0h h1

0h h1 is a compact logic puzzle about filling a grid with two colors. Each row and column must contain equal numbers of red and blue tiles, three identical colors cannot touch in a line, and completed rows or columns must be distinct. Those three rules interact in satisfying ways: a nearly finished line can reveal a move elsewhere. It is a good choice for Sudoku fans who want a similarly thoughtful puzzle without arithmetic.

Three-rule logic
Two-color grids
Deduction puzzles

YOUR FIRST ROUND

How to play 0h h1

Fill every tile red or blue while balancing each line, avoiding triples, and keeping rows and columns unique.

Look for adjacent matching colors that force the next tile.
Count colors in nearly complete rows and columns.
Check completed lines for duplicates before finishing the grid.

Controls

Click or tap a tile: Choose its color.

Tips for a better run

Two matching colors with one gap between them force the opposite color in that gap.
When a line reaches its color quota, its remaining tiles use the other color.

GAME DETAILS

Source: Famobi / HTML5Games
Format: HTML5
Platforms: Browser
Orientation: Responsive
Play location: Here on Gamezesty

View source page ↗

BEFORE YOUR NEXT ROUND

0h h1: useful things to know

0h h1 is a good match for players who like deductions that combine local color patterns with whole-grid restrictions.

Can two completed rows be identical if both have balanced colors?

No. Equal red and blue counts are only one requirement. Completed rows must also differ from one another, and the same uniqueness rule applies to columns. A balanced line can still be invalid because it duplicates another line.

Does a diagonal run of three red tiles break the triple rule?

The published restriction concerns three matching tiles in a row or column. A diagonal run alone does not break that rule; you still need to check the horizontal and vertical lines for triples, balanced counts and duplicates.

Publisher / creator research reviewed 2026-09-08. These notes describe the game; they are not a claim of testing every level or device. Our editorial approach.

Sources for these notes

html5games.com — source 1 (opens in a new tab)

0h h1

How to play 0h h1

Controls

Tips for a better run

0h h1: useful things to know

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