Nonogram Logic

Nonogram Logic Paint by Numbers

Combine arithmetic and art with the addictive challenges of Nonogram Logic! Also known as Picross, Griddlers, or Paint by Numbers, this puzzle game requires you to fill grid cells to reveal a hidden pixel picture, guided by numerical clues on the headers. It is a fantastic unblocked version of the famous Nonogram puzzle, running smoothly in any web browser without installation.

History of the Picross Grid Puzzle

Nonograms were invented independently in 1987 by Non Ishida, a Japanese graphics editor, and Tetsuya Nishio, a puzzle writer. Ishida won a competition in Tokyo with grid art using window lights. In 1995, Nintendo released "Mario's Picross" for the Game Boy, which popularized the puzzle globally. Nonograms are widely loved for combining logic solving with artistic satisfaction. This Scratch version features an intuitive pencil and cross tool interface, allowing you to fill boards easily.

Rules & Clue Interpretation

The board consists of a grid (typically 5x5, 10x10, or 15x15) with numbers listed at the top of each column and to the left of each row. These numbers represent the lengths of consecutive blocks of filled cells in that line. For example, a row clue of "3 1" means there is a block of 3 consecutive filled cells, followed by at least one empty space, followed by a single filled cell. Your objective is to fill the correct squares and place crosses in the empty ones to reveal a hidden pixel drawing.

Pro Solving Strategies

1. Start with Large Numbers: Look for clues that match the width or height of the grid. If the grid is 10 cells wide and the clue is "10", the entire line must be filled.
2. Overlapping Method: If a row is 10 cells wide and the clue is "7", count 7 cells from the left and 7 from the right. The squares where they overlap (the middle 4 cells) must be filled.
3. Mark Empty Cells with Crosses: As soon as you complete a number block in a line, place crosses (X) in all other cells in that line that cannot possibly be filled. This narrows down the grid.
4. Combine Rows and Columns: Every block you fill in a row affects the clues in the corresponding columns. Scan vertically and horizontally constantly.

Clue Interpretation Example Table

• [5]: ■■■■■ (A single block of 5 consecutive filled cells.)
• [2 2]: ■■ ☒ ■■ (Two separate blocks of 2 filled cells, separated by an empty space.)
• [1 1 1]: ■ ☒ ■ ☒ ■ (Three separate single filled cells, each separated by crosses.)

Key Game Highlights

• Classic griddlers puzzle grids with simple pencil and cross tools.
• Fascinating pixel drawings that are revealed upon completion.
• Mistake counter to help you track your logic accuracy.
• Clean visual layouts suitable for desktop mouse navigation.