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Letter Sudoku

Logic Level 1

This game is very similar to Sudoku but uses the letters A, B, C, and D.

Which letter would go into the red box with the question mark?

A B C D Impossible

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 7 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

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by Justin Arun

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