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 37 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 37
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 18m 21s
- Round cost
- $1.5932 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":"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 historical or living individual?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person a real historical or living individual?"}}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 1965, Lambaréné, Gabon.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q2
1 · Guesser asks
Is this person alive today?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this 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
Q3
1 · Guesser asks
Did this person die in or after 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in or after 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Died: September 4, 1965, Lambaréné, GabonOpen peaceprizelaureates.nobelpeacecenter.org (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Is this person primarily known for political leadership or military service?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person primarily known for political leadership or military service?"}}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)
Albert Schweitzer, a renowned medical missionary... the mere mention of the name Schweitzer instantly conjured up images of selflessness, heroism and the very model of a modern, humane physician.Open pbs.org (opens in a new tab)
2 · Answer check returns No
Q5
1 · Guesser asks
Is this person known for work in the arts or entertainment, such as writing, music, acting, or visual art?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for work in the arts or entertainment, such as writing, music, acting, or visual art?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
At Lambaréné, Schweitzer was ... writer of scholarly books ... musician.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q6
1 · Guesser asks
Was this person primarily known as an actor or musician?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as an actor or musician?"}}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. 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
Q7
1 · Guesser asks
Was this person known for writing novels, poetry, or plays?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for writing novels, poetry, or plays?"}}Oracle evidence3 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 The Quest of the Historical Jesus; he also wrote a biography of Bach and books on organ building and playing.Open nobelprize.org (opens in a new tab)
Published works include The Quest of the Historical Jesus, The Primeval Forest, The Mysticism of Paul the Apostle, and Out of My Life and Thought.Open press.jhu.edu (opens in a new tab)
2 · Answer check returns No
Q8
1 · Guesser asks
Was this person known for painting, sculpture, or illustration?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for painting, sculpture, or illustration?"}}Oracle evidence2 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; he is renowned for his theological work.Open britannica.com (opens in a new tab)
Schweitzer was recognized as an internationally known concert organist and was a musicologist, theologian, and physician.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person known for directing or producing films?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for directing or producing films?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was recognized as an internationally known concert organist and was renowned as a theological scholar, musicologist, and performer.Open nobelprize.org (opens in a new tab)
For the film Albert Schweitzer, the AFI credits Jerome Hill as director and lists Jerome Hill and Erica Anderson as producers; Albert Schweitzer is credited for words.Open catalog.afi.com (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person known for architecture or design?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for architecture or design?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was an Alsatian-German religious philosopher, musicologist, and medical missionary in Africa. He was known especially for founding the Schweitzer Hospital.Open encyclopedia.com (opens in a new tab)
His fame as a theological scholar rests on The Quest of the Historical Jesus; he was also recognized internationally as a concert organist.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q11
1 · Guesser asks
Was this person known for performing live in front of audiences?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for performing live in front of audiences?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer made a name for himself in the musical world... and accompanied the choir and orchestra... which performed at the Salle Gaveau several times a year.Open schweitzer.org (opens in a new tab)
On 28 July 1909, Albert Schweitzer organised the first anniversary concert of Johann Sebastian Bach’s death.Open schweitzer.org (opens in a new tab)
2 · Answer check returns Yes
Q12
1 · Guesser asks
Was this person known for magic tricks or escape acts?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for magic tricks or escape acts?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
At Lambaréné, Schweitzer was doctor and surgeon in the hospital, pastor of a congregation, administrator of a village, superintendent of buildings and grounds.Open nobelprize.org (opens in a new tab)
He was an Alsatian-German theologian, philosopher, organist, and mission doctor in equatorial Africa.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q13
1 · Guesser asks
Was this person known for dancing or choreography?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for dancing or choreography?"}} 2 · Answer check returns Unknown
Q14
1 · Guesser asks
Was this person known for comedy or making audiences laugh?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for comedy or making audiences laugh?"}}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)
His fame as a theological scholar... he was... recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Was this person known for circus acts, stunt performances, or exhibitions of physical skill?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for circus acts, stunt performances, or exhibitions of physical skill?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His fame as a theological scholar rests on The Quest of the Historical Jesus; he was also internationally known as a concert organist.Open nobelprize.org (opens in a new tab)
Albert Schweitzer | Alsatian Theologian, Philosopher & PhysicianOpen britannica.com (opens in a new tab)
2 · Answer check returns No
Q16
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.
Albert Schweitzer — Born: 14 January 1875; Role: Missionary surgeon; Founder of Lambaréné.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser asks
Was this person American?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person American?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
At this time 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
Q18
1 · Guesser asks
Was this person known for mime or pantomime performances?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for mime or pantomime performances?"}} 2 · Answer check returns Unknown
Q19
1 · Guesser asks
Was this person known for presenting or hosting television or radio programs?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for presenting or hosting television or radio programs?"}} 2 · Answer check returns Unknown
Q20
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 a part of France).Open ebsco.com (opens in a new tab)
2 · Answer check returns Yes
Q21
1 · Guesser asks
Did this person's public performances involve music or singing?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person's public performances involve music or singing?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He continued to return to Europe to perform in concert.Open classical.music.apple.com (opens in a new tab)
In 1909, Albert Schweitzer organised the first anniversary concert of Johann Sebastian Bach’s death.Open schweitzer.org (opens in a new tab)
2 · Answer check returns Yes
Q22
1 · Guesser asks
Did this person compose music?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person compose music?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
List of choral works: Discendi Santo Spirito. Categories: Composers; Early 20th century composers; German composers.Open cpdl.org (opens in a new tab)
Categories: Albert Schweitzer compositions; SATB; 4-part choral music; Sacred music; Motets.Open test.cpdl.org (opens in a new tab)
2 · Answer check returns Yes
Q23
1 · Guesser asks
Was this person born before 1870?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 1870?"}}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
Q24
1 · Guesser asks
Was this person born in the Russian Empire or the Soviet Union?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the Russian Empire or the Soviet Union?"}}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, Upper Alsace, Germany (now in France), on January 14, 1875.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q25
1 · Guesser asks
Is this person known for composing classical concert music or operas?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for composing classical concert music or operas?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He was, from his young manhood to his middle eighties, recognized as a concert organist, internationally known. Musicologist as well as performer, Schweitzer wrote a biography of Bach in 1905.Open nobelprize.org (opens in a new tab)
Widor recognized Schweitzer as a Bach interpreter of unique perception and asked him to write a study of the composer’s life and art.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q26
1 · Guesser asks
Is this person known for composing music for films?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for composing music for films?"}} 2 · Answer check returns Unknown
Q27
1 · Guesser asks
Was this person born in the United Kingdom or Ireland?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the United Kingdom or 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
Q28
1 · Guesser asks
Was this person famous as a singer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person famous as a singer?"}}Oracle evidence2 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; his theological work established him as a world figure.Open britannica.com (opens in a new tab)
His towering reputation as a humanitarian and theologian ... overshadowed his importance as organist and musicologist.Open allmusic.com (opens in a new tab)
2 · Answer check returns No
Q29
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.
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
Q30
1 · Guesser asks
Was this person associated with electronic music or musique concrète?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person associated with electronic music or musique concrète?"}} 2 · Answer check returns Unknown
Q31
1 · Guesser asks
Was this person born before 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 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 Yes
Q32
1 · Guesser asks
Did this person write songs or music for musical theatre, revues, or operettas?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person write songs or music for musical theatre, revues, or operettas?"}} 2 · Answer check returns Unknown
Q33
1 · Guesser asks
Was this person born in Paris?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Paris?"}}Oracle evidence1 model-reported source
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)
2 · Answer check returns No
Q34
1 · Guesser asks
Did this person play the piano?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person play the piano?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer began to play the piano at the age of 5.Open nobelprize.org (opens in a new tab)
As a child, Schweitzer played the organ and piano.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns Yes
Q35
1 · Guesser asks
Did this person die before 1950?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before 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, at the age of 90.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q36
1 · Guesser asks
Did this person become famous for an invention or a new kind of musical instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person become famous for an invention or a new kind of musical instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Much of his fame as a theological scholar rests on The Quest of the Historical Jesus. He was also recognized internationally as a concert organist.Open nobelprize.org (opens in a new tab)
He built and ran a hospital at Lambarene in Gabon. Albert Schweitzer was also a gifted musician and interpreter of Bach, giving organ concerts to finance the hospital.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q37
1 · Guesser asks
Was this person also known for scientific, philosophical, religious, or medical work?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person also known for scientific, philosophical, religious, or medical work?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer was a theologian, musician, medical missionary, and philosopher.Open encyclopedia.com (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 Yes
G
1 · Guesser guessesNot counted
Albert Schweitzer
Alsatian physician, theologian, philosopher, and organist who founded a hospital in Lambaréné and received the Nobel Peace Prize.
Validator rationale The proposed identity exactly matches Albert Schweitzer, including the distinctive Lambaréné hospital and Nobel Peace Prize details.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian physician, theologian, philosopher, and organist who founded a hospital in Lambaréné and received the Nobel Peace Prize.","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes