Work through the ladder in order. The early puzzles teach the notation the later ones assume. Sketch the grid, tick a cell when a clue confirms a pairing, and cross the rest of that cell's row and column straight away; most of the work in a logic grid is done by the crosses, not the ticks. Nothing here is timed, and checking an answer shows you the method, so read the explanation even when you were right.
Choose one answer for each item. Keep the authored hints, answer key, and worked explanations separate until you are ready to check your work.
Difficulty 1
Start here and establish the method before moving up the ladder.
1. puz-logic-grids-01: Two at the counter · Difficulty 1
Iris and Owen each collect one drink from the counter. Which pairing satisfies both clues?
Two colleagues, two drinks, one drink each.| Row | Tea | Coffee |
|---|
| Iris | | |
|---|
| Owen | | |
|---|
Clues
- Iris and Owen order different drinks.
- Iris does not order the coffee.
- Iris: coffee; Owen: tea
- Iris: tea; Owen: coffee
- Iris: tea; Owen: tea
- Iris: coffee; Owen: coffee
Answer:
2. puz-logic-grids-02: Repainting the lane · Difficulty 1
Two houses on the same lane are repainted, one in green and one in cream. Which pairing fits the clues?
Two houses, two colours, one colour each.| Row | Green | Cream |
|---|
| House 4 | | |
|---|
| House 6 | | |
|---|
Clues
- One house is painted green and the other is painted cream.
- House 6 is painted green.
- House 4: cream; House 6: green
- House 4: green; House 6: cream
- House 4: green; House 6: green
- House 4: cream; House 6: cream
Answer:
3. puz-logic-grids-03: A two-runner finish · Difficulty 1
Two runners finish a short race. Using the clues, which pairing of runners to places is correct?
Two runners, two finishing places.| Row | First | Second |
|---|
| Priya | | |
|---|
| Ravi | | |
|---|
Clues
- Only two runners finished, and they took first and second place.
- Ravi crossed the line before Priya.
- Ravi: second; Priya: first
- Ravi: first; Priya: second
- Ravi: first; Priya: first
- Ravi: second; Priya: second
Answer:
4. puz-logic-grids-04: Two boxes on the shelf · Difficulty 1
A striped box and a plain box sit on a shelf. One holds a ribbon and the other holds buttons. Which pairing is correct?
Two boxes, two items, one item each.| Row | Ribbon | Buttons |
|---|
| Striped box | | |
|---|
| Plain box | | |
|---|
Clues
- Each box holds exactly one of the two items.
- The plain box does not hold the ribbon.
- Striped: buttons; Plain: ribbon
- Striped: buttons; Plain: buttons
- Striped: ribbon; Plain: ribbon
- Striped: ribbon; Plain: buttons
Answer:
5. puz-logic-grids-05: Covering the two shifts · Difficulty 1
A shop runs an early shift starting at 7am and a late shift starting at 2pm. Hana and Marek cover one shift each. Which rota fits the clues?
Two shifts, two staff, one shift each.| Row | Early shift (7am) | Late shift (2pm) |
|---|
| Hana | | |
|---|
| Marek | | |
|---|
Clues
- Each shift is covered by exactly one person, and nobody covers both.
- Hana is unable to start work before midday.
- Marek is happy to take whichever shift is left.
- Hana: late shift; Marek: early shift
- Hana: early shift; Marek: late shift
- Hana: early shift; Marek: early shift
- Hana: late shift; Marek: late shift
Answer:
Difficulty 2
Continue in order; use the worked explanations from earlier rungs when needed.
6. puz-logic-grids-06: Three friends, three fruits · Difficulty 2
Bea, Callum and Dilan each take one piece of fruit from a bowl holding an apple, a pear and a plum. Which set of pairings is correct?
Three friends, three fruits, one fruit each.| Row | Apple | Pear | Plum |
|---|
| Bea | | | |
|---|
| Callum | | | |
|---|
| Dilan | | | |
|---|
Clues
- Each friend takes exactly one fruit, and no two friends take the same fruit.
- Bea takes the pear.
- Dilan takes the apple.
- Bea: pear; Callum: apple; Dilan: plum
- Bea: apple; Callum: plum; Dilan: pear
- Bea: pear; Callum: plum; Dilan: apple
- Bea: plum; Callum: pear; Dilan: apple
Answer:
7. puz-logic-grids-07: Three vehicles, three colours · Difficulty 2
A hire firm keeps a hatchback, an estate and a van, each a different colour: silver, navy or red. Which set of pairings is correct?
Three vehicles, three colours, one colour each.| Row | Silver | Navy | Red |
|---|
| Hatchback | | | |
|---|
| Estate | | | |
|---|
| Van | | | |
|---|
Clues
- Each vehicle is a different colour.
- The van is red.
- The hatchback is not silver.
- Hatchback silver, estate navy, van red
- Hatchback navy, estate silver, van red
- Hatchback navy, estate red, van silver
- Hatchback red, estate navy, van silver
Answer:
8. puz-logic-grids-08: Three deliveries, three days · Difficulty 2
Books, plants and tiles are delivered to a workshop on Monday, Tuesday and Wednesday, one delivery a day. Which set of pairings is correct?
Three deliveries, three days, one delivery a day.| Row | Monday | Tuesday | Wednesday |
|---|
| Books | | | |
|---|
| Plants | | | |
|---|
| Tiles | | | |
|---|
Clues
- The three deliveries arrive on three different days.
- The plants arrive on Tuesday.
- The tiles arrive earlier in the week than the books.
- Books Monday, plants Tuesday, tiles Wednesday
- Tiles Tuesday, plants Monday, books Wednesday
- Tiles Monday, books Tuesday, plants Wednesday
- Tiles Monday, plants Tuesday, books Wednesday
Answer:
9. puz-logic-grids-09: Three pets, three owners · Difficulty 2
Eve, Femi and Grace each own one of a cat, a rabbit and a parrot. Every clue below is a denial. Which set of pairings is correct?
Three owners, three pets, one pet each.| Row | Cat | Rabbit | Parrot |
|---|
| Eve | | | |
|---|
| Femi | | | |
|---|
| Grace | | | |
|---|
Clues
- Each person owns exactly one pet, and each pet has exactly one owner.
- Eve does not own the parrot.
- Grace does not own the parrot.
- Eve does not own the rabbit.
- Eve cat, Femi parrot, Grace rabbit
- Eve cat, Femi rabbit, Grace parrot
- Eve rabbit, Femi parrot, Grace cat
- Eve parrot, Femi cat, Grace rabbit
Answer:
10. puz-logic-grids-10: Desks on three floors · Difficulty 2
Ines, Jonah and Kemi have desks on the first, second and third floors of the same building, one desk to a floor. Which set of pairings is correct?
Three people, three floors, one desk on each floor.| Row | First floor | Second floor | Third floor |
|---|
| Ines | | | |
|---|
| Jonah | | | |
|---|
| Kemi | | | |
|---|
Clues
- Each person's desk is on a different floor.
- Jonah's desk is on the second floor.
- Kemi's desk is higher up than Ines's desk.
- Ines third, Jonah second, Kemi first
- Ines first, Jonah third, Kemi second
- Ines first, Jonah second, Kemi third
- Ines second, Jonah first, Kemi third
Answer:
11. puz-logic-grids-11: Three teams, three scores · Difficulty 2
The Larks, the Otters and the Swifts scored 12, 18 and 24 points in a quiz, in some order. Which set of pairings is correct?
Three teams, three scores, one score each.| Row | 12 points | 18 points | 24 points |
|---|
| Larks | | | |
|---|
| Otters | | | |
|---|
| Swifts | | | |
|---|
Clues
- The three teams scored 12, 18 and 24 points, with no two teams on the same score.
- The Otters scored the most points of the three.
- The Larks did not score 18.
- Larks 18, Otters 24, Swifts 12
- Larks 12, Otters 24, Swifts 18
- Larks 12, Otters 18, Swifts 24
- Larks 24, Otters 18, Swifts 12
Answer:
Difficulty 3
Continue in order; use the worked explanations from earlier rungs when needed.
12. puz-logic-grids-12: Subjects and study days · Difficulty 3
Amara, Bo and Cleo each study one subject and each attend on one day. Which subject does Bo study, and on which day does Bo attend?
Three students, each with one subject and one study day.| Row | Subject | Day |
|---|
| Amara | | |
|---|
| Bo | | |
|---|
| Cleo | | |
|---|
Clues
- The subjects are geology, statistics and poetry; the days are Monday, Wednesday and Friday. No subject and no day is shared.
- Amara studies statistics.
- Bo does not study poetry.
- Cleo attends on Monday.
- Amara does not attend on Friday.
- Geology, Wednesday
- Poetry, Friday
- Statistics, Friday
- Geology, Friday
Answer:
13. puz-logic-grids-13: Three shops, three streets · Difficulty 3
Dara, Esme and Frank each run one shop selling one product on one street. What does Dara sell, and on which street does that shop stand?
Three shopkeepers, each with one product and one street.| Row | Product | Street |
|---|
| Dara | | |
|---|
| Esme | | |
|---|
| Frank | | |
|---|
Clues
- The products are candles, cheese and cameras; the streets are Bridge Street, Mill Street and Quay Street. No product and no street is shared.
- Esme's shop sells cheese.
- The camera shop is not on Mill Street.
- Dara's shop is on Mill Street.
- Frank's shop is not on Bridge Street.
- Cameras, Mill Street
- Candles, Quay Street
- Candles, Mill Street
- Cheese, Mill Street
Answer:
14. puz-logic-grids-14: Players and their towns · Difficulty 3
Rosa, Sami and Tomas each play one instrument and each live in one town. Which instrument does Sami play, and in which town does Sami live?
Three musicians, each with one instrument and one town.| Row | Instrument | Town |
|---|
| Rosa | | |
|---|
| Sami | | |
|---|
| Tomas | | |
|---|
Clues
- The instruments are the cello, the flute and the oboe; the towns are Ashford, Brindle and Calder. No instrument and no town is shared.
- Tomas plays the flute.
- The cellist lives in Brindle.
- Tomas lives in Ashford.
- Sami does not play the cello.
- Oboe, Calder
- Cello, Brindle
- Flute, Calder
- Oboe, Brindle
Answer:
15. puz-logic-grids-15: Three morning departures · Difficulty 3
Three trains leave a station at 09:10, 09:25 and 09:40, each from a different platform and each to a different town. From which platform does the 09:40 leave, and where is it going?
Three departures, each with one platform and one destination.| Row | Platform | Destination |
|---|
| 09:10 | | |
|---|
| 09:25 | | |
|---|
| 09:40 | | |
|---|
Clues
- The platforms are 1, 2 and 3; the destinations are Fenwick, Garrow and Hollin. No platform and no destination is shared.
- The 09:25 leaves from platform 2.
- The Fenwick train leaves from platform 3.
- The 09:10 does not go to Garrow.
- The Garrow train leaves from a lower-numbered platform than the Hollin train.
- Platform 3, Fenwick
- Platform 1, Garrow
- Platform 2, Garrow
- Platform 1, Hollin
Answer:
16. puz-logic-grids-16: Three lockers at the pool · Difficulty 3
Iva, Jae and Kit each use one of lockers 1, 2 and 3, and each locker holds one item. Which locker does Jae use, and what is inside it?
Three people, each with one locker and one item inside it.| Row | Locker | Contents |
|---|
| Iva | | |
|---|
| Jae | | |
|---|
| Kit | | |
|---|
Clues
- The lockers are 1, 2 and 3; the items are boots, a helmet and a towel. No locker and no item is shared.
- The towel is in locker 2.
- Kit uses neither locker 1 nor locker 2.
- Iva has the boots.
- Locker 1, boots
- Locker 3, helmet
- Locker 2, boots
- Locker 2, towel
Answer:
17. puz-logic-grids-17: Three morning appointments · Difficulty 3
Lena, Mo and Nils have appointments at 10:00, 10:30 and 11:00, one each. Who is seen at 10:30, and who is seen at 11:00?
Three people, three appointment times, one appointment each.| Row | 10:00 | 10:30 | 11:00 |
|---|
| Lena | | | |
|---|
| Mo | | | |
|---|
| Nils | | | |
|---|
Clues
- The three appointments are at 10:00, 10:30 and 11:00, one person each.
- Nils is seen immediately before Mo.
- Lena is not seen at 11:00.
- Nils at 10:30, Lena at 11:00
- Mo at 10:30, Nils at 11:00
- Nils at 10:30, Mo at 11:00
- Lena at 10:30, Mo at 11:00
Answer:
Difficulty 4
Continue in order; use the worked explanations from earlier rungs when needed.
18. puz-logic-grids-18: Four flats, four floors · Difficulty 4
A block has one flat on each of floors 1 to 4, and Priya, Quinn, Rafe and Suki live one to a flat. Who lives on the top floor?
Four floors, four residents, one resident to a floor.| Row | Priya | Quinn | Rafe | Suki |
|---|
| Floor 4 (top) | | | | |
|---|
| Floor 3 | | | | |
|---|
| Floor 2 | | | | |
|---|
| Floor 1 | | | | |
|---|
Clues
- Each resident lives on a different floor.
- Priya lives on floor 3.
- Suki lives on neither floor 1 nor floor 4.
- Rafe does not live on floor 4.
- Quinn
- Rafe
- Suki
- Priya
Answer:
19. puz-logic-grids-19: Four scores, four roles · Difficulty 4
Tara, Ubaid, Vera and Wren each took one role and each scored 61, 68, 74 or 80 on a shared exercise. Which role did Vera take, and what did she score?
Four candidates, each with one score and one role.| Row | Score | Role |
|---|
| Tara | | |
|---|
| Ubaid | | |
|---|
| Vera | | |
|---|
| Wren | | |
|---|
Clues
- The scores are 61, 68, 74 and 80 and the roles are analyst, designer, editor and planner. No score and no role is shared.
- Vera scored higher than Tara but did not score the highest.
- The editor scored 80.
- Ubaid scored the lowest of the four.
- Tara is the designer.
- The planner scored the lowest of the four.
- Editor, 80
- Analyst, 74
- Designer, 68
- Analyst, 68
Answer:
20. puz-logic-grids-20: Four books on a shelf · Difficulty 4
Four books (Salt Road, Winter Ledger, Paper Kites and Quiet Fen) each have a different author and a different genre. Who wrote the romance, and which book is it?
Four books, each with one author and one genre.| Row | Author | Genre |
|---|
| Salt Road | | |
|---|
| Winter Ledger | | |
|---|
| Paper Kites | | |
|---|
| Quiet Fen | | |
|---|
Clues
- The authors are Ade, Bex, Cass and Dov; the genres are crime, history, romance and travel. No author and no genre is shared.
- Salt Road is neither the crime novel nor the history book.
- Bex wrote Quiet Fen.
- The travel book was written by Cass.
- Winter Ledger is the crime novel.
- Quiet Fen is not the history book.
- Dov wrote the history book.
- Cass, Salt Road
- Dov, Quiet Fen
- Bex, Quiet Fen
- Bex, Paper Kites
Answer:
21. puz-logic-grids-21: Four stalls in a row · Difficulty 4
Four market stalls stand in a row at positions 1 to 4, counting from the entrance. Which stall is at position 2?
Four stalls, four positions in a row, one stall to a position.| Row | Bread | Cheese | Flowers | Honey |
|---|
| Position 1 | | | | |
|---|
| Position 2 | | | | |
|---|
| Position 3 | | | | |
|---|
| Position 4 | | | | |
|---|
Clues
- The four stalls occupy positions 1 to 4, one stall to a position.
- The bread stall is directly to the left of the cheese stall.
- The honey stall is at position 4.
- The flower stall is not next to the cheese stall.
- The cheese stall
- The flower stall
- The honey stall
- The bread stall
Answer:
22. puz-logic-grids-22: Four projects, four deadlines · Difficulty 4
A team runs a survey, a rebuild, an audit and a launch. Each has a different lead and is due in a different month. Which project does Nia lead, and when is it due?
Four projects, each with one lead and one deadline month.| Row | Lead | Due month |
|---|
| Survey | | |
|---|
| Rebuild | | |
|---|
| Audit | | |
|---|
| Launch | | |
|---|
Clues
- The leads are Kai, Lin, Moss and Nia; the deadlines are March, April, May and June. No lead and no month is shared.
- Kai leads the audit.
- The rebuild is due neither in March nor in June.
- The survey is due in March.
- Lin's project is due in June.
- Moss's project is due in May.
- The rebuild, due in May
- The survey, due in March
- The audit, due in April
- The launch, due in June
Answer:
Difficulty 5
Continue in order; use the worked explanations from earlier rungs when needed.
23. puz-logic-grids-23: Four labs, four topics · Difficulty 5
Anya, Boris, Cato and Dena each work in one of labs 1 to 4 and each study one topic. Which topic does Boris study, and in which lab?
Four researchers, each with one lab and one topic.| Row | Lab | Topic |
|---|
| Anya | | |
|---|
| Boris | | |
|---|
| Cato | | |
|---|
| Dena | | |
|---|
Clues
- The labs are 1, 2, 3 and 4; the topics are algae, basalt, coral and resin. No lab and no topic is shared.
- Anya works in lab 1.
- If Boris works in lab 2, then Dena studies basalt.
- Dena studies coral.
- Cato does not work in lab 2.
- Boris works in a higher-numbered lab than Cato.
- The algae study is carried out in lab 1.
- Cato does not study resin.
- Resin, lab 4
- Basalt, lab 4
- Resin, lab 2
- Basalt, lab 3
Answer:
24. puz-logic-grids-24: The clue you can spare · Difficulty 5
Four flights each leave from a different gate at a different time. The timetable below has exactly one solution, and exactly one of the last four clues can be deleted without making it ambiguous. Which clue is that?
Four flights, each with one gate and one departure time.| Row | Gate | Departure |
|---|
| Ardal flight | | |
|---|
| Brenn flight | | |
|---|
| Corve flight | | |
|---|
| Duns flight | | |
|---|
Clues
- The gates are 1, 2, 3 and 4; the departures are 06:00, 07:00, 08:00 and 09:00. No gate and no time is shared.
- The Ardal flight leaves at 06:00.
- The Corve flight leaves from gate 4.
- The flight at gate 1 leaves at 07:00.
- The Duns flight leaves later than the Corve flight.
- The Ardal flight leaves from gate 3.
- The Brenn flight does not leave from gate 2.
- The clue that the flight at gate 1 leaves at 07:00
- The clue that the Duns flight leaves later than the Corve flight
- The clue that the Ardal flight leaves from gate 3
- The clue that the Brenn flight does not leave from gate 2
Answer:
25. puz-logic-grids-25: Four households, one assumption · Difficulty 5
Four households each live on a different street and keep a different vehicle. Which household keeps the bicycle, and on which street do they live?
Four households, each with one street and one vehicle.| Row | Street | Vehicle |
|---|
| Ahern | | |
|---|
| Brill | | |
|---|
| Cowan | | |
|---|
| Dray | | |
|---|
Clues
- The streets are Larch Row, Marsh Lane, Nettle Way and Oak Rise; the vehicles are a bicycle, an estate car, a motorbike and a van. No street and no vehicle is shared.
- At least one of these two statements is true: the van is kept on Larch Row, or Dray lives on Marsh Lane.
- Ahern lives on neither Larch Row nor Nettle Way.
- Cowan lives on neither Nettle Way nor Oak Rise.
- Neither Brill nor Cowan keeps the van.
- Dray keeps neither the motorbike nor the van.
- The estate car is kept on Nettle Way.
- Cowan, on Larch Row
- Dray, on Nettle Way
- Dray, on Marsh Lane
- Brill, on Nettle Way
Answer: