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Science Fair

Four students showcased different projects with different mentors at different booths. Use the clues to match each student with their project, mentor, and booth.

Edition #23 medium Publish date: 2026-02-07
Scenario

Four students showcased different projects with different mentors at different booths. Use the clues to match each student with their project, mentor, and booth.

Clues
  1. Hazel presented the volcano.
  2. The solar car was at booth B2.
  3. Evan worked with Mr. Chen.
  4. Freya was at booth A1.
  5. The greenhouse project was mentored by Ms. Ortiz.
  6. Gideon did not work with Prof. Kaya.
  7. The robot project was at booth C3.
  8. Prof. Kaya mentored the volcano project.
  9. Gideon built the solar car.
Solved

Explanation

Reveal the reasoning
  1. Clues 1-5 place each project with a mentor or booth.
  2. Clues 6-9 narrow the remaining pairings to complete the grid.

Solution

Show solution mapping

Solve the puzzle to reveal the full mapping.

Order: Project / Mentor / Booth

  • Evan -> Robot / Mr. Chen / C3
  • Freya -> Greenhouse / Ms. Ortiz / A1
  • Gideon -> Solar Car / Dr. Lee / B2
  • Hazel -> Volcano / Prof. Kaya / D4

About this puzzle

  • Published: 2026-02-07
  • Validation: Build-time checks for a one-to-one solution mapping and consistent IDs.
  • Corrections: If you spot an issue, contact us with the puzzle date. See the editorial policy and the contact page.

FAQ

Do I need to guess?

No. Every GridCipher puzzle is designed to be solvable by deduction alone.

Can I mark a cell twice?

Yes. Each tap cycles blank -> X -> check -> blank so you can adjust your notes.

What happens when I solve the puzzle?

A solved banner and summary appear, and you can share a spoiler-free result.

Yes marks 0
No marks 0
Time 00:00
Status In progress
= yes = no Blank = unknown

Tip: Shift-click or right-click to clear a cell quickly.

Student x Project

Student Volcano Solar Car Robot Greenhouse
Evan
Freya
Gideon
Hazel

Student x Mentor

Student Dr. Lee Ms. Ortiz Mr. Chen Prof. Kaya
Evan
Freya
Gideon
Hazel

Student x Booth

Student A1 B2 C3 D4
Evan
Freya
Gideon
Hazel

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Next edition

Up next: Podcast Guests (2026-02-08)