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 5
Round 5
Identified Albert Schweitzer in 30 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 30
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 8m 5s
- Round cost
- $0.3328 All 31 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":"XSZW5TRZ"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Is the person currently living?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person currently living?"}}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)
Was this person primarily known for political leadership or public office?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for political leadership or public office?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Dr. Schweitzer was a physician, philosopher, theologian, organist and humanitarian... known for his charitable work including opening a hospital in Africa.Open interlochenpublicradio.org (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)
Was this person primarily known for work in the arts or entertainment industry?
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 industry?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was nominated for his humanitarian work on a religious basis.Open nobelprize.org (opens in a new tab)
Was this person primarily known for scientific or mathematical work?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for scientific or mathematical work?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer was nominated for his humanitarian work on a religious basis.Open nobelprize.org (opens in a new tab)
Was this person primarily known for achievements in sports or athletics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for achievements in sports or athletics?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Doctor, Missionary, Philosopher and Musician; recognized for tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionary; nominated for humanitarian work.Open nobelprize.org (opens in a new tab)
Was this person primarily known for military service or military leadership?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for military service or military leadership?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (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)
Was this person primarily known for business, entrepreneurship, or industry?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for business, entrepreneurship, or industry?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (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)
Was this person primarily known for religious leadership, teaching, or religious writings?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for religious leadership, teaching, or religious writings?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Schweitzer dedicated the last six decades of his life to medicine and to a hospital he founded... in Lambaréné, Gabon.Open press.jhu.edu (opens in a new tab)
Was this person primarily known for exploration, navigation, or geographic discovery?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for exploration, navigation, or geographic discovery?"}}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 philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Dr. Schweitzer was a physician, philosopher, theologian, organist and humanitarian... known for his charitable work including opening a hospital in Africa.Open michiganpublic.org (opens in a new tab)
Was this person primarily known as a writer of literary works, such as novels, plays, or poetry?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a writer of literary works, such as novels, plays, or poetry?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionary... nominated... for his humanitarian work... he and his wife set up a hospital.Open nobelprize.org (opens in a new tab)
Was this person primarily known for involvement in crime, espionage, or organized criminal activity?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for involvement in crime, espionage, or organized criminal activity?"}}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 the mission station Lambarene in Gabon.Open nobelprize.org (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)
Was this person primarily known as a philosopher or philosophical thinker?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known as a philosopher or philosophical thinker?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Albert Schweitzer ... was long revered for his humanitarian work in Africa.Open dw.com (opens in a new tab)
Was the person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person male?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
his wife studied nursing to help her husbandOpen kids.britannica.com (opens in a new tab)
Was this person primarily known for inventing or developing a practical technology, device, or engineering system?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for inventing or developing a practical technology, device, or engineering system?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Motivation: Founder Lambaréné Hospital, Gabon.Open nobelprize.org (opens in a new tab)
Was this person primarily known for social reform, humanitarian work, or activism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for social reform, humanitarian work, or activism?"}}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 philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Albert Schweitzer ... was long revered for his humanitarian work in Africa.Open dw.com (opens in a new tab)
Was this person a prominent leader of the African-American civil rights movement in the United States?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a prominent leader of the African-American civil rights movement in the United States?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was nominated for his humanitarian work... he entered medical school... to qualify as a mission doctor in Gabon... he and his wife set up a hospital [at Lambaréné].Open nobelprize.org (opens in a new tab)
Martin Luther King, Jr. ... was the nation's most prominent leader in the 20th century struggle for civil rights.Open nps.gov (opens in a new tab)
Was this person a major leader of India’s independence movement and known for advocating nonviolent resistance?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a major leader of India’s independence movement and known for advocating nonviolent resistance?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... Minister turned doctor in Africa ... A theologian and philosopher.Open nobelprize.org (opens in a new tab)
