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 18 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 18
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 6m 46s
- Round cost
- $0.4999 All 19 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 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.
Died: Sept. 4, 1965, Lambaréné, Gabon (aged 90)Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Did this person die after January 1, 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die after January 1, 1900?"}}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 Yes
Q3
1 · Guesser asks
Was this person a citizen of the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this 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 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 primarily known as a political leader or monarch?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a political leader or monarch?"}}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
Q6
1 · Guesser asks
Was this person primarily known for their work in the arts, literature, or entertainment?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for their work in the arts, literature, or entertainment?"}}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)
He studied theology... studied medicine... built and ran a hospital... Albert Schweitzer was also a gifted musician and interpreter of Bach.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Was this person primarily known for contributions to science, mathematics, or medicine?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for contributions to science, mathematics, or medicine?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Prize motivation: “for his altruism, reverence for life, and tireless humanitarian work.”Open nobelprize.org (opens in a new tab)
He is renowned for his theological work, The Quest of the Historical Jesus.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q8
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.
In 1912 Schweitzer 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 No
Q9
1 · Guesser asks
Was this person known primarily as a military figure or commander?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known primarily as a military figure or commander?"}}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.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person primarily known for work in philosophy, religion, or theology?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for work in philosophy, religion, or theology?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
In 1906 he published The Quest of the Historical Jesus, a book on which much of his fame as a theological scholar rests.Open nobelprize.org (opens in a new tab)
He is renowned for his theological work, The Quest of the Historical Jesus.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q11
1 · Guesser asks
Was this person primarily known as a philosopher?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a philosopher?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer, a physician, musician and humanitarian best known for his philosophy of “reverence for life.”Open news.uthscsa.edu (opens in a new tab)
Doctor, Missionary, Philosopher and Musician. The expression “reverence for life” is the key to Albert Schweitzer's personal philosophy.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Unknown
Q12
1 · Guesser asks
Was this person associated with Christianity?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person associated with Christianity?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer (1875–1965). Christian theologian and mission doctor.Open encyclopedia.com (opens in a new tab)
A lifelong Lutheran, Schweitzer challenged both the secular and traditional Christian views of Jesus.Open uua.org (opens in a new tab)
2 · Answer check returns Yes
Q13
1 · Guesser asks
Was this person affiliated with the Roman Catholic Church?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person affiliated with the Roman Catholic Church?"}}Oracle evidence3 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)
In the early 20th century a young pastor Albert Schweitzer was a vicar until he left for Lambaréné in 1913.Open museeprotestant.org (opens in a new tab)
Lutheran ... After completing his theological studies Albert Schweitzer served as curate and preached here beginning in 1899.Open stnicholascenter.org (opens in a new tab)
2 · Answer check returns No
Q14
1 · Guesser asks
Did this person die before January 1, 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before January 1, 1950?"}}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)Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person affiliated with Protestantism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person affiliated with Protestantism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer, Albert — famous Alsatian theologian, philosopher, medical missionary, organist, and music scholar; ... his father, a Lutheran pastor.Open encyclopedia.com (opens in a new tab)
Schweitzer entered into his intensive theological studies ... received his licentiate in theology in 1900. He began preaching at St.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q16
1 · Guesser asks
Was this person born in Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Germany?"}}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
Q17
1 · Guesser asks
Did this person die before January 1, 1980?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before January 1, 1980?"}}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)Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q18
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 evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
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
German-Alsatian polymath, theologian, philosopher, physician, and recipient of the 1952 Nobel Peace Prize
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted subject’s profession and 1952 Nobel Peace Prize description.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German-Alsatian polymath, theologian, philosopher, physician, and recipient of the 1952 Nobel Peace Prize","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes