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Your first ARC puzzle
Examples show how an input changes into an output. Your job is to infer that hidden rule and apply it to the test.
Solve one guided puzzle, then try three short practice challenges. It takes about a minute to get your first win, and no account is required.
Examples teach the change
Test input
Apply the same change. The tutorial will introduce only the controls you need.
The idea behind the puzzles
ARC puzzles show a few input-and-output examples. Your job is to infer the rule that connects them, then apply that rule to a new grid. There are no instructions because discovering the instruction is the puzzle.
Example
Input
Create an account to save your streaks, results, and place on the leaderboard.
Output
Test
Input
Your answer