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 1
Round 1
Did not identify Albert Schweitzer after 50 counted questions.
Back to all Albert Schweitzer rounds- Questions
- 50 Scored as 51
- Outcome
- Question limit reached
- Format errors
- No errors
- Duration
- 56m 6s
- Round cost
- $1.0931 All 51 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":"EAQCORIU"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
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.
Albert Schweitzer — Born: 14 January 1875... Died: 4 September 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
Is this person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person male?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
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)
Is this person a head of state?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person a head of state?"}}Was this person a scientist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a scientist?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer, an Alsatian-German theologian and physicianOpen britannica.com (opens in a new tab)
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionaryOpen nobelprize.org (opens in a new tab)
Is this person European?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person European?"}}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 the upper Alsace ... and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
Was this person British?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person British?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer and his wife, though French, were interned in France as German subjects.Open kids.britannica.com (opens in a new tab)
Schweitzer considered himself French — and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
Is this person French?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person French?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer considered himself French — and would formally take French citizenship after World War I.Open mayoclinicproceedings.org (opens in a new tab)
Did this person die before 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Born: 14 January 1875... Died: 4 September 1965, Lambaréné, GabonOpen nobelprize.org (opens in a new tab)
Was this person a military leader?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a military leader?"}}Was this person a painter?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a painter?"}}Was this person a writer?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a writer?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... wrote in French.Open openroadmedia.com (opens in a new tab)
Schweitzer, Albert, Christianity and the Religions of the World.Open nobelprize.org (opens in a new tab)
Was this person a novelist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a novelist?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was ... the theologian, organist, philosopher, physician, and medical missionary in Africa.Open openroadmedia.com (opens in a new tab)
Albert Schweitzer was an Alsatian born physician, theologian, musician, and philosopher.Open sk.sagepub.com (opens in a new tab)
Was this person a philosopher?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a philosopher?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Theologian and philosopherOpen nobelprize.org (opens in a new tab)
Henri Bergson
French philosopher known for works on time, memory, and evolution, Nobel Prize in Literature 1927
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is Henri Bergson, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher known for works on time, memory, and evolution, Nobel Prize in Literature 1927","name":"Henri Bergson","question":null}}Was this person born after 1900?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born after 1900?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer ... Born: 14 January 1875, Kaysersberg, Germany (now France)Open nobelprize.org (opens in a new tab)
Was this person a sociologist?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a sociologist?"}}Was this person a mathematician?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a mathematician?"}}Was this person a poet?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a poet?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Profession: Theologian, organist, philosopher, physician, and medical missionary in AfricaOpen nobelprize.org (opens in a new tab)
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionaryOpen nobelprize.org (opens in a new tab)
Did this person make significant contributions to mathematics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person make significant contributions to mathematics?"}}Was this person known for political philosophy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person known for political philosophy?"}}Was this person a historian?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person a historian?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
He was a historian of German church music and specialised in the pre-Johann Sebastian Bach period.Open museeprotestant.org (opens in a new tab)
Étienne Gilson
French philosopher and historian of medieval philosophy, author of works like "The Spirit of Medieval Philosophy"
Validator rationale The proposal identifies Étienne Gilson, while the trusted subject is Albert Schweitzer; they are different people.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of medieval philosophy, author of works like \"The Spirit of Medieval Philosophy\"","name":"Étienne Gilson","question":null}}Pierre Duhem
French philosopher of science and historian of medieval physics and thermodynamics
Validator rationale The proposal identifies Pierre Duhem, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher of science and historian of medieval physics and thermodynamics","name":"Pierre Duhem","question":null}}Gustave Le Bon
French philosopher, psychologist, and historian known for works on crowd psychology and social phenomena
Validator rationale The proposal identifies Gustave Le Bon, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher, psychologist, and historian known for works on crowd psychology and social phenomena","name":"Gustave Le Bon","question":null}}Henri Berr
French historian and philosopher, founder of the Revue de synthèse historique
Validator rationale The proposal identifies Henri Berr, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French historian and philosopher, founder of the Revue de synthèse historique","name":"Henri Berr","question":null}}Marc Bloch
French historian and philosopher of history, co-founder of the Annales School, author of "The Historian's Craft"
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Marc Bloch, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French historian and philosopher of history, co-founder of the Annales School, author of \"The Historian's Craft\"","name":"Marc Bloch","question":null}}Émile Durkheim
French sociologist and philosopher, founder of modern social science, author of works on social facts and historical methodology
Validator rationale The proposal identifies Émile Durkheim, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French sociologist and philosopher, founder of modern social science, author of works on social facts and historical methodology","name":"Émile Durkheim","question":null}}Georges Sorel
French social philosopher and political theorist known for works on Syndicalism and the role of violence in history
Validator rationale The proposal identifies Georges Sorel, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French social philosopher and political theorist known for works on Syndicalism and the role of violence in history","name":"Georges Sorel","question":null}}Jean Jaurès
French philosopher, historian, and socialist politician known for his writings on Marxism and social history
Validator rationale The proposal identifies Jean Jaurès, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher, historian, and socialist politician known for his writings on Marxism and social history","name":"Jean Jaurès","question":null}}Julien Benda
French philosopher and historian of intellectual trends, author of "La Trahison des Clercs"
