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 37 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 37
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 22m 55s
- Round cost
- $1.4899 All 38 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 currently alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person currently alive?"}}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.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Was this person born in or after the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in or after the year 1900?"}}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) was born into an Alsatian family.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q3
1 · Guesser asks
Was this person born in or after the year 1800?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in or after the year 1800?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer, born on January 14, 1875 in Alsace, Germany (now a part of France).Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns Yes
Q4
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
Q5
1 · Guesser asks
Was this person female?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person female?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer built a hospital in Lambaréné ... where he and his wife, Hélène Bresslau, devoted themselves to philanthropic work.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q6
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.
Born: 14 January 1875, Kaysersberg, Germany (now France).Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was this person born in France?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in France?"}}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
Q8
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's birthplace in Kaysersberg, now in Alsace in France.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person born within the borders of the Russian Empire?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born within the borders of the Russian Empire?"}}Oracle evidence2 model-reported sources
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)
In 1875, when Albert was born, Alsace was German and became part of the Reichsland Elsass-Lothringen: the imperial territory of Alsace Lorraine.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person primarily known for contributions to the arts, literature, or music?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for contributions to the arts, literature, or music?"}}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; his musical career is described separately as distinguished.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Was this person primarily known for their work in science, mathematics, or medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their 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)
In 1906 he published The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests. ... [He was] internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was this person actively involved in politics, government, or the military?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person actively involved in politics, government, or the military?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
At the age of 82, ... Schweitzer, who shunned political involvement his entire life, became one of the leading antinuclear activists.Open hrcak.srce.hr (opens in a new tab)
After the first hydrogen bomb test in 1954, he began to make an intense study of the political and scientific aspects of the nuclear tests and the military implications.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person primarily known for their work in philosophy or religion?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their work in philosophy or religion?"}}Oracle evidence1 model-reported source
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)
2 · Answer check returns No
Q14
1 · Guesser asks
Was this person primarily known as an explorer, navigator, or pioneer of travel?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as an explorer, navigator, or pioneer of travel?"}}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. A theologian, Albert Schweitzer ... became a doctor in Africa.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person an inventor, engineer, or industrialist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person an inventor, engineer, or industrialist?"}} 2 · Answer check returns Unknown
Q16
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 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 a part of France).Open ebsco.com (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was this person born in Italy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Italy?"}}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–Lorraine.Open en.wikipedia.org (opens in a new tab)
In 1875, when Albert was born, Alsace was German and became part of the Reichsland Elsass-Lothringen.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q18
1 · Guesser asks
Was this person born in the Austrian Empire (or Austria-Hungary)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the Austrian Empire (or Austria-Hungary)?"}}Oracle evidence2 model-reported sources
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)
Schweitzer was born ... 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)
2 · Answer check returns No
Q19
1 · Guesser asks
Was this person born in Northern Europe (such as Scandinavia)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Northern Europe (such as Scandinavia)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was born in Alsace in the then German Empire.Open nobelprize.org (opens in a new tab)
Albert Schweitzer Born: 14 January 1875, Kaysersberg, Germany (now France).Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Was this person born in the Low Countries (the Netherlands or Belgium)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the Low Countries (the Netherlands or Belgium)?"}}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
Q21
1 · Guesser asks
Was this person born on the Iberian Peninsula (in Spain, Portugal, or Andorra)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born on the Iberian Peninsula (in Spain, Portugal, or Andorra)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Born: Jan. 14, 1875, Kaysersberg, Upper Alsace, Ger. [now in France]Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Was this person born in Southeastern Europe or the Balkans?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Southeastern Europe or the Balkans?"}}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 in France), on January 14, 1875.Open britannica.com (opens in a new tab)
Schweitzer was born on 14 January 1875 in Kaysersberg in Alsace.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Was this person born on the island of Ireland?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born on the island of Ireland?"}}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
Q24
1 · Guesser asks
Was this person primarily known for competing in sports or games (such as chess)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for competing in sports or games (such as chess)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He studied theology and became a priest... studied medicine... built and ran a hospital at the mission station Lambarene in Gabon.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
Q25
1 · Guesser asks
Was this person born in what is now Poland?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in what is now Poland?"}}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 a part of France).Open ebsco.com (opens in a new tab)
In 1875, when Albert was born, Alsace was German and became part of the Reichsland Elsass-Lothringen.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q26
1 · Guesser asks
Was this person born in Luxembourg?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Luxembourg?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer's birthplace in Kaysersberg, now in Alsace in France.Open en.wikipedia.org (opens in a new tab)
Albert Schweitzer was born on 14th January 1875 in the small village of Kaysersberg in Upper Alsace, North Eastern France.Open philosophynow.org (opens in a new tab)
2 · Answer check returns No
Q27
1 · Guesser asks
Was this person born on the island of Great Britain?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born on the island of Great Britain?"}}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
Q28
1 · Guesser asks
Was this person born within the Ottoman Empire?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born within the Ottoman Empire?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was born in Alsace in the then German Empire.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q29
1 · Guesser asks
Was this person born on an island?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born on an island?"}}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)
Kaysersberg lies ... on the eastern slopes of the Vosges mountains, on the river Weiss.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q30
1 · Guesser asks
Was this person primarily known for their work in business, commerce, or finance?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their work in business, commerce, or finance?"}}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)
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
Q31
1 · Guesser asks
Was this person born in the territory of present-day Russia?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the territory of present-day Russia?"}}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 a part of France).Open ebsco.com (opens in a new tab)
2 · Answer check returns No
Q32
1 · Guesser asks
Was this person born before the year 1850?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before the year 1850?"}}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) was born into an Alsatian family.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q33
1 · Guesser asks
Did this person die in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in Europe?"}}Oracle evidence2 model-reported sources
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)
Gabon ... in West Central AfricaOpen britannica.com (opens in a new tab)
2 · Answer check returns No
Q34
1 · Guesser asks
Did this person die in the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in the United States?"}}Oracle evidence2 model-reported sources
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)
Albert Schweitzer died last night in his jungle hospital here. Lambarene, Gabon.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns No
Q35
1 · Guesser asks
Did this person die in Asia?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in Asia?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
LAMBARENE, GABON, Sept. 5--Albert Schweitzer died last night in his jungle hospital here.Open archive.nytimes.com (opens in a new tab)
Albert Schweitzer ... dies at Lambaréné in Gabon.Open sahistory.org.za (opens in a new tab)
2 · Answer check returns No
Q36
1 · Guesser asks
Did this person die in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: Sept. 4, 1965, Lambaréné, Gabon.Open britannica.com (opens in a new tab)
Albert Schweitzer died last night in his jungle hospital in Lambaréné, Gabon.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns Yes
Q37
1 · Guesser asks
Did this person receive a Nobel Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person receive a Nobel Prize?"}}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.Open nobelprize.org (opens in a new tab)
Albert Schweitzer — Nobel Peace Prize 1952.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German polymath, medical missionary, theologian, and 1952 Nobel Peace Prize laureate who died in Gabon
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted description, including his Alsatian background, medical mission, and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German polymath, medical missionary, theologian, and 1952 Nobel Peace Prize laureate who died in Gabon","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes