Deep20Bench
v1.1Current

Benchmark edition

Edition 1.1 settings

10 subjects3 rounds per subject40 question limit
Question answersYesRather yesRather noNoUnknown
What changed
Source
Menu
Round

Round 2

Round 2

Identified Albert Einstein in 13 counted questions.

Back to all Albert Einstein rounds
Questions
13
Outcome
Solved
Format errors
Errors found View one example
Duration
1m 34s
Round cost
$0.0215 All 14 turns

Format warning

The model sent replies in the wrong format.

The Guesser sent 1 invalid reply. Each one before the question limit used up a counted turn. The model was only reminded of the required format; it was never told whether its question or guess was correct.

Valid format
92.9%
Format errors
1
Turns used by format errors
1

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.

System message
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.
BEGIN event
{"category":"person","event":"BEGIN","variation_token":"BKXG3AZI"}

Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.

6 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 reply rejectedTurn counted

Reply in the wrong format.

Invalid action · fixed format reminder sent

Why this reply was rejectedInvalid action · turn 1

The reply was JSON, but it matched neither the ASK nor the GUESS format.

Recorded type
invalid_action
Turn
1
Counted
Yes · question 1
Feedback
FORMAT_ERROR
What the model returnedExact text from the provider
Attempt 1 · finish stop
{"action":"ASK","question":"Is this person still alive?"}
What a valid reply looks likeThe same formats shown to the Guesser
ASK
{"result":{"action":"ASK","description":null,"name":null,"question":"<non-empty yes-or-no property question>"}}
GUESS
{"result":{"action":"GUESS","description":"<non-empty identifying description>","name":"<non-empty candidate name>","question":null}}

A reply must match one of these formats exactly. Text fields in use must not be empty; unused fields must be JSON null.

2 · System responseFORMAT
Q2
1 · Guesser asks

Is this person still alive?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person still alive?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns No
Q3
1 · Guesser asks

Is this person male?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person male?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

PBS identifies Albert Einstein as a physicist and describes him as having been considered by many to be “the smartest man alive.”

Open pbs.org
2 · Answer check returns Yes
Q4
1 · Guesser asks

Is this person known mainly for politics or leadership?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known mainly for politics or leadership?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

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. Einstein is generally considered the most influential physicist of the 20th century.

Open britannica.com
Source 03

Source summary (model-reported)

The world-renowned scientist Albert Einstein transformed physics with his groundbreaking theory of relativity. Less well known is the fact that he was an influential civil rights activist.

Open si.edu
2 · Answer check returns No
Q5
1 · Guesser asks

Is this person known for work in science or technology?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person known for work in science or technology?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02
He developed the general theory of relativity, one of the two pillars of modern physics, alongside quantum mechanics. In 1921 he received the Nobel Prize in Physics for his “services to theoretical physics”.
Open alberteinstein.com
Source 03

Source summary (model-reported)

Britannica identifies Albert Einstein as a German-American physicist and describes his work on the principle of relativity and his 1905 physics papers.

Open britannica.com
2 · Answer check returns Yes
Q6
1 · Guesser asks

Did this person die in the 20th century?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die in the 20th century?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q7
1 · Guesser asks

Is this person best known for physics?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is this person best known for physics?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 02

Source summary (model-reported)

Britannica identifies Albert Einstein as a physicist and describes his four 1905 papers as contributions that altered the course of modern physics, including work on relativity.

Open britannica.com
Source 03

Source summary (model-reported)

The biography states that Einstein developed general relativity, received the Nobel Prize in Physics for services to theoretical physics, and is perhaps best known for the mass-energy equivalence formula E=mc2.

Open alberteinstein.com
2 · Answer check returns Yes
Q8
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.

2 · Answer check returns Yes
Q9
1 · Guesser asks

Did this person win a Nobel Prize?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person win a Nobel Prize?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01
The Nobel Prize in Physics 1921 was awarded to Albert Einstein "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
2 · Answer check returns Yes
Q10
1 · Guesser asks

Did this person work on relativity or quantum mechanics?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person work on relativity or quantum mechanics?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

Source 01

Source summary (model-reported)

The Nobel Prize biography states that Einstein published his paper on the general theory of relativity in 1916. It also says he contributed to the theory of radiation, worked on the quantum theory of a monatomic gas, investigated the quantum theory, and laid the foundation for the photon theory of light.

Open nobelprize.org
Source 02

Source summary (model-reported)

The biography reports that Einstein published the Special Theory of Relativity in 1905 and completed his General Theory of Relativity in 1915. It also identifies his photoelectric-effect work as a pivotal step in the evolution of quantum theory.

Open alberteinstein.com
Source 03

Source summary (model-reported)

The page describes Albert Einstein as a German-born theoretical physicist best known for developing the theory of relativity and states that he also made important contributions to quantum theory.

Open en.wikipedia.org
2 · Answer check returns Yes
Q11
1 · Guesser asks

Did this person die before 1960?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die before 1960?"}}
Oracle evidence3 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
Q12
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.

2 · Answer check returns Yes
Q13
1 · Guesser asks

Did this person die outside of Germany?

Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Did this person die outside of Germany?"}}
Oracle evidence2 model-reported sources

The Oracle reported these excerpts and URLs. They are not independently checked.

2 · Answer check returns Yes
G
1 · Guesser guessesNot counted

Albert Einstein

German-born theoretical physicist, Nobel laureate, developed relativity, died in the USA in 1955

Validator rationale The proposal names Albert Einstein and its description matches the specified historical person.

Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"German-born theoretical physicist, Nobel laureate, developed relativity, died in the USA in 1955","name":"Albert Einstein","question":null}}
2 · Validator returns Yes