CS50x Puzzle Day is an online adaptation of an event we hold at Harvard each year, an opportunity to collaborate on a team with classmates, family, friends, students, and colleagues on a packet of puzzles (i.e., logic problems). The event is open to everyone around the world, whether taking CS50 or not. No prior CS experience required. Teams of size 2, 3, or 4 are encouraged, or you can participate on your own. Teachers are welcome to host their own version during class. Starts anytime after 00:
1:31
CS50x Puzzle Day is an online adaptation of an event we hold at …
1.7K viewsMar 14, 2024
FacebookCS50
Invitation to CS50x Puzzle Day 2025
2:21
Invitation to CS50x Puzzle Day 2025
17.7K viewsMar 28, 2025
YouTubeCS50
This is Puzzle Day by Steven at the @CS50 Fair at @Harvard. | CS50
2:37
This is Puzzle Day by Steven at the @CS50 Fair at @Harvard. | CS50
33.7K views4 months ago
FacebookCS50
CS50x Puzzle Day 2022 Solutions
31:30
CS50x Puzzle Day 2022 Solutions
21.2K viewsApr 5, 2022
YouTubeCS50
The 2048 Trick You Missed! 🔢 Solving CS50 Puzzle 5 (Powers of Two) | CS50 Puzzle Day 2025
6:31
The 2048 Trick You Missed! 🔢 Solving CS50 Puzzle 5 (Powers of Two) | C…
42 views1 month ago
YouTubeThe Incense Spiral
You're invited to CS50x Puzzle Day 2016
1:26
You're invited to CS50x Puzzle Day 2016
15.7K viewsFeb 10, 2016
YouTubeCS50
CS50 Puzzle Day 2025 | Puzzle 1 Full Solution & Strategy
5:26
CS50 Puzzle Day 2025 | Puzzle 1 Full Solution & Strategy
487 views1 month ago
YouTubeThe Incense Spiral
57:45
10PM PKT | Harvard's CSx50 Puzzle Day | Day 04
118 views1 month ago
YouTubeiCodeGuru
CS50x Puzzle Day 2023 - CS50x 2023
Mar 31, 2023
harvard.edu
2:13
Look Up - CS50x Puzzle Day 2017
32.6K viewsApr 4, 2017
YouTubeCS50
2:35
Rock, Steel, and Ice - CS50x Puzzle Day 2017
5.2K viewsApr 4, 2017
YouTubeCS50
57:57
10PM PKT | Harvard CSx50 Puzzle Day | Day 03
149 views1 month ago
YouTubeiCodeGuru
44:58
Harvard CS50x Puzzle Day traning session 2026 | Day 1
624 views1 month ago
YouTubeiCodeGuru
1:07
CS50x Puzzle Day 2026
12.4K views1 month ago
YouTubeCS50
6:59
Going Bananas! 🍌 Solving CS50 Puzzle 2 (BananAnagrams) | CS50 …
156 views1 month ago
YouTubeThe Incense Spiral
2:19
CS50x final project - puzzle
9.3K viewsDec 27, 2014
YouTubeJustyna Poniatowska
This was CS50x Puzzle Day 2016
Jun 15, 2021
medium.com
23:26
CS50 Puzzle Day @ SEC - September 9, 2023
10K viewsSep 12, 2023
YouTubeCS50
0:56
Invitation to CS50x Puzzle Day 2019
41.9K viewsMar 12, 2019
YouTubeCS50
10:48
This Puzzle Uses REAL Subway Maps 🚆 Solving CS50 Puzzle 7 (Tick…
34 views1 month ago
YouTubeThe Incense Spiral
0:49
A Look around CS50 Puzzle Day 2016
6.1K viewsSep 4, 2016
YouTubeCS50
2:20
CS50 on Instagram: "Hello, world! CS50x Puzzle Day is back. Starts a…
60.2K viewsMar 31, 2025
Instagramcs50
4:30
Two Degrees - CS50x Puzzle Day 2017
11.2K viewsApr 4, 2017
YouTubeCS50
8:53
The Tangram Trick You Missed! 🌭 Solving CS50 Puzzle 6 (Tangrams…
46 views1 month ago
YouTubeThe Incense Spiral
3:07
Stacks - CS50x Puzzle Day 2017
5.6K viewsApr 4, 2017
YouTubeCS50
0:12
Day 37 | 2 hours into CS50x and I learned that everything is just 0s a…
979 views1 month ago
YouTubeStillHere
How I got 50 on Chess.com's Puzzle Rush
Dec 22, 2023
chess.com
1:54
The Next Unicorn - CS50x Puzzle Day 2017
5.1K viewsApr 4, 2017
YouTubeCS50
9:13
Lost in the Dark? 🦯 Solving CS50 Puzzle 3 (The Blind Maze) | CS50 P…
96 views1 month ago
YouTubeThe Incense Spiral
1:58
Taste the Rainbow - CS50x Puzzle Day 2017
7.5K viewsApr 4, 2017
YouTubeCS50
See more videos
Static thumbnail place holder