0h h1
0h h1 Binary Puzzle Guide
A calm Takuzu-style logic puzzle you can play in the browser: fill the grid, avoid triples, balance colors, and keep every row and column unique.
0h h1
The third-party game loads only after you click, keeping the first view faster.
0h h1 is a small logic game by Q42 and Martin Kool. The puzzle is also known as Takuzu or Binary Sudoku, but the experience is lighter than a classic number sudoku: every cell has only two possible colors.
The challenge is not speed. A good solve comes from reading constraints in the right order, marking forced cells, and resisting guesses until the board gives you a clean deduction.
Use the embedded browser version above for a quick round, then keep this guide open for the rule checklist and beginner solving path.
The Three Rules That Solve the Board
Every 0h h1 board follows three constraints. Once you learn to scan for them, most moves become forced rather than guessed.
- No row or column may contain three adjacent tiles of the same color.
- Each row and column must end with the same number of both colors.
- No two completed rows or completed columns may be identical.
Beginner Solving Order
Start with the safest deductions before thinking about uniqueness. This keeps the board clean and prevents accidental guesses.
- First scan for two identical colors together; the cell before or after them is often forced.
- Next count each row and column. If one color has reached its limit, the remaining blanks must be the other color.
- Only after those checks, compare nearly finished rows or columns to avoid duplicates.
- If a move is not forced by one of these rules, leave it blank and scan another line.
Common Mistakes
Most failed boards come from treating 0h h1 like a guessing game. The puzzle is built to reward patience and repeatable checks.
- Do not fill symmetrical-looking blanks just because the pattern feels right.
- Do not solve one row in isolation; every move also changes a column.
- When stuck, switch from pattern scanning to counting, then to uniqueness checks.
Source and Browser Notes
This page links to the official 0h h1 web game. It loads in the browser and does not require a download from Luma. If a network blocks third-party game embeds, use a permitted network instead of looking for unofficial mirrors.
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Frequently Asked Questions
- What is 0h h1?
- 0h h1 is a browser logic puzzle by Q42 and Martin Kool. It is also known as Takuzu or Binary Sudoku because each cell has two possible states.
- How do I play 0h h1?
- Fill the board with two colors while following three rules: no three adjacent matching tiles, equal counts in each row and column, and no duplicate rows or columns.
- Do I need to guess?
- Usually no. Check triples, counts, and duplicate-line risks before guessing. If none of those rules force a move, leave the cell blank and scan another line.
- Is 0h h1 free in the browser?
- Yes. The official web game can be played in a browser without installing an app. Luma embeds the public web version and adds its own guide notes.
Try 0h h1 first, then compare it with other short logic and puzzle games on Luma.