Mahatma Gandhi ... is one of the most revered leaders in the history of India and a global symbol of non-violent resistance.Open culture.gov.in (opens in a new tab)
Was this person primarily known for campaigning to abolish slavery or the slave trade?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person primarily known for campaigning to abolish slavery or the slave trade?"}}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 philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Doctor, Missionary, Philosopher and Musician... he and his wife built and ran a hospital at the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
Did this person perform notable humanitarian work during a war or genocide?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person perform notable humanitarian work during a war or genocide?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer established a hospital at Lambarene ... and spent most of his life there as a doctor, surgeon and administrator in the hospital.Open journalofethics.ama-assn.org (opens in a new tab)
The hospital at Lambaréné during the war years, 1939-1945 ... by Albert Schweitzer.Open onlinebooks.library.upenn.edu (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)
Did this person help rescue Jewish people from persecution during the Holocaust?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person help rescue Jewish people from persecution during the Holocaust?"}}Was this person a diplomat or government official who carried out humanitarian actions during wartime?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a diplomat or government official who carried out humanitarian actions during wartime?"}}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 the mission station Lambarene in Gabon.Open nobelprize.org (opens in a new tab)
During World War I Schweitzer and his wife ... were interned in France as German subjects.Open kids.britannica.com (opens in a new tab)
Did this person found or co-found the International Committee of the Red Cross or the broader Red Cross movement?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person found or co-found the International Committee of the Red Cross or the broader Red Cross movement?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The five founders of the ICRC: Gustave Moynier, Louis Appia, Henry Dunant, Théodore Maunoir and Henri Dufour.Open avarchives.icrc.org (opens in a new tab)
The Movement’s origins begin with the ICRC, which was created in 1863 by Swiss humanitarian Henry Dunant.Open icrc.org (opens in a new tab)
Did this person organize the rescue of children from German-occupied Czechoslovakia through the Kindertransport before World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person organize the rescue of children from German-occupied Czechoslovakia through the Kindertransport before World War II?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Nicholas Winton organized a rescue operation that brought approximately 669 children from Czechoslovakia to safety in Great Britain before the outbreak of World War II.Open encyclopedia.ushmm.org (opens in a new tab)
Was this person’s notable humanitarian work primarily connected to helping victims of the Holocaust?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person’s notable humanitarian work primarily connected to helping victims of the Holocaust?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
Schweitzer dedicated the last six decades of his life to medicine and to a hospital he founded ... in Lambaréné, Gabon.Open press.jhu.edu (opens in a new tab)
Did this person’s notable humanitarian work take place during World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person’s notable humanitarian work take place during World War II?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The hospital at Lambaréné during the war years, 1939-1945 ... by Albert Schweitzer.Open onlinebooks.library.upenn.edu (opens in a new tab)
Did this person provide humanitarian aid to civilians in China during the Second Sino-Japanese War or World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person provide humanitarian aid to civilians in China during the Second Sino-Japanese War or World War II?"}}Norman Bethune
Canadian physician and social reformer who provided medical and humanitarian aid in China during the Second Sino-Japanese War.
Validator rationale The proposal identifies Norman Bethune, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Canadian physician and social reformer who provided medical and humanitarian aid in China during the Second Sino-Japanese War.","name":"Norman Bethune","question":null}}Did this person’s principal humanitarian work during World War II take place primarily in Europe?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person’s principal humanitarian work during World War II take place primarily in Europe?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He returned to Europe in 1927 but made frequent trips to Lambarene and continued working there throughout World War II.Open history.co.uk (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)
Did this person carry out their notable humanitarian work primarily in Africa?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person carry out their notable humanitarian work primarily in Africa?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
He dedicated himself to medical studies, seeking to build and run a hospital in Africa to alleviate suffering. The hospital in Lambaréné became his life’s work.Open nobelprize.org (opens in a new tab)
Among his many charitable works, Dr. Schweitzer founded a hospital in Lambaréné, which was situated in what was then known as French Equatorial Africa.Open pbs.org (opens in a new tab)
Did this person provide medical care or establish a hospital in Africa during World War II?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person provide medical care or establish a hospital in Africa during World War II?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The hospital at Lambaréné during the war years, 1939–1945 ... by Albert Schweitzer.Open onlinebooks.library.upenn.edu (opens in a new tab)
During his time in Lambaréné, he was doctor and surgeon in the hospital.Open history.rcp.ac.uk (opens in a new tab)
Albert Schweitzer
Physician and humanitarian who established and ran a hospital at Lambaréné in Gabon, Africa.
Validator rationale The proposed identity exactly matches Albert Schweitzer, including the name and the distinctive Lambaréné hospital description.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Physician and humanitarian who established and ran a hospital at Lambaréné in Gabon, Africa.","name":"Albert Schweitzer","question":null}}