You are the Guesser in a Twenty Questions benchmark. Identify the hidden subject using as few counted turns as possible. BEGIN provides only its broad category. The variation_token has no clues; do not interpret, mention, or repeat it. The category in BEGIN has a broad meaning: - person: a real human, living or historical. - fictional_character: an invented character from a story, book, comic, film, television, game, or another fictional work. - mythological_figure: a figure from mythology or traditional legend. - video_game_character: a character known from video games. - thing: a broad category covering natural and human-made entities, living or nonliving, whole entities or parts of them. Possibilities include everyday objects, tools, machines, materials, food, animals, plants, body parts, natural structures, geographical features, celestial bodies, natural phenomena, and concepts. These possibilities are not exhaustive. The target may be a general kind or one particular instance. Use questions to narrow the supplied category. These definitions are not a list of targets. Use ASK for a factual question that distinguishes candidates. Never use ASK to confirm a specific identity. Use GUESS with a name and short identifying description to name a candidate. ASK has five possible replies: - YES or NO: the evidence establishes that answer to the exact question. - RATHER_YES or RATHER_NO: evidence leans that way, but is not strong enough for a firm answer. Treat this as a clue; keep candidates fitting the opposite answer possible. - UNKNOWN: no reliable direction. It supports neither answer. Ask clear questions about verifiable properties. "Can", "sometimes", "usually", "always", and "mainly" ask different things. Do not assume that one property proves another or rules out alternatives. Qualified replies express uncertainty about your question, not how often a property applies. Before narrowing heavily, check your key assumption with a different property. After rejected guesses, reconsider earlier assumptions as well as candidates. Answers can be mistaken; check another property when stuck. Do not ignore an answer merely because it conflicts with a preferred candidate. Each ASK, rejected GUESS, or format error before the limit costs one turn. A correct GUESS costs none. After 40 counted turns, make one final GUESS; ASK is then forbidden. Identity validation uses only YES, NO, or UNKNOWN. UNKNOWN on GUESS ends the game without success. FORMAT_ERROR means your output broke the contract, was not checked for correctness, and cost one turn. Retry using its displayed formats if a turn remains. Return only the required JSON object with exactly one result action. No explanations, reasoning, or extra fields.
Round 1
Round 1
Identified Albert Einstein in 12 counted questions.
Back to all Albert Einstein rounds- Questions
- 12
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 2m 23s
- Round cost
- $0.0174 All 13 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.
7 of 12 answers in this round reuse an earlier, fully checked answer with its original evidence. No new search or check ran for those turns.
Q1
1 · Guesser asks
Is the person alive as of 2025?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is the person alive as of 2025?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein — Born: 14 March 1879, Ulm, Germany; Died: 18 April 1955, Princeton, NJ, USA.Open nobelprize.org (opens in a new tab)
Source summary (model-reported)
Albert Einstein (born March 14, 1879 ... died April 18, 1955, Princeton, New Jersey, U.S.). Britannica also states that he died on April 18, 1955, at age 76.
Open britannica.com (opens in a new tab) 2 · Answer check returns No
Q2
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 evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
On March 14, 1879, Albert Einstein is born ... in Ulm, Germany.
Open history.com (opens in a new tab)Source summary (model-reported)
Quick Facts Born: March 14, 1879, Ulm, Württemberg (now Baden-Württemberg), Germany
Open britannica.com (opens in a new tab) 2 · Answer check returns Yes
Q3
1 · Guesser asks
Is this person known primarily for achievements in science, mathematics, or invention?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known primarily for achievements in science, mathematics, or invention?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Albert Einstein was a German-born physicist who developed the special and general theories of relativity and won the Nobel Prize for Physics in 1921 for his explanation of the photoelectric effect.
Open britannica.com (opens in a new tab)Source summary (model-reported)
Einstein's 1905 papers addressed major problems in physics, including light, atoms, electromagnetic theory, motion, and mass-energy. He later completed his general theory of relativity, and the theory's prediction that gravity bends starlight was confirmed by astronomers.
Open ias.edu (opens in a new tab)Source summary (model-reported)
Einstein became Professor of Theoretical Physics and published work on special and general relativity, along with other scientific research.
Open nobelprize.org (opens in a new tab) 2 · Answer check returns Yes
Q4
1 · Guesser asks
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.
