About Block Jigsaw

Block Jigsaw is an original browser puzzle project built around one clear rule: every supplied shape must fit into a board until no cell is left empty.

How puzzles are generated

The generator begins with a fully occupied grid and grows connected regions across it. Each region becomes one draggable puzzle piece. This method guarantees that the generated set begins with at least one complete tiling of the board.

Why there are several modes

Spatial puzzle difficulty does not map cleanly to age. The modes are therefore presented as challenge bands rather than fixed ability levels. Board size, piece count, shape irregularity, rotation, flipping and placement assistance change together as difficulty increases.

Design principles

• Simple rules that can be learned by playing.
• No forced account or unnecessary personal-data collection.
• Legal placements are accepted even when they are not part of the generator's original solution.
• Hints assist progressively rather than instantly solving every move.
• Celebration, sound and animation support engagement without changing the underlying puzzle.