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
- 5m 23s
- Round cost
- $0.1397 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 the person male?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person male?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was awarded the Nobel Peace Prize... Full name: Albert SchweitzerBorn: 14 January 1875Open nobelprize.org (opens in a new tab)
Is the person primarily known for work in entertainment?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person primarily known for work in entertainment?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer [was] best known for his philosophy of “reverence for life.”Open news.uthscsa.edu (opens in a new tab)
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)
Is the person a historical figure?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person a historical figure?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was awarded the Nobel Peace Prize... Born: 14 January 1875... Died: 4 September 1965.Open nobelprize.org (opens in a new tab)
Did the person hold a high-ranking political office?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person hold a high-ranking political office?"}}Was the person involved in a significant event or movement that shaped world history?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person involved in a significant event or movement that shaped world history?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer issued warnings against nuclear tests and the dangers from radioactive fallout, contributing to the peace and disarmament movement.Open nobelpeaceprize.org (opens in a new tab)
Albert Schweitzer was recognized for humanitarian work and for establishing a hospital at Lambaréné, making him an influential figure in modern humanitarianism.Open nobelprize.org (opens in a new tab)
Did the person lead a country or empire during a major war or period of significant conflict?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person lead a country or empire during a major war or period of significant conflict?"}}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)
Was the person's actions or influence primarily associated with a major social or cultural change?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person's actions or influence primarily associated with a major social or cultural change?"}}Is the person known by a single name or epithet (e.g., Rumi, The Buddha)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person known by a single name or epithet (e.g., Rumi, The Buddha)?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer Full name: Albert SchweitzerOpen nobelprize.org (opens in a new tab)
Was the person a key figure in a major scientific or philosophical development?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a key figure in a major scientific or philosophical development?"}}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.”Open nobelprize.org (opens in a new tab)
Albert Schweitzer ... set forth his personal philosophy of “reverence for life,” an ethical principle involving all living things.Open britannica.com (opens in a new tab)
Did the person make groundbreaking contributions to their field that were widely recognized during their lifetime or posthumously?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person make groundbreaking contributions to their field that were widely recognized during their lifetime or posthumously?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
His work is of international significance. His influential books included The Quest for the Historical Jesus, and his biography of Bach revived interest in the composer.Open artuk.org (opens in a new tab)
Albert Schweitzer received the Nobel Peace Prize for his philosophy of “reverence for life” and tireless humanitarian work.Open nobelprize.org (opens in a new tab)
Isaac Newton
English mathematician and physicist who formulated the laws of motion and universal gravitation
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is Isaac Newton, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English mathematician and physicist who formulated the laws of motion and universal gravitation","name":"Isaac Newton","question":null}}Was the person associated with the development of a fundamental theory or concept that bears their name?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person associated with the development of a fundamental theory or concept that bears their name?"}}Did the person primarily work in the field of physics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person primarily work in the field of physics?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Profession: Doctor of Philosophy, Theology and Medicine. Musician and missionary. ... Originally a student of theology and philosophy, he entered medical school ... to qualify as a mission doctor.Open nobelprize.org (opens in a new tab)
He is best known for founding the mission hospital at Lambaréné, providing medical aid to thousands.Open artuk.org (opens in a new tab)
Did the person make significant contributions to the field of biology or natural history?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did the person make significant contributions to the field of biology or natural history?"}}Was the person a contemporary of Charles Darwin?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was the person a contemporary of Charles Darwin?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Schweitzer was born 14 January 1875 and died 4 September 1965.Open nobelprize.org (opens in a new tab)
Charles Darwin was born Feb. 12, 1809 and died April 19, 1882.Open britannica.com (opens in a new tab)
Charles Babbage
English mathematician, philosopher, and inventor who conceived the idea of a mechanical computer
Validator rationale The proposal identifies Charles Babbage, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English mathematician, philosopher, and inventor who conceived the idea of a mechanical computer","name":"Charles Babbage","question":null}}Alfred Russel Wallace
British naturalist and explorer who contributed to the theory of evolution through natural selection
Validator rationale The proposal names Alfred Russel Wallace, a different person from the trusted subject, Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British naturalist and explorer who contributed to the theory of evolution through natural selection","name":"Alfred Russel Wallace","question":null}}Charles Lyell
Scottish geologist who made significant contributions to the field of geology
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Charles Lyell, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish geologist who made significant contributions to the field of geology","name":"Charles Lyell","question":null}}Ada Lovelace
English mathematician and writer known for her work on Charles Babbage's Analytical Engine
Validator rationale The proposal identifies Ada Lovelace, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English mathematician and writer known for her work on Charles Babbage's Analytical Engine","name":"Ada Lovelace","question":null}}Mary Anning
British paleontologist known for significant discoveries of Jurassic marine fossils
Validator rationale The proposal identifies Mary Anning, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British paleontologist known for significant discoveries of Jurassic marine fossils","name":"Mary Anning","question":null}}Charles Dickens
English novelist known for his vivid depiction of Victorian London and characters
Validator rationale The proposal identifies Charles Dickens, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English novelist known for his vivid depiction of Victorian London and characters","name":"Charles Dickens","question":null}}Robert FitzRoy
British naval officer and meteorologist who commanded the HMS Beagle during Charles Darwin's voyage
Validator rationale The proposal identifies Robert FitzRoy, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British naval officer and meteorologist who commanded the HMS Beagle during Charles Darwin's voyage","name":"Robert FitzRoy","question":null}}Joseph Dalton Hooker
British botanist and explorer who was a close friend and supporter of Charles Darwin
Validator rationale The proposal identifies Joseph Dalton Hooker, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British botanist and explorer who was a close friend and supporter of Charles Darwin","name":"Joseph Dalton Hooker","question":null}}Thomas Henry Huxley
English biologist and comparative anatomist known for his advocacy of Darwin's theory of evolution
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Thomas Henry Huxley, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English biologist and comparative anatomist known for his advocacy of Darwin's theory of evolution","name":"Thomas Henry Huxley","question":null}}George Eliot
English novelist known for works like Middlemarch
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies George Eliot, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English novelist known for works like Middlemarch","name":"George Eliot","question":null}}Florence Nightingale
English social reformer and statistician known for her work in nursing during the Crimean War
Validator rationale The proposal identifies Florence Nightingale, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English social reformer and statistician known for her work in nursing during the Crimean War","name":"Florence Nightingale","question":null}}Mary Somerville
Scottish mathematician and astronomer known for her work in celestial mechanics and translation of scientific works
Validator rationale The proposal identifies Mary Somerville, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish mathematician and astronomer known for her work in celestial mechanics and translation of scientific works","name":"Mary Somerville","question":null}}John Snow
English physician known for pioneering epidemiology during a cholera outbreak
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is John Snow, a different physician.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English physician known for pioneering epidemiology during a cholera outbreak","name":"John Snow","question":null}}Charles Darwin
English naturalist who proposed the theory of evolution through natural selection
Validator rationale The proposal identifies Charles Darwin, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English naturalist who proposed the theory of evolution through natural selection","name":"Charles Darwin","question":null}}Isambard Kingdom Brunel
English engineer known for his groundbreaking designs in civil engineering
Validator rationale The proposal identifies Isambard Kingdom Brunel, while the trusted subject is Albert Schweitzer; they are different people.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English engineer known for his groundbreaking designs in civil engineering","name":"Isambard Kingdom Brunel","question":null}}William Whewell
English polymath, philosopher, and historian of science
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies William Whewell, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English polymath, philosopher, and historian of science","name":"William Whewell","question":null}}Francis Galton
English polymath known for his work in statistics, genetics, and eugenics
Validator rationale The proposal names Francis Galton, a different person from Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English polymath known for his work in statistics, genetics, and eugenics","name":"Francis Galton","question":null}}Charles Kingsley
English author, historian, and social reformer
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Charles Kingsley, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English author, historian, and social reformer","name":"Charles Kingsley","question":null}}John Stuart Mill
English philosopher and economist known for his work on liberty and utilitarianism
Validator rationale The proposal identifies John Stuart Mill, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English philosopher and economist known for his work on liberty and utilitarianism","name":"John Stuart Mill","question":null}}Michael Faraday
English chemist and physicist who contributed significantly to the understanding of electromagnetism and electrochemistry
Validator rationale The proposal identifies Michael Faraday, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English chemist and physicist who contributed significantly to the understanding of electromagnetism and electrochemistry","name":"Michael Faraday","question":null}}Charles Robert Darwin's co-publishing contemporary who independently conceived the theory of evolution by natural selection
British naturalist and explorer
Validator rationale The proposal describes Alfred Russel Wallace, not Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British naturalist and explorer","name":"Charles Robert Darwin's co-publishing contemporary who independently conceived the theory of evolution by natural selection","question":null}}Mary Anne Evans
English novelist known under her pen name
Validator rationale The proposal identifies Mary Anne Evans, an English novelist, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English novelist known under her pen name","name":"Mary Anne Evans","question":null}}Robert Chambers
Scottish author and publisher known for his anonymously published work 'Vestiges of the Natural History of Creation', which was a precursor to evolutionary theory
Validator rationale The proposed identity is Robert Chambers, a Scottish author and publisher, not Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish author and publisher known for his anonymously published work 'Vestiges of the Natural History of Creation', which was a precursor to evolutionary theory","name":"Robert Chambers","question":null}}Robert FitzRoy
British naval officer and meteorologist who commanded the HMS Beagle during Charles Darwin's voyage
Validator rationale The proposal identifies Robert FitzRoy, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British naval officer and meteorologist who commanded the HMS Beagle during Charles Darwin's voyage","name":"Robert FitzRoy","question":null}}Mary Somerville
Scottish mathematician, astronomer, and science writer who made significant contributions to various scientific fields
Validator rationale The proposal identifies Mary Somerville, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish mathematician, astronomer, and science writer who made significant contributions to various scientific fields","name":"Mary Somerville","question":null}}John Snow
physician known for pioneering work on cholera epidemiology
Validator rationale The proposal identifies John Snow, whereas the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"physician known for pioneering work on cholera epidemiology","name":"John Snow","question":null}}Ada Lovelace
English mathematician known for her work on Charles Babbage's proposed mechanical general-purpose computer, the Analytical Engine
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is Ada Lovelace, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English mathematician known for her work on Charles Babbage's proposed mechanical general-purpose computer, the Analytical Engine","name":"Ada Lovelace","question":null}}Mary Anning
British paleontologist known for significant discoveries
Validator rationale The proposal identifies Mary Anning, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"British paleontologist known for significant discoveries","name":"Mary Anning","question":null}}Charles Robert Darwin
naturalist who proposed the theory of evolution
Validator rationale The proposal identifies Charles Robert Darwin, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"naturalist who proposed the theory of evolution","name":"Charles Robert Darwin","question":null}}Thomas Henry Huxley
English biologist known as Darwin's Bulldog for his advocacy of evolution
Validator rationale The proposal identifies Thomas Henry Huxley, an English biologist, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English biologist known as Darwin's Bulldog for his advocacy of evolution","name":"Thomas Henry Huxley","question":null}}Robert Chambers
Scottish author and publisher, anonymously published 'Vestiges of the Natural History of Creation', precursor to evolutionary theory
Validator rationale The proposal identifies Robert Chambers, a Scottish author and publisher, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish author and publisher, anonymously published 'Vestiges of the Natural History of Creation', precursor to evolutionary theory","name":"Robert Chambers","question":null}}John Stuart Mill
English philosopher and economist known for his work on liberty
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is John Stuart Mill, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English philosopher and economist known for his work on liberty","name":"John Stuart Mill","question":null}}Isambard Kingdom Brunel
English engineer known for groundbreaking civil engineering projects
Validator rationale The trusted subject is Albert Schweitzer, while the proposed identity is Isambard Kingdom Brunel, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"English engineer known for groundbreaking civil engineering projects","name":"Isambard Kingdom Brunel","question":null}}Charles Lyell
Scottish geologist who influenced Darwin
Validator rationale The trusted subject is Albert Schweitzer, while the proposal identifies Charles Lyell, a different person.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish geologist who influenced Darwin","name":"Charles Lyell","question":null}}Charles Lyell
influential geologist
Validator rationale The proposal identifies Charles Lyell, a geologist, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"influential geologist","name":"Charles Lyell","question":null}}Mary Somerville
Scottish mathematician, astronomer, and science writer
Validator rationale The proposal identifies Mary Somerville, while the trusted subject is Albert Schweitzer.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"Scottish mathematician, astronomer, and science writer","name":"Mary Somerville","question":null}}