# Trivia... sudoku

An entry in Fortnightly Topic Challenge #49: Pub Quiz Camouflage

Please do not search the answers online (hence the tag), otherwise it would be too simple to solve this puzzle. I tried to recreate the team-play spirit of the pub quiz challenges by designing this puzzle such that it is possible for different people to answer different questions. So I would rather prefer a community-wiki answers with a lot of contributors than an answer with the solution found online.

You need to fill the grid by answering the questions below and by applying the normal sudoku rules.

Each table R1-R9 corresponds to a row of the sudoku. For each table, match each element from the first column (C1-C9) to the correct number in the second column or in the images (1-9). Then write that number in the corresponding cell. For example, if you think that Gregor Mendel was born in 1933, write 5 in R1C3.

R1 - match each scientist to their birth year

R1
C1 Carlo Rubbia 1. 1809
C2 Pythagoras 2. 1822
C3 Gregor Mendel 3. 1934
C4 Edsger Wybe Dijkstra 4. 1885
C5 Stanley Milgram 5. 1933
C6 Leonardo Da Vinci 6. circa 570 BC
C7 Charles Darwin 7. 1452
C8 Otto Brunfels 8. 1930
C9 Niels Bohr 9. 1488

R2 - match each food/recipe to its main ingredient

R2
C1 Amasi 1. semolina
C2 Galaktoboureko 2. soybeans
C3 Pao cai 3. young-coconut
C4 Miso 4. pasta
C5 Gravlax 5. milk
C7 Knödel 7. cabbage
C8 Snert 8. pea
C9 Buko pie 9. salmon

R3 - match each fruit to its image

R3
C1 Loquat 1.
C2 Babaco 2.
C3 Elderberry 3.
C4 Crane Melon 4.
C5 Kabosu 5.
C6 Soncoya 6.
C7 Orange 7.
C8 Jackfruit 8.
C9 Durian 9.

R4 - match each place or monument to its position in the map of Madrid below

R4
C2 Puerta del sol
C3 Gran via
C4 Monumento a Álvaro de Bazán
C5 Monasterio de las Descalzas
C6 Plaza mayor
C7 Teatro Albéniz
C8 Thyssen-Bornemisza National Museum
C9 Palacio real

R5 - match each number to its property

R5
C1 247 1. pentagonal number
C2 608 2. happy number
C3 642 3. factorial number
C4 1089 4. polydivisible number
C5 144 5. sphenic number
C6 6 6. fibonacci number
C7 5040 7. nonagonal number
C8 1020 8. super prime number
C9 1063 9. perfect number

R6 - match each band to its singer

R6
C1 Chicago 1. Paul McCartney
C2 Linkin Park 2. Robert Plant
C3 Daft Punk 3. Chester Bennington
C4 The Doors 4. Ray Manzarek
C5 Led Zeppelin 5. Annette Zilinskas
C6 The Beatles 6. Ian Paice
C7 Cranberries 7. Dolores O'Riordan
C8 The Bangles 8. Robert Lamm
C9 Deep Purple 9. Thomas Bangalter

R7 - match each muscle to its position in the human body in the image below

R7
C1 Pectineus
C2 Iliopsoas
C3 Occipitofrontalis
C4 Pectoralis major
C5 Sorratus anterior
C6 Deltoid
C7 Fibularis Longus
C8 Sternocleidomastoid
C9 Vastus medialis

R8 - match each job to its explanation

R8
C1 Rigger 1. studies the amphibians
C2 Minstrel 2. prompts dance figures
C3 CGO 3. studies the life prior to the Holocene
C4 Herpetologist 4. heads the game development
C5 Tweener 5. sing songs and play musical instruments
C6 Caller 6. moves large, heavy objects
C7 Endocrinologist 7. Makes drawings between the key poses
C8 Paleontologist 8. Cures hormones diseases
C9 Call Boy 9. alerts actors and actresses of their entrances

R9 - match each Disney characters to its movie

R9
C1 Pinocchio 1. Chick
C2 Peter Pan 2. Candlewick
C3 Sleeping Beauty 3. Herald
C4 The Sword in the Stone 4. Ursula
C5 The Aristocats 5. Friar Tuck
C6 Robin Hood 6. Phoebus
C7 The Little Mermaid 7. Michael Darling
C8 The Hunchback of Notre Dame 8. Roquefort
C9 Cars 9. Sir Bart

Acknowledgment: I took all the images from Wikipedia and the map from Open Street Map (license CC-BY)

• Are partial answers allowed? Commented Feb 14, 2021 at 22:51
• @newQOpenGLWidget sure! Commented Feb 14, 2021 at 23:20
• I see you have referenced Indonesia in here with Durian. Nice! I'm from Indonesia, if you haven't figured it out yet. Commented Feb 15, 2021 at 7:39
• @Anonymus25-ReinstateMonica nice to hear that, I see you can solve part of the puzzle! Commented Feb 15, 2021 at 10:09
• Can my partial answer not include the grid? I'm from mobile, so I can't make a grid Commented Feb 15, 2021 at 10:31

Solved sudoku (nothing fancy, just plain logical deduction):

$$\begin{array}{c|ccc|ccc|ccc|} & C1 & C2 & C3 \ & C4 & C5 & C6 \ & C7 & C8 & C9 \\ \hline R1 & 3 & 6 & 2 \ & 8 & 5 & 7 \ & 1 & 9 & 4 \\ R2 & 5 & 1 & 7 \ & 2 & 9 & 4 \ & 6 & 8 & 3 \\ R3 & 4 & 9 & 8 \ & 3 & 1 & 6 \ & 2 & 7 & 5 \\ \hline %-------------------------------------------------------- R4 & 7 & 4 & 6 \ & 5 & 3 & 8 \ & 9 & 1 & 2 \\ R5 & 1 & 2 & 5 \ & 7 & 6 & 9 \ & 3 & 4 & 8 \\ R6 & 8 & 3 & 9 \ & 4 & 2 & 1 \ & 7 & 5 & 6 \\ \hline %-------------------------------------------------------- R7 & 9 & 8 & 1 \ & 6 & 4 & 3 \ & 5 & 2 & 7 \\ R8 & 6 & 5 & 4 \ & 1 & 7 & 2 \ & 8 & 3 & 9 \\ R9 & 2 & 7 & 3 \ & 9 & 8 & 5 \ & 4 & 6 & 1 \\ \hline \end{array}$$

Here is the partially completed sudoku grid using the trivia only. (Please check and update the ones you know!):

$$\begin{array}{c|ccc|ccc|ccc|} & C1 & C2 & C3 \ & C4 & C5 & C6 \ & C7 & C8 & C9 \\ \hline R1 & & 6 & 2 \ & & & 7 \ & 1 & & \\ R2 & & & 7 \ & 2 & 9 & 4 \ & & & \\ R3 & 4 & & 8 \ & 3 & & 6 \ & 2 & 7 & 5 \\ \hline %-------------------------------------------------------- R4 & 7 & 4 & 6 \ & & & 8 \ & & & \\ R5 & 1 & 2 & \ & & 6 & 9 \ & 3 & 4 & 8 \\ R6 & 8 & 3 & 9 \ & 4 & 2 & 1 \ & 7 & 5 & 6 \\ \hline %-------------------------------------------------------- R7 & 9 & 8 & 1 \ & 6 & 4 & 3 \ & 5 & 2 & 7 \\ R8 & 6 & 5 & 4 \ & 1 & 7 & 2 \ & 8 & 3 & 9 \\ R9 & 2 & 7 & 3 \ & 9 & 8 & 5 \ & 4 & 6 & 1 \\ \hline \end{array}$$

R1: Scientist → Birth year

• C1 → ??
• C2 → 6, Pythagoras = circa 570 BC (@newQOpenGLWidget)
• C3 → 2, Gregor Mendel = 1822 (@Stiv)
• C4 → ??
• C5 → ??
• C6 → 7, Leonardo Da Vinci = 1452 (@Stiv)
• C7 → 1, Charles Darwin = 1809 (@Stiv)
• C8 → ??
• C9 → ??

R2: Food → main ingredient

• C1 → ??
• C2 → ??
• C3 → 7, Pao cai = cabbage (@WhatsUp)
• C4 → 2, Miso = soybeans (@WhatsUp)
• C5 → 9, Gravlax = salmon (@Stiv)
• C6 → 4, Carbonara = pasta (@justhalf)
• C7 → ??
• C8 → ??
• C9 → ??

R3: Fruit names → Fruit images

• C1 → 4 = Loquat (@JProblems)
• C2 → ??
• C3 → 8 = Elderberry (@justhalf)
• C4 → 3 = Crane melon (@JeremyDover)
• C5 → ??
• C6 → 6 = soncoya (@Stiv)
• C7 → 2 = orange (@newQOpenGLWidget)
• C8 → 7 = jackfruit (@justhalf)
• C9 → 5 = durian (@Stiv)

• C1 → 7 = Mercado de San Miguel (@WhatsUp)
• C2 → 4 = Monumento a Álvaro de Bazán (@WhatsUp)
• C3 → 6 = Plaza mayor (@WhatsUp)
• C4 → ??
• C5 → ??
• C6 → 8 = Thyssen-Bornemisza National Museum (@WhatsUp)
• C7 → ??
• C8 → ??
• C9 → ??

R5: Number → Property

• C1 → 1, 247 = 12th pentagonal number (@JeremyDover)
• C2 → 2, 608 = happy number (@Danis)
• C3 → ??
• C4 → ??
• C5 → 6, 144 = fibonacci number (@newQOpenGLWidget)
• C6 → 9, 6 = perfect number (@newQOpenGLWidget)
• C7 → 3, 5040 = factorial number (@newQOpenGLWidget)
• C8 → 4, 1020 = polydivisible number (@newQOpenGLWidget)
• C9 → 8, 1063 = super prime number (@JProblems)

R6: Band → Singer

• C1 → 8, Chicago = Robert Lamm (@Stiv)
• C2 → 3, Linkin Park = Chester Bennington (@JeremyDover)
• C3 → 9, Daft Punk = Thomas Bangalter (@Stiv)
• C4 → 4, The Doors = Ray Manzarek (@JeremyDover)
• C5 → 2, Led Zeppelin = Robert Plant (@JeremyDover)
• C6 → 1, The Beatles = Paul McCartney (@JeremyDover)
• C7 → 7, Cranberries = Dolores O'Riordan (@JeremyDover)
• C8 → 5, The Bangles = Annette Zilinskas (@JeremyDover)
• C9 → 6, Deep Purple = Ian Paize (@JeremyDover)

R7: Muscle name → Picture

• C1 → 9 = Pectineus (@JeremyDover)
• C2 → 8 = Iliopsoas (@JeremyDover)
• C3 → 1 = Occipitofrontalis (@Stiv)
• C4 → 6 = Pectoralis major (@Stiv)
• C5 → 4 = Serratus (sic) anterior (@Stiv)
• C6 → 3 = Deltoid (@Stiv)
• C7 → 5 = Fibularis Longus (@Stiv)
• C8 → 2 = Sternocleidomastoid (@Stiv)
• C9 → 7 = Vastus medialis (@Stiv)

R8: Job → Explanation

• C1 → 6, Rigger = moves large, heavy objects (@Stiv)
• C2 → 5, Minstrel = sings songs and plays musical instruments (@Stiv)
• C3 → 4, CGO = heads the game development (@Stiv)
• C4 → 1, Herpetologist = studies the amphibians (@JeremyDover)
• C5 → 7, Tweener = Makes drawings between the key poses (@JeremyDover)
• C6 → 2, Caller = prompts dance figures (in a square dance) (@JeremyDover)
• C7 → 8, Endocrinologist = cures hormone diseases (@Stiv)
• C8 → 3, Paleontologist = studies the life before the Holocene (@newQOpenGLWidget)
• C9 → 9, Call boy = alerts actors and actresses of their entrances (@JeremyDover)

R9: Disney movie → character

• C1 → 2, Pinocchio = Candlewick (@Stiv)
• C2 → 7, Peter Pan = Michael Darling (@newQOpenGLWidget)
• C3 → 3, Sleeping Beauty = Herald (@Stiv, as last one left!)
• C4 → 9, The Sword in the Stone = Sir Bart (@Stiv)
• C5 → 8, The Aristocats = Roquefort (@Stiv)
• C6 → 5, Robin Hood = Friar Tuck (@Stiv)
• C7 → 4, The Little Mermaid = Ursula (@newQOpenGLWidget)
• C8 → 6, The Hunchback of Notre Dame = Phoebus (@Stiv)
• C9 → 1, Cars = Chick (@Anonymus25-ReinstateMonica) [1]: https://i.sstatic.net/EmIbU.png
• @Anonymus, durians are also popular in Phillipines and Thailand :) Commented Feb 16, 2021 at 2:35
• @bobble True, but I think the OP's intent on this is primarily to be a quiz rather than a sudoku (it's just a quiz that happens to yield a sudoku grid), so maybe we should give it a week or so for people to answer as many of the trivia questions as they know without using the grid and then only solve by logic once no more are found? How does that sound? :)
– Stiv
Commented Feb 16, 2021 at 8:30
• @Anonymus25-ReinstateMonica Indeed, it doubtless can be solved be logic now - but the question is whether that's what melfnt (as the OP) wants us to do. The tone of the question suggests that they want to see as much of it as possible answered by trivia alone first ("I tried to recreate the team-play spirit of the pub quiz challenges", etc.) - so I would leave the answer open a while longer to allow more people to try and chip in if they know something :)
– Stiv
Commented Feb 16, 2021 at 10:05
• Thanks @melfnt - noted. newQOpenGLWidget: Care to finish off what you began? :)
– Stiv
Commented Feb 16, 2021 at 16:56
• @Stiv Sudoku done! Commented Feb 19, 2021 at 21:42