By the time of his death in 1955, Einstein was considered by many not only the most important scientist of his time, but the smartest man alive.Open pbs.org (opens in a new tab)
2 · Answer check returns Yes
Q5
1 · Guesser asks
Is this person most famous for contributions to physics or astronomy?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person most famous for contributions to physics or astronomy?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Albert Einstein was a famous physicist. His research spanned from quantum mechanics to theories about gravity and motion... Einstein is generally considered the most influential physicist of the 20th century.
Open britannica.com (opens in a new tab)Source summary (model-reported)
Einstein revolutionized our understanding of gravity... In November 1915, Einstein made one of the most profound intellectual breakthroughs in the history of physics when he developed the full implications of his ideas on gravitation into his general theory of relativity.
Open nasa.gov (opens in a new tab)Source summary (model-reported)
Einstein's work included special and general relativity, statistical mechanics, quantum theory, the Brownian movement of molecules, and the photon theory of light.
Open nobelprize.org (opens in a new tab) 2 · Answer check returns Yes
Q6
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 evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein — Facts: Born: 14 March 1879, Ulm, Germany.Open nobelprize.org (opens in a new tab)
Albert Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q7
1 · Guesser asks
Did this person win the Nobel Prize in Physics?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person win the Nobel Prize in Physics?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Albert Einstein Nobel Prize in Physics 1921 ... Prize motivation: “for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect” ... Albert Einstein received his Nobel Prize one year later, in 1922.
Open nobelprize.org (opens in a new tab) 2 · Answer check returns Yes
Q8
1 · Guesser asks
Was this person born before 1870?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born before 1870?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein — Born: 14 March 1879, Ulm, Germany.Open nobelprize.org (opens in a new tab)
Albert Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q9
1 · Guesser asks
Was this person born in Germany?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person born in Germany?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Albert Einstein was born at Ulm, in Württemberg, Germany, on March 14, 1879.Open nobelprize.org (opens in a new tab)
Born in Ulm, Germany in 1879, Einstein was brought up in Munich.Open pbs.org (opens in a new tab)
2 · Answer check returns Yes
Q10
1 · Guesser asks
Did this person leave Germany permanently after the Nazi Party came to power in 1933?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person leave Germany permanently after the Nazi Party came to power in 1933?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Britannica states that Einstein decided in December 1932 to leave Germany forever and would never go back. It also describes his departure for the United States in the 1930s in response to attacks by the Nazi movement.
Open britannica.com (opens in a new tab)Source summary (model-reported)
Britannica reports that Einstein arrived in the United States in 1933, never to return to Europe. It notes that Hitler became chancellor in January 1933 and that Einstein surrendered his German passport after learning of Nazi actions against his property.
Open britannica.com (opens in a new tab)Source summary (model-reported)
The German Resistance Memorial Center states that when the National Socialists came to power in 1933, Einstein decided not to return to Germany; at the end of March 1933 he resigned from the Prussian Academy and applied to rescind his German nationality.
Open gdw-berlin.de (opens in a new tab) 2 · Answer check returns Unknown
Q11
1 · Guesser asks
Was this person awarded the Nobel Prize in Physics before 1920?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person awarded the Nobel Prize in Physics before 1920?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The Nobel Prize in Physics 1921 was awarded to Albert Einstein ... Albert Einstein received his Nobel Prize one year later, in 1922.Open nobelprize.org (opens in a new tab)
2 · Answer check returns No
Q12
1 · Guesser asks
Was this person's Nobel Prize in Physics awarded before 1935?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Was this person's Nobel Prize in Physics awarded before 1935?"}}Oracle evidence1 model-reported source
The Oracle reported these excerpts and URLs. They are not independently checked.
The Nobel Prize in Physics 1921 was awarded to Albert Einstein ... Albert Einstein received his Nobel Prize one year later, in 1922.Open nobelprize.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
Albert Einstein
German-born theoretical physicist (1879–1955), Nobel Prize in Physics for 1921, known for relativity.
Validator rationale The proposal identifies the exact historical person, Albert Einstein, matching the target identity and description.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German-born theoretical physicist (1879–1955), Nobel Prize in Physics for 1921, known for relativity.","name":"Albert Einstein","question":null}} 2 · Validator returns Yes