Validator rationale The proposal identifies Julien Benda, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of intellectual trends, author of \"La Trahison des Clercs\"","name":"Julien Benda","question":null}}Gaston Bachelard
French philosopher and historian of science, known for works on the philosophy of science and poetic imagination
Validator rationale The proposed identity is Gaston Bachelard, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of science, known for works on the philosophy of science and poetic imagination","name":"Gaston Bachelard","question":null}}Alexandre Koyré
Russian-born French philosopher and historian of science, known for works on the history of scientific thought
Validator rationale The proposal names Alexandre Koyré, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Russian-born French philosopher and historian of science, known for works on the history of scientific thought","name":"Alexandre Koyré","question":null}}Charles Renouvier
French philosopher and historian of philosophy, known for neocriticism and works on Kant and moral philosophy
Validator rationale The proposal names Charles Renouvier, a different person from the trusted subject Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy, known for neocriticism and works on Kant and moral philosophy","name":"Charles Renouvier","question":null}}Léon Brunschvicg
French philosopher and historian of philosophy and science, author of works on mathematical reasoning and intellectual progress
Validator rationale The proposal identifies Léon Brunschvicg, a different French philosopher, not Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy and science, author of works on mathematical reasoning and intellectual progress","name":"Léon Brunschvicg","question":null}}Was this person Catholic?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person Catholic?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Schweitzer, a LutheranOpen openroadmedia.com (opens in a new tab)
A Lutheran minister, SchweitzerOpen access-ok.okeeffemuseum.org (opens in a new tab)
Victor Delbos
French philosopher and historian of philosophy, known for his work on Spinoza and the history of modern philosophy
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Victor Delbos, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy, known for his work on Spinoza and the history of modern philosophy","name":"Victor Delbos","question":null}}Émile Bréhier
French philosopher and historian of philosophy, author of "Histoire de la philosophie"
Validator rationale The proposal identifies Émile Bréhier, a French philosopher and historian, not Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy, author of \"Histoire de la philosophie\"","name":"Émile Bréhier","question":null}}Élie Halévy
French philosopher and historian known for his multi-volume History of the English People
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Élie Halévy, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian known for his multi-volume History of the English People","name":"Élie Halévy","question":null}}Francis de Pressensé
French Protestant philosopher and historian (1853–1914), known for works on democracy, ethics, and religious history
Validator rationale The proposal identifies Francis de Pressensé, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French Protestant philosopher and historian (1853–1914), known for works on democracy, ethics, and religious history","name":"Francis de Pressensé","question":null}}Charles Seignobos
French historian and philosopher of history (1854–1942), known for methodical works in historical criticism
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Charles Seignobos, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French historian and philosopher of history (1854–1942), known for methodical works in historical criticism","name":"Charles Seignobos","question":null}}Lucien Lévy-Bruhl
French philosopher and historian of religion, known for works on primitive mentality and anthropological studies
Validator rationale The proposal identifies Lucien Lévy-Bruhl, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of religion, known for works on primitive mentality and anthropological studies","name":"Lucien Lévy-Bruhl","question":null}}Henri Poincaré
French mathematician, theoretical physicist, and philosopher of science known for his work on the philosophy and history of mathematics
Validator rationale The proposal identifies Henri Poincaré, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French mathematician, theoretical physicist, and philosopher of science known for his work on the philosophy and history of mathematics","name":"Henri Poincaré","question":null}}Ernest Renan
French philosopher and historian known for critical works on religion and biblical history, author of "Life of Jesus"
Validator rationale The proposal identifies Ernest Renan, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian known for critical works on religion and biblical history, author of \"Life of Jesus\"","name":"Ernest Renan","question":null}}Abel Rey
French philosopher and historian of science and philosophy, author of works on the history of ideas and modern thought
Validator rationale The proposal identifies Abel Rey, while the trusted subject is Albert Schweitzer; they are different individuals.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of science and philosophy, author of works on the history of ideas and modern thought","name":"Abel Rey","question":null}}Jean Wahl
French philosopher and historian of philosophy (1888–1974) known for works on Hegel, Kierkegaard, and American philosophy
Validator rationale The proposal identifies Jean Wahl, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy (1888–1974) known for works on Hegel, Kierkegaard, and American philosophy","name":"Jean Wahl","question":null}}Maurice Halbwachs
French philosopher and sociologist, pioneer of collective memory studies, historian of social thought
Validator rationale The proposal identifies Maurice Halbwachs, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and sociologist, pioneer of collective memory studies, historian of social thought","name":"Maurice Halbwachs","question":null}}Théodule Ribot
French psychologist and philosopher, historian of the philosophy of mind and beginner of experimental psychology in France
Validator rationale The proposal identifies Théodule Ribot, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French psychologist and philosopher, historian of the philosophy of mind and beginner of experimental psychology in France","name":"Théodule Ribot","question":null}}Raymond Aron
French philosopher, sociologist, and historian of political thought and international relations
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Raymond Aron, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher, sociologist, and historian of political thought and international relations","name":"Raymond Aron","question":null}}Émile Chartier (Alain)
French philosopher and writer known for his essays on diverse topics under the pseudonym Alain
Validator rationale The proposal identifies Émile Chartier (Alain), a French philosopher and writer, not Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and writer known for his essays on diverse topics under the pseudonym Alain","name":"Émile Chartier (Alain)","question":null}}Émile Boutroux
French philosopher and historian of philosophy (1845–1921), known for his work on the philosophy of science and contingency
Validator rationale The proposal identifies Émile Boutroux, a different French philosopher, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian of philosophy (1845–1921), known for his work on the philosophy of science and contingency","name":"Émile Boutroux","question":null}}Michel Foucault
French philosopher and historian known for works on power, knowledge, and social institutions like Madness and Civilization
Validator rationale The proposal identifies Michel Foucault, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"French philosopher and historian known for works on power, knowledge, and social institutions like Madness and Civilization","name":"Michel Foucault","question":null}}