6 × 6 Binairo puzzles — the beginner binary puzzle grid. Learn the three rules on a small board you can finish in a couple of minutes. Free, no signup.

8 × 8 Binairo puzzles — the classic Takuzu size and the format of many of our daily boards. Four 0s and four 1s per line. Free, unlimited, mobile-friendly.

10 × 10 Binairo puzzles — advanced binary puzzle grids with five 0s and five 1s per line. Longer deduction chains, unlimited free boards.

12 × 12 Binairo puzzles — expert binary puzzle boards, 144 cells with six 0s and six 1s per line. Deep deduction chains for experienced solvers.

14 × 14 Binairo puzzles — our largest binary puzzle grids. 196 cells, seven 0s and 1s per line, and every technique in the book. Free online.