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 2
Round 2
Identified Albert Schweitzer in 24 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 24
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 9m 13s
- Round cost
- $0.5081 All 25 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":"BKXG3AZI"}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 a real person (as opposed to a fictional character)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person a real person (as opposed to a fictional character)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer Born 14 January 1875... Died 4 September 1965... Minister turned doctor in Africa.Open nobelprize.org (opens in a new tab)
The Nobel Peace Prize 1952 was awarded to Albert Schweitzer.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q2
1 · Guesser asks
Is this person still alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person still alive?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer Born 14 January 1875... Died: 4 September 1965, Lambaréné, Gabon.Open nobelprize.org (opens in a new tab)
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
Q3
1 · Guesser asks
Did this person die before the year 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this 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 — Born: 14 January 1875... Died: 4 September 1965Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q4
1 · Guesser asks
Was this person primarily known for work in politics or government?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this 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.
Doctor, Missionary, Philosopher and Musician; he built and ran a hospital at Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
Albert Schweitzer ... is remembered as a great humanist who helped heal the sick and poor over decades in Africa.Open dw.com (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Was this person primarily known for work in the arts or entertainment (e.g., music, film, literature, visual arts)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for work in the arts or entertainment (e.g., music, film, literature, visual arts)?"}}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 altruism, reverence for life, and tireless humanitarian work; he is described as a doctor, missionary, philosopher and musician.Open nobelpeaceprize.org (opens in a new tab)
The mere mention of the name Schweitzer instantly conjured up images of selflessness, heroism and the very model of a modern, humane physician; he founded a hospital in Lambaréné and won the Nobel Peace Prize.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q6
1 · Guesser asks
Was this person primarily known for work in science, mathematics, or invention?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for work in science, mathematics, or invention?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer is described as a Doctor, Missionary, Philosopher and Musician; the Nobel citation recognizes his altruism, reverence for life, and tireless humanitarian work.Open nobelpeaceprize.org (opens in a new tab)
The Nobel Peace Prize was awarded to Albert Schweitzer for his altruism, reverence for life, and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was this person primarily known as an athlete or sports figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as an athlete or sports figure?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was recognized as a Doctor, Missionary, Philosopher and Musician, and received the 1952 Nobel Peace Prize for his humanitarian work.Open nobelpeaceprize.org (opens in a new tab)
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)
2 · Answer check returns No
Q8
1 · Guesser asks
Was this person primarily known as a business figure or entrepreneur?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a business figure or entrepreneur?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer — for his altruism, reverence for life, and tireless humanitarian work... Doctor, Missionary, Philosopher and Musician.Open nobelpeaceprize.org (opens in a new tab)
Dr. Albert Schweitzer, a renowned medical missionary... Philosopher and musician... a major... theologian.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person primarily known as a religious figure or spiritual leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a religious figure or spiritual leader?"}} 2 · Answer check returns Unknown
Q10
1 · Guesser asks
Was this person known as an activist or social reformer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known as an activist or social reformer?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer in all of his facets ... and political activist.Open academic.oup.com (opens in a new tab)
2 · Answer check returns Yes
Q11
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 evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
A complex man, to be sure, but his humanitarianism did affect the lives of many patients.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was this person from the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from the United States?"}}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). Residence at the time of the award: France.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person from India?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from India?"}}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 was born ... in Kaysersberg in the upper Alsace.Open mayoclinicproceedings.org (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Was this person from Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from Africa?"}}Oracle evidence2 model-reported sources
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)
Albert Schweitzer was born in Alsace in 1875.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person from Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from Europe?"}}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 this person from the United Kingdom?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from the United Kingdom?"}}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 I.Open mayoclinicproceedings.org (opens in a new tab)
Schweitzer was born in Alsace in the then German Empire.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was this person from Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person from Germany?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Full name: Albert Schweitzer Born: 14 January 1875, Kaysersberg, Germany (now France)Open nobelprize.org (opens in a new tab)
Schweitzer was born in Alsace in the then German Empire.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q18
1 · Guesser asks
Was this person known for resisting the Nazi regime?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for resisting the Nazi regime?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer refused to cooperate with the Nazis and refused to return to Germany.Open academic.oup.com (opens in a new tab)
2 · Answer check returns Yes
Q19
1 · Guesser asks
Was this person executed by the Nazi regime?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person executed by the Nazi regime?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer died in 1965 at age 90; his death was attributed to circulatory trouble brought on by advanced age.Open archive.nytimes.com (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser guesses
Martin Niemöller
German pastor and anti-Nazi activist, famous for the poem 'First they came...'; survived concentration camps and died in 1984
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Martin Niemöller, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German pastor and anti-Nazi activist, famous for the poem 'First they came...'; survived concentration camps and died in 1984","name":"Martin Niemöller","question":null}} 2 · Validator returns No
Q21
1 · Guesser asks
Was this person awarded the Nobel Peace Prize?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person awarded the Nobel Peace Prize?"}}Oracle evidence1 model-reported source
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)
2 · Answer check returns Yes
Q22
1 · Guesser guesses
Carl von Ossietzky
German pacifist journalist and activist who exposed German rearmament, won the 1935 Nobel Peace Prize, and died in 1938 after imprisonment in Nazi concentration camps
Validator rationale The proposal identifies Carl von Ossietzky, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German pacifist journalist and activist who exposed German rearmament, won the 1935 Nobel Peace Prize, and died in 1938 after imprisonment in Nazi concentration camps","name":"Carl von Ossietzky","question":null}} 2 · Validator returns No
Q23
1 · Guesser guesses
Ludwig Quidde
German pacifist and activist, winner of the 1927 Nobel Peace Prize, opponent of the Nazi regime who went into exile in Switzerland, died 1941
Validator rationale The proposal identifies Ludwig Quidde, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German pacifist and activist, winner of the 1927 Nobel Peace Prize, opponent of the Nazi regime who went into exile in Switzerland, died 1941","name":"Ludwig Quidde","question":null}} 2 · Validator returns No
Q24
1 · Guesser asks
Was this person awarded the Nobel Peace Prize after 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person awarded the Nobel Peace Prize after 1950?"}}Oracle evidence1 model-reported source
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)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian-German theologian, physician, and humanitarian who founded a hospital in Lambaréné, Gabon; won the 1952 Nobel Peace Prize and campaigned against nuclear weapons; died 1965
Validator rationale The proposed identity exactly matches Albert Schweitzer, including his profession, Lambaréné hospital, and 1952 Nobel Peace Prize.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian-German theologian, physician, and humanitarian who founded a hospital in Lambaréné, Gabon; won the 1952 Nobel Peace Prize and campaigned against nuclear weapons; died 1965","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes