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 views3 months ago
FacebookCS50
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…
15 views2 weeks ago
YouTubeThe Incense Spiral
CS50x Puzzle Day 2022 Solutions
31:30
CS50x Puzzle Day 2022 Solutions
21K viewsApr 5, 2022
YouTubeCS50
Sudochem - CS50x Puzzle Day 2017
2:05
Sudochem - CS50x Puzzle Day 2017
7.3K viewsApr 4, 2017
YouTubeCS50
You're invited to CS50x Puzzle Day 2016
1:26
You're invited to CS50x Puzzle Day 2016
15.7K viewsFeb 10, 2016
YouTubeCS50
5:26
Don't Get Lost! 🌍 Solving CS50 Puzzle 1 (Around the World)
18 views3 weeks ago
YouTubeThe Incense Spiral
1:07
CS50x Puzzle Day 2026
8K views1 month ago
YouTubeCS50
CS50x Puzzle Day 2023 - CS50x 2023
May 11, 2023
harvard.edu
2:13
Look Up - CS50x Puzzle Day 2017
32.6K viewsApr 4, 2017
YouTubeCS50
6:59
Going Bananas! 🍌 Solving CS50 Puzzle 2 (BananAnagrams) | CS50 …
13 views3 weeks ago
YouTubeThe Incense Spiral
10:48
This Puzzle Uses REAL Subway Maps 🚆 Solving CS50 Puzzle 7 (Tick…
27 views2 weeks ago
YouTubeThe Incense Spiral
8:53
The Tangram Trick You Missed! 🌭 Solving CS50 Puzzle 6 (Tangrams…
5 views2 weeks ago
YouTubeThe Incense Spiral
2:20
CS50 on Instagram: "Hello, world! CS50x Puzzle Day is back. Starts a…
15.1K viewsMar 31, 2025
Instagram
23:26
CS50 Puzzle Day @ SEC - September 9, 2023
10K viewsSep 12, 2023
YouTubeCS50
4:30
Two Degrees - CS50x Puzzle Day 2017
11.1K viewsApr 4, 2017
YouTubeCS50
3:07
Stacks - CS50x Puzzle Day 2017
5.5K viewsApr 4, 2017
YouTubeCS50
9:13
Lost in the Dark? 🦯 Solving CS50 Puzzle 3 (The Blind Maze) | CS50 P…
69 views3 weeks ago
YouTubeThe Incense Spiral
1:16
CS50 Puzzle Day 2014
2.9K viewsDec 11, 2014
YouTubeCS50
3:18
This was CS50 2019 at Yale
7.3K viewsFeb 1, 2020
YouTubeCS50
1:58
Taste the Rainbow - CS50x Puzzle Day 2017
7.4K viewsApr 4, 2017
YouTubeCS50
24:07
FINAL PROJECT | SOLUTION (CS50x)
26.5K viewsSep 16, 2022
YouTubeDors Coding School
1:55
Harvard CS50x | How to submit the first problem set(Scratch) Guide
21.4K viewsJul 4, 2022
YouTubeDev -R
15:22
[2023] CS50 - (Week 1) Mario (More Comfortable) | Walkthrough & Gui…
13.5K viewsAug 2, 2021
YouTubeCS50 Guide by Anvea
9:54
CS50 Week 1 Practice Problem - Prime Solution (Step by Step Guid…
8.8K viewsAug 10, 2023
YouTubeCS50 Made Easy with Rahul
9:19
Watch This BEFORE doing Problem Set 1 - Mario (Harvard CS50 Week …
9.7K viewsJun 20, 2023
YouTubeCS50 Made Easy with Rahul
15:48
[2023] CS50 - (Week 1) Mario (Less Comfortable) | Walkthrough & Gui…
30.8K viewsJun 27, 2021
YouTubeCS50 Guide by Anvea
16:39
CS50 - PRACTICE PROBLEMS WEEK 1: DEBUG, HALF and PRIM…
27.8K viewsJan 10, 2023
YouTubeDors Coding School
25:50
CS50 Problem Set 2 - Caesar (Step by Step Walkthrough for Beginners)
92.8K viewsMar 8, 2022
YouTubeCS50 Made Easy with Rahul
See more videos
Static thumbnail place holder