Fill every empty cell with either a filled circle (●) or an open circle (○) so that the grid satisfies the standard Takuzu constraints and the relation clues placed between neighboring cells.

No triples: No three consecutive identical symbols in any row or column.
Equal count: Each row and column must contain exactly half ● and half ○.
Unique lines: No two rows may be identical; no two columns may be identical.
Relation clues: = means the two cells must match. x means they must differ.

Pre-filled cells and relation clues are fixed. The puzzle is solved when every cell is filled and all four rules are satisfied.

Controls

Key	Action
Arrow keys / WASD / hjkl	Move cursor
Mouse left-click	Move to a cell, or cycle the current editable cell
`z` / `0`	Place ●
`x` / `1`	Place ○
`Backspace`	Clear cell
`Ctrl+R`	Reset puzzle
`Ctrl+H`	Toggle full help
`Escape`	Return to main menu

Modes

Mode	Grid	Clues	Notes
Beginner	6x6	~50%	Relation clues heavily support early deduction
Easy	6x6	~40%	Balanced Takuzu and relation clue logic
Medium	8x8	~40%	Mixed deductions across rows, columns, and clues
Tricky	10x10	~38%	Uniqueness and clue interactions matter
Hard	10x10	~32%	Longer deduction chains
Very Hard	12x12	~30%	Sparse givens with tighter clue reading
Extreme	14x14	~28%	Largest board and deepest logic

Elo Difficulty

Named modes are compatibility presets. Use --difficulty <0..3000> to target a specific Elo difficulty for generated puzzles.

Quick Start

puzzletea new takuzu-plus beginner
puzzletea new takuzu-plus medium
puzzletea new takuzu-plus extreme
puzzletea new binario+ hard       # alias