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 3
Round 3
Identified Albert Schweitzer in 24 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 24
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 10m 53s
- Round cost
- $0.9591 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":"AMZAISLM"}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 alive?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person alive?"}}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
Was this person born before 1800?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 1800?"}}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
Is this person known for work in the arts or entertainment?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for work in the arts or entertainment?"}}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.Open nobelprize.org (opens in a new tab)
He was also an accomplished musician, recognized as a Bach interpreter, and wrote a study of the composer's life and art.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q4
1 · Guesser asks
Was this person primarily known as a writer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a writer?"}}Oracle evidence3 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)
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)
2 · Answer check returns No
Q5
1 · Guesser asks
Was this person known as a musician or singer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known as a musician or singer?"}}Oracle evidence1 model-reported source
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.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q6
1 · Guesser asks
Was this person born in the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in the United States?"}}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 No
Q7
1 · Guesser asks
Was this person known for composing or performing classical music?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for composing or performing classical music?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
From his young manhood to his middle eighties, recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
Q8
1 · Guesser asks
Was this person born before 1850?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 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
Q9
1 · Guesser asks
Is this person known for composing music?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for composing music?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He was ... recognized as a concert organist, internationally known. Musicologist as well as performer, Schweitzer wrote a biography of Bach and a book on organ building and playing.Open nobelprize.org (opens in a new tab)
Albert Schweitzer's towering reputation ... has tended to overshadow his importance as organist and musicologist, especially in the study and performance of works by Johann Sebastian Bach.Open allmusic.com (opens in a new tab)
2 · Answer check returns No
Q10
1 · Guesser asks
Was this person an opera singer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person an opera singer?"}} 2 · Answer check returns Unknown
Q11
1 · Guesser asks
Was the piano this person's main musical instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the piano this person's main musical instrument?"}}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.Open nobelprize.org (opens in a new tab)
As a child, Schweitzer played the organ and piano ... he continued to perform as an organist throughout his life.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q12
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 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 Yes
Q13
1 · Guesser asks
Was this person a conductor of orchestras?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a conductor of orchestras?"}} 2 · Answer check returns Unknown
Q14
1 · Guesser asks
Did this person play a string instrument, such as the violin, cello, or guitar?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person play a string instrument, such as the violin, cello, or guitar?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer's musical career was initiated with piano and organ lessons.Open nobelprize.org (opens in a new tab)
Stringed instruments are identified as chordophones—instruments in which sound is produced by the vibration of strings.Open britannica.com (opens in a new tab)
The piano is classified as a chordophone due to its strings.Open britannica.com (opens in a new tab)
2 · Answer check returns Yes
Q15
1 · Guesser asks
Was the violin this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the violin this person's main instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He was ... recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
Albert Schweitzer's towering reputation ... [included his] importance as organist and musicologist.Open classical.music.apple.com (opens in a new tab)
2 · Answer check returns No
Q16
1 · Guesser asks
Was the cello this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the cello this person's main instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He was recognized as a concert organist, internationally known; his musical career began with piano and organ lessons.Open nobelprize.org (opens in a new tab)
As a child, Schweitzer played the organ and piano; he continued to perform as an organist throughout his life.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q17
1 · Guesser guesses
Andrés Segovia
Spanish classical guitarist who helped establish the guitar as a concert instrument.
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Andrés Segovia, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Spanish classical guitarist who helped establish the guitar as a concert instrument.","name":"Andrés Segovia","question":null}} 2 · Validator returns No
Q18
1 · Guesser asks
Was the guitar this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the guitar this person's main instrument?"}}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 from his young manhood to his middle eighties.Open nobelprize.org (opens in a new tab)
Schweitzer began his musical career as an organist in Strasbourg in 1893.Open britannica.com (opens in a new tab)
2 · Answer check returns No
Q19
1 · Guesser asks
Was the harp this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the harp this person's main instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
From his professional engagements he earned funds for his education... he was, from his young manhood to his middle eighties, recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
As a child, Schweitzer played the organ and piano... he continued to perform as an organist throughout his life.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q20
1 · Guesser asks
Was the viola this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the viola this person's main instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His musical talent earned him international recognition... he continued to perform as an organist throughout his life.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
The organist... Albert Schweitzer also took a great interest in organ building.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q21
1 · Guesser asks
Was the double bass this person's main instrument?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the double bass this person's main instrument?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
From his professional engagements he earned funds for his education... he was... recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
Schweitzer worked tirelessly and explored Bach’s music with him, first on the piano and then on the organ.Open schweitzer.org (opens in a new tab)
2 · Answer check returns No
Q22
1 · Guesser asks
Was this person known for playing the harpsichord?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for playing the harpsichord?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer's towering reputation as a humanitarian and theologian has tended to overshadow his importance as organist and musicologist.Open allmusic.com (opens in a new tab)
Musicologist as well as performer, Schweitzer wrote a biography of Bach in 1905 in French, published a book on organ building and playing in 1906.Open nobelprize.org (opens in a new tab)
As a child, Schweitzer played the organ and piano... he continued to perform as an organist throughout his life.Open pmc.ncbi.nlm.nih.gov (opens in a new tab)
2 · Answer check returns No
Q23
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
Q24
1 · Guesser asks
Was this person known for playing the organ?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for playing the organ?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
From his young manhood to his middle eighties, [he was] recognized as a concert organist, internationally known.Open nobelprize.org (opens in a new tab)
He continued to perform as an organist throughout his life, even publishing a book on organ construction and a biography on Bach.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, organist, and recipient of the 1952 Nobel Peace Prize.
Validator rationale The proposed identity names Albert Schweitzer and matches the trusted description, including his Alsatian medical, theological, musical, and 1952 Nobel Peace Prize identifiers.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Alsatian physician, theologian, organist, and recipient of the 1952 Nobel Peace Prize.","name":"Albert Schweitzer","question":null}} 2 · Validator returns Yes