So you like Advent of Code? You must like puzzles. Introducing the Smarty Advent Puzzle competition!

How do you play?

Step 1: Register for our Private Leaderboard

Not sure how a private leaderboard works? You just sign up below, and then solve the Advent of Code puzzles as they come out. If you’re the highest of those on our private leaderboard, you win! View our leaderboard to see current rankings.

Step 2: Solve this week’s Smarty Advent Puzzle

You may find you’d benefit from some address validation tools to solve these puzzles. You can get a free account here.

• Week 1 Puzzle: A Holiday Design for Santa — View Puzzle
• Week 2 Puzzle: In Sequence — View Puzzle
• Week 3 Puzzle: Hidden Number — View Puzzle

The 2021 Advent of Code Event Has Ended

But don't let that stop you from solving these puzzles! View the private leaderboard to see how folks measured up.

Congrats to the winners of the Smarty Puzzle!

• Allan Taylor
• Jonathan Ho
• schmidtDTN
• FatherChristmas
• davidrtse
• Zeyu Chen

For your reference, here are the answers to this year's puzzles:

• Puzzle 1: A Star
• Puzzle 2: E, C, A, B, G, I, F, H, D, J
• Puzzle 3: ZIPCode and +4_code