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Case file 2026 · The murder-mystery edition
TigerHacks 2026
A high-school coding competition, by high-schoolers.
2026 theme: Murder mystery
The brief
Built by students who love to compete.
Having been fortunate to participate in coding competitions locally and internationally, we experienced the power of community in code. But we noticed something missing: a local platform for schools to engage in computer science together. So we built one.
TigerHacks brings students from multiple schools together to celebrate innovation, problem‑solving, and creativity—through a friendly coding competition designed by high‑schoolers, for high‑schoolers.
The TigerHacks team · Greenwich Country Day School3
Competitions held
55
Teams have competed
3
Languages: C++, Java, Python
190min
Of head-to-head coding
How it works
Read the evidence. Crack the case.
Teams race the clock to solve a set of algorithmic problems. Every submission is judged automatically against hidden tests — only complete, exact solutions count.
Hidden tests, no partial credit
Example I/O is provided, but you must pass every hidden test — and match the output exactly, whitespace and newlines included.
Speed breaks ties
When scores are level, the time taken to solve problems decides the ranking. Manage your time carefully.
Timeline of events
The day, minute by minute.
One afternoon. Five acts. Here is how competition day unfolds.
- 15 min
Arrival
- 15 min
Welcome Presentation + Competition Overview
- 20 min
Students Set up + Lunchtime
- 3 hr 10 min
Competition
Awards and Dismissal
All times are PM, Eastern Time.
Schools that have competed
Rye Country Day SchoolBrunswick SchoolHalf Hollow Hills High School EastWesthill High SchoolGreens Farms AcademyGreenwich High SchoolSt. Luke's SchoolNewtown High School
The investigators
Led together.
TigerHacks 2026 is led by Mary Chickering, Oliver Servedio, and Oliver Davis, students at Greenwich Country Day School, with support from GCDS faculty.
Interrogation room
Questions, answered.
Everything you need to know before competition day.
When is TigerHacks 2026?
The date for TigerHacks 2026 has not been announced yet. It will be posted on this page as soon as it is confirmed.
Where is the competition held?
TigerHacks takes place at 257 Stanwich Road, Greenwich, CT 06830, hosted by Greenwich Country Day School.
Which programming languages can we use?
Submissions and grading run on HackerRank. Accepted languages are C++, Java, and Python.
What is the theme for TigerHacks 2026?
TigerHacks 2026 is murder-mystery themed. Expect a case to crack, clues to follow, and a culprit to unmask.
What resources are allowed during the competition?
Official language documentation and general tutorial sites are permitted. Q&A forums such as StackOverflow are not, and no outside assistance is allowed from anyone not authorized to help — including other teams and chaperones.
How is the competition scored?
Example input/output cases are provided, but grading uses hidden tests. A solution must pass all tests to count — there is no partial credit — and output must match exactly, including formatting, whitespace, and newlines. Ties are broken by the time taken to solve problems.
How many laptops can a team bring?
One laptop per team.
How do we contact the organizers?
Email the TigerHacks team at tigerhacks@gcds.net.
How can we prepare?
Work through the problem sets from 2023, 2024, and 2025 — solutions for each year are linked alongside them.
TigerHacks 2026
The case is open.
This year, TigerHacks is a murder mystery. Assemble your team, sharpen your algorithms, and register for TigerHacks 2026 at Greenwich Country Day School.