HCI Puzzles

Early this year (2024), a friend and I decided to organise a “puzzle hunt” in HCI, which involved literally burying a chest in the school compounds. However, we lost interest, so the project did not come to fruition.

But I still have my puzzles! So here they are.

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Rules:

• Each puzzle consist of a single picture, and each picture contains six blanks. The answer to each puzzle is a six character alphanumeric string that logically fits into the blanks.¹
• All puzzles are in some way related to HCI (high school or college). They are sorted by (what we think is) difficulty order.
• You may use any source of information you find, including the Internet and other people.
• To submit your solution, you can DM @gghx on discord (or if you know me from any other social media platform, that works too). First solvers may get some prize.
• There is no deadline. Solutions will eventually be released.

Have fun!

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Puzzle 1:

First solver: nil

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Puzzle 2:

First solver: Choo Ray :O

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Puzzle 3:

First solver: nil

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Puzzle 4:

Note: please don’t email these ppl, they don’t know anything…

First solver: Yaoqi and Beichen

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Puzzle 5:

First solver: nil

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1. Furthermore, all puzzles are equivalent to their printed copy. Meaning, there is no use in viewing source code or analysing pixels. ↩︎