Hard 6x6 Binary Puzzle
Enjoy solving 6×6 puzzles? The book contains 120 new coloring puzzles at the same level.
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Small grid, serious challenge
This hard 6×6 binary puzzle may look simple at first, but it requires careful reasoning. With limited space, even a small mistake can affect the entire grid.
Designed for experienced solvers who enjoy precision and logical analysis. Play online or print the puzzle to solve it without distractions.
Prefer something slightly easier? Go back to the medium 6×6 puzzle.
