Free browser puzzle

Fit every shape. Fill the board.

Choose a difficulty and start playing immediately — no account, no download.

Block Jigsaw Choose a challenge and start playing

Tip: press Esc anytime to exit full screen.

How it works

Fill every cell

Place all pieces so the board has no gaps and no overlaps. Any legal placement is allowed, so an early move can still create a difficult space later.

Six challenge modes

From 4×4 to 12×12

Difficulty increases through board size, piece count, irregular shapes, rotation, precise placement and flipping.

Always solvable

Generated from a complete board

Each puzzle begins as a fully tiled board that is divided into connected shapes, giving every generated puzzle at least one valid solution.

Simple to learn

Drag a piece onto the board. In rotation-enabled modes, select a piece and use the Rotate button, right-click, or the mouse wheel. Expert mode also allows flipping.

Read the full instructions →

More than a matching game

The game accepts any non-overlapping placement, not only the original generated solution. That means planning, backtracking and reasoning about the remaining empty space are part of the challenge.

Read strategy tips →