}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
Q28
1 · Guesser asks
Was the person born after 1860?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born after 1860?"}}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 Yes
Q29
1 · Guesser guesses
Wilfred Monod
French Protestant theologian and pastor born in 1867, known for his work in Christian ethics and ecumenism
Validator rationale The proposal identifies Wilfred Monod, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Protestant theologian and pastor born in 1867, known for his work in Christian ethics and ecumenism","name":"Wilfred Monod","question":null}} 2 · Validator returns No
Q30
1 · Guesser asks
Was the person associated with the Reformed (Calvinist) tradition?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person associated with the Reformed (Calvinist) tradition?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
A lifelong Lutheran, Schweitzer challenged both the secular and traditional Christian views of Jesus.Open uua.org (opens in a new tab)
Lutheran faith influenced his mission of healing and “reverence for life.”Open journalofethics.ama-assn.org (opens in a new tab)
2 · Answer check returns No
Q31
1 · Guesser asks
Was the person associated with the Lutheran tradition?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person associated with the Lutheran tradition?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... was the son of a Lutheran minister and member of a family of ministers.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
Albert Schweitzer was born ... the son of a Lutheran pastor.Open snaccooperative.org (opens in a new tab)
2 · Answer check returns Yes
Q32
1 · Guesser guesses
Marc Boegner
French Lutheran pastor and theologian, president of the Protestant Federation of France and ecumenical leader
Validator rationale The proposal identifies Marc Boegner, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Lutheran pastor and theologian, president of the Protestant Federation of France and ecumenical leader","name":"Marc Boegner","question":null}} 2 · Validator returns No
G
1 · Guesser guessesNot counted
Albert Schweitzer
French Alsatian Lutheran theologian, philosopher, and physician, Nobel Peace Prize winner known for 'The Quest of the Historical Jesus'
Validator rationale The proposed identity names Albert Schweitzer, matching the trusted subject; the description is consistent with his known roles and work.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Alsatian Lutheran theologian, philosopher, and physician, Nobel Peace Prize winner known for 'The Quest of the Historical Jesus'","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes