18 logic grid puzzles with solutions

Ivo, Lea, and Mina present at 9, 10, and 11, one person per time. Ivo presents at 9. Lea is not at 9. Mina is not at 10. Who presents at 10?

Hint: Ivo takes 9. Of the two people left, who cannot be at 10?

Ari, Bo, Cia, and Dev each choose one project: kite, maze, robot, or volcano. Ari chooses neither maze, robot, nor volcano. Bo chooses neither robot nor volcano. Cia does not choose volcano. Which project does Dev choose?

Hint: Ari has only one project left. Then look at Bo.

Four workshops use Cedar, Elm, Maple, and Oak rooms. Design is not in Elm, Maple, or Oak. Coding is not in Cedar, Maple, or Oak. Writing is not in Cedar, Elm, or Oak. Where is the Music workshop?

Hint: Design can only be in Cedar. Place Coding and Writing next.

Four labeled lunch boxes contain apple, crackers, grapes, and yogurt, one snack each. Box Red has crackers. Box Blue has neither apple nor yogurt. Box Green has neither crackers nor yogurt. What is in Box Yellow?

Hint: Red has the crackers. Which snack is left for Blue?

Jae, Kira, Luis, and Noor each visit on Monday, Tuesday, Wednesday, or Thursday. Noor visits Thursday. Jae does not visit Tuesday or Wednesday. Kira does not visit Monday or Wednesday. Which day does Luis visit?

Hint: Noor takes Thursday, so Jae has only Monday left.

Eli, Fara, Gus, Hana, and Ivan wear circle, diamond, moon, square, and star badges. Eli does not wear diamond, moon, square, or star. Fara does not wear moon, square, or star. Gus does not wear square or star. Hana does not wear star. Which badge does Ivan wear?

Hint: Eli has only one badge left. Work down the list from there.

Paz, Quin, Ravi, and Sol use lockers 12, 18, 24, and 30. Ravi uses 24. Paz does not use 18 or 30. Quin does not use 12 or 30. Which locker does Sol use?

Hint: Ravi takes 24, so Paz can only use 12.

Uma, Vero, Wes, and Xia play drum, flute, piano, and violin. Xia plays violin. Uma plays neither flute nor piano. Vero plays neither drum nor piano. Which instrument does Wes play?

Hint: Xia has the violin, so Uma must play the drum.

Packets A, B, C, and D contain basil, dill, mint, and thyme. Packet B contains dill. Packet A contains neither dill nor mint nor thyme. Packet C contains neither basil, dill, nor thyme. What is in Packet D?

Hint: B has the dill and A can only have basil. What is left for C?

Four parcels arrive by bike, car, train, and van. Parcel North arrives by train. Parcel East arrives by neither car nor van. Parcel South arrives by neither bike nor van. How does Parcel West arrive?

Hint: North has the train, so East must come by bike.

Clay, glass, paper, and wood models sit on shelves 1, 2, 3, and 4. Glass is on shelf 2. Clay is not on shelves 2, 3, or 4. Paper is not on shelves 1, 2, or 4. Which shelf holds wood?

Hint: Clay can only be on shelf 1, and paper only on shelf 3.

Nia, Oren, and Pia each use a telescope at dawn, noon, or dusk. Oren uses it at noon. Nia uses it at neither noon nor dusk. When does Pia use it?

Hint: Oren has noon, and Nia cannot have dusk.

Red, Blue, Green, and White recipe cards show soup, rice, salad, and stew. White shows stew. Red shows neither rice, salad, nor stew. Blue shows neither soup, salad, nor stew. What does Green show?

Hint: Red can only show soup, and Blue only rice.

Kite, Lime, Moss, and Navy envelopes contain a badge, map, pass, and token. Moss contains the pass. Kite contains neither the map, pass, nor token. Lime contains neither the badge, pass, nor token. What is in Navy?

Hint: Kite can only hold the badge, and Lime only the map.

Aster, Birch, Cedar, Dune, and Elm segments occupy radio slots 1 through 5. Aster has slot 3. Birch has none of slots 2 through 5. Cedar has neither slot 1 nor slots 3 through 5. Dune has neither slots 1 through 3 nor slot 5. Which slot has Elm?

Hint: Birch can only have slot 1, Cedar only slot 2 and Dune only slot 4.

Five lanterns named Arc, Beam, Cove, Drift, and Echo glow amber, blue, green, silver, and violet. Cove glows green. Arc glows neither blue, green, silver, nor violet. Beam glows neither amber, green, silver, nor violet. Drift glows neither amber, blue, green, nor violet. What color is Echo?

Hint: Arc can only be amber, Beam only blue and Drift only silver.

Poster tubes J, K, L, M, and N hold art, code, dance, music, and science posters. Tube L holds dance. Tube J holds neither code, dance, music, nor science. Tube K holds neither art, dance, music, nor science. Tube M holds neither art, code, dance, nor science. Which poster is in Tube N?

Hint: J can only hold art, K only code and M only music.

Folders A through F have coral, gold, gray, lilac, teal, and white tabs. Folder C has gray. A has none of gold, gray, lilac, teal, or white. B has none of coral, gray, lilac, teal, or white. D has none of coral, gold, gray, teal, or white. E has none of coral, gold, gray, lilac, or white. Which tab does F have?

Hint: A, B, D and E each have only one tab left.