Fill every square with a 0 or a 1. Tap a square to cycle it: empty → 0 → 1 → empty (right-click goes the other way), or select it and type 0 or 1.
Three rules: never three of the same next to each other in a row or column; every row and column has as many 0s as 1s; and no two rows (or two columns) are exactly the same.
The little counts beside each row and under each column show how many 0s and 1s it has so far. Squares that break a rule glow red straight away.
Fill the grid with 0s and 1s: never three the same in a row, half of each in every line, and no two rows or columns alike.
The full guide, with a worked example and common mistakes: How to play Binary Puzzle.
Yes — they are names for the same kind of puzzle. Some versions use two colours instead of 0 and 1; the game lets you switch to colours or sun and moon symbols.
No. The 0s and 1s are just two symbols; no arithmetic is needed. It is a great first logic puzzle for younger children.
It shows how many 0s and 1s the row has so far, so you can spot when a row has all of one number.
Yes. Copy it into the Binary Puzzle Solver and step through every pair, gap, count and line check.