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 1
Round 1
Identified Albert Schweitzer in 25 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 25
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 13m 10s
- Round cost
- $0.8383 All 26 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":"EAQCORIU"}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.
Died: 4 September 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Did the person die in or after the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person die 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 (1875–1965): A reverence for lifeOpen 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.
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 Yes
Q5
1 · Guesser asks
Did the person serve as a head of state or head of government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person serve as a head of state or head of government?"}} 2 · Answer check returns Unknown
Q6
1 · Guesser asks
Was the person primarily known as a scientist, mathematician, or inventor?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as a scientist, mathematician, or inventor?"}}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 as an artist, writer, musician, or entertainer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known as an artist, writer, musician, or entertainer?"}}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)
Much of his fame as a theological scholar rests [on The Quest of the Historical Jesus].Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q8
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 was born in Alsace... Together with his wife, who was a nurse, he built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Did the person serve in the military or engage in armed conflict?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person serve in the military or engage in armed conflict?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
During his compulsory military service in 1894, Schweitzer had an epiphany of sorts while reading the Book of Matthew.Open pbs.org (opens in a new tab)
2 · Answer check returns Yes
Q10
1 · Guesser asks
Did the person die before the year 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person die before the year 1950?"}}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
Q11
1 · Guesser asks
Was the person associated with the Soviet Union or Russia?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person associated with the Soviet Union or Russia?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
This article discusses Albert Schweitzer’s view of the mid-twentieth-century nuclear arms race between the Soviet Union and the United States.Open surface.syr.edu (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was the person a citizen or subject of the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a citizen or subject of the United Kingdom?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer and his wife, German citizens in a French colony when the countries were at war.Open en.wikipedia.org (opens in a new tab)
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
Q13
1 · Guesser asks
Did the person participate in World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person participate in World War II?"}} 2 · Answer check returns Unknown
Q14
1 · Guesser asks
Was the person born in or after the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the 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
Q15
1 · Guesser asks
Was the person born in Germany or Austria?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person born in Germany or Austria?"}}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
Q16
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
Q17
1 · Guesser asks
Did the person fight or serve in World War I?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person fight or serve in World War I?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1917 he and his wife were sent to a French internment camp as prisoners of war; released in 1918, Schweitzer spent the next six years in Europe.Open nobelprize.org (opens in a new tab)
In 1917, he and his wife were transferred to France, where they were interned in two different prison camps for civilian aliens.Open ebsco.com (opens in a new tab)
2 · Answer check returns No
Q18
1 · Guesser asks
Was the person an official, officer, or political figure in Nazi Germany or the Third Reich?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person an official, officer, or political figure in Nazi Germany or the Third Reich?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He refused to cooperate with the Nazis and refused to return to Germany as long as Hitler remained in power.Open academic.oup.com (opens in a new tab)
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)
2 · Answer check returns No
Q19
1 · Guesser asks
Was the person primarily known for their involvement in politics, diplomacy, or political activism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person primarily known for their involvement in politics, diplomacy, or political activism?"}}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 (République de Gabon). 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
Q20
1 · Guesser asks
Did the person live, work, or fight outside of Europe for a significant part of their life?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person live, work, or fight outside of Europe for a significant part of their life?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1913, having obtained his M.D. degree, he founded his hospital at Lambaréné in French Equatorial Africa.Open nobelprize.org (opens in a new tab)
He graduated in 1913. Immediately thereafter, he went to the steaming jungles of Gabon ... to carve out his field hospital at Lambarene. ... Dr. Schweitzer's 52-year-long career in Gabon.Open journalofethics.ama-assn.org (opens in a new tab)
2 · Answer check returns Yes
Q21
1 · Guesser asks
Did the person live or fight in Latin America or South America?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person live or fight in Latin America or South America?"}} 2 · Answer check returns Unknown
Q22
1 · Guesser asks
Did the person spend a significant part of their life in Asia?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person spend a significant part of their life in Asia?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer returned to Lambaréné in 1924 and except for relatively short periods of time, spent the remainder of his life there.Open nobelprize.org (opens in a new tab)
Having decided to go to Africa as a medical missionary... he founded his hospital at Lambaréné in French Equatorial Africa.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q23
1 · Guesser asks
Did the person live, work, or fight in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person live, work, or fight in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1913, having obtained his M.D. degree, he founded his hospital at Lambaréné in French Equatorial Africa.Open nobelprize.org (opens in a new tab)
Together with his wife, who was a nurse, he built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q24
1 · Guesser asks
Was the person active in North Africa (such as Egypt, Morocco, Algeria, Tunisia, or Libya)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person active in North Africa (such as Egypt, Morocco, Algeria, Tunisia, or Libya)?"}} 2 · Answer check returns Unknown
Q25
1 · Guesser asks
Was the person known as an explorer, traveler, or expedition leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person known as an explorer, traveler, or expedition leader?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer 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 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
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German polymath, theologian, organist, medical missionary, and 1952 Nobel Peace Prize laureate who founded and operated the Albert Schweitzer Hospital in Lambaréné, Gabon
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted subject's defining biographical details.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German polymath, theologian, organist, medical missionary, and 1952 Nobel Peace Prize laureate who founded and operated the Albert Schweitzer Hospital in Lambaréné, Gabon","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes