atkuzu

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How to play

Fill the grid with 0s and 1s so that every row and column follows these rules:

• No three in a row. The same digit can't appear three times in a row, in either direction.
  011100
• Balanced rows and columns. Each row and column has the same number of 0s and 1s.
  110101
• No duplicate lines. No two rows are identical, and no two columns are identical.
  1010

  1010

A cell that breaks a rule turns red as soon as you place it, so you always know where to look.

Controls

• Click or Space cycles a cell through blank, 0, and 1.
• ← ↑ ↓ → move focus between cells.
• Enter submits the puzzle once it's full.
• Ctrl+Z (Cmd+Z on Mac) undoes a move,
  Ctrl+Shift+Z or Ctrl+Y redoes it.
  Or use the Undo/Redo buttons above the board.