Block Puzzle: fill the lines, clear the board

Block Puzzle: the relaxing game of fitting blocks

Block Puzzle is a simple, satisfying game: drag colorful blocks onto a wooden 9×9 board and fill complete lines to clear them. There is no timer and no rush, just you, the board and three pieces at a time. It is the kind of game you open for one round and play for twenty minutes.

This version is also known as block sudoku, because the board is divided into nine 3×3 squares, just like a sudoku grid. You can clear a row, a column or one of those squares, and the best moves clear several of them at once.

How to play

1. Drag a piece from the tray below the board and drop it on empty cells. While you drag, a shadow shows exactly where it will land, and cells that would clear light up.
2. Fill a line. When a row, a column or a 3×3 square is full, it clears and you score points.
3. Use all three pieces. When the tray is empty, three new pieces arrive.
4. Game over comes when none of your pieces fits anywhere. Your best score is saved on your device.

On a phone the piece floats just above your finger while you drag, so you can always see where it goes. You can also tap a piece and then tap the cell for its top-left corner.

Scoring

• 1 point for every block you place.
• Line clears are worth much more: one line gives 10 points, and clearing two or three lines with a single piece multiplies the reward.
• Combos: clear lines on several moves in a row and every clear earns a bonus on top.

Strategy for high scores

Keep space for the awkward pieces. The long 5-block lines and the big 3×3 square are the pieces that end games. Try to always keep at least one place where each of them would still fit. Pieces that no longer fit anywhere are shown faded in the tray, which is your warning to make room.

Work the edges first. Pieces placed along the edges block fewer lines than pieces in the middle. Build up from the sides and keep the center flexible.

Aim for double clears. A piece that completes a row and a 3×3 square at the same time scores many more points than clearing them one by one. Look at where your lines cross.

Don’t leave single holes. A lone empty cell surrounded by blocks can only be filled by the single block. Too many of those and the board locks up.

Why people love block puzzles

Block puzzles are among the most played games on phones worldwide. They are easy to learn, they reward calm planning, and every clear feels good. Unlike many mobile versions, ours has no energy system, no forced waiting and no download: it runs in your browser on any computer, tablet or phone, and full screen gives you the biggest board your screen allows.

More puzzles to try

For a gentle logic challenge, play Cat Sudoku or classic Sudoku. If you like sliding and merging, try 2048. And for another relaxing sorting game, there is Water Sort.

How to play Block Puzzle

1. You get three pieces at a time. Drag each one onto the board. Pieces cannot be rotated.
2. A full row, a full column or a full 3×3 square clears and scores points.
3. Clearing several lines at once, or clearing on moves in a row, gives combo points.
4. When all three pieces are placed you get three new ones.
5. The game ends when none of your remaining pieces fits anywhere on the board.

Block Puzzle tips

Keep the middle open

The center of the board belongs to three rows, three columns and a 3×3 square at once. Filling it too early leaves little room for big pieces.

Plan for the long pieces

Always keep one empty row or column where a 5-block line or a 3×3 square would still fit. Those pieces end more games than any other.

Clear two things at once

A piece that finishes a row and a square at the same time scores far more than two separate clears. Look for the crossing points.

Frequently asked questions