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DAVID MALAN: Hello, world.

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My name is David Malan,
and I teach CS50,

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which is Harvard University's
Introduction to the Intellectual

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Enterprises of Computer Science
and the Art of Programming

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freely available online at CS50edX.org.

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Each year, we host an
event on campus called

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CS50 Puzzle Day, during which Harvard
students tackle a packet of puzzles.

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Logic problems of sorts for
fun and fabulous prizes.

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And each year, we also host
an event called CS50 X Puzzle

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Day, which is an online
adaptation of the same open

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to everyone around the world,
whether they're taking CS50 or not.

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No prior computer science or
programming experience is required.

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You're encouraged to form teams
of size two, three, or four,

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or you can participate on your own.

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And teachers are welcome to host
their own version during class.

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Last year's puzzles, for instance,
included this here practice puzzle.

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This year, pixelated puzzle.

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Plus, some Calvinball.

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This year, game room and more.

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All of which are still
available online so that you can

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practice in advance if you would like.

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This year, CS50 Puzzle Day
starts Friday, April 5th 2024

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and ends Monday April 8th
2024 in your own time zone.

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To participate, register
at CS50.ly/register.

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This is CS50 X Puzzle
Day and this is CS50.

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