Block Puzzle: how to play and score higher

The rules in one minute

Under the board sit three pieces: straight lines of different lengths, small and large squares, corner shapes, L and J shapes, T, S and Z shapes and the occasional single block. Pick one up and drop it anywhere it fits on empty squares. Pieces cannot be rotated, so the shape you are given is the shape you have to place.

Whenever a horizontal row or a vertical column is completely full, it disappears. Rows and columns are checked together, so a single piece can finish a row and a column at the same moment and both clear at once. When all three pieces are on the board you get a fresh set of three. The game ends when none of the pieces you still hold fits anywhere on the board.

• Touch: drag a piece; it floats a little above your finger so you can see where it will land.
• Tap: tap a piece to pick it, then tap the spot on the board where it should go.
• Keyboard: press 1, 2 or 3 to pick a piece, move it with the arrow keys and press Enter to place it.

How scoring and combos work

Every square you place is worth one point, so a big 3×3 square earns nine points just for landing. The real points come from clearing lines. One line gives a bonus of 10, two lines at once give 30, three give 60 and four give 100. Clearing several lines with a single piece is therefore worth much more than clearing them one at a time.

On top of that sits the combo. Each placement that clears at least one line raises your combo by one, and the combo multiplies that clear’s bonus. Your second clear in a row is doubled, the third is tripled, and so on. The combo survives a couple of quiet moves: only when three placements in a row clear nothing does it drop back to zero. Keeping a combo alive for a long stretch is the fastest way to a high score.

Strategy tips that actually help

Most games are lost because the board becomes too fragmented, not because it is too full. A board with twenty empty squares in one open area is safe; a board with twenty single holes scattered around is almost over. Think about the shape of the empty space you leave behind, not just where the current piece fits.

• Keep the centre open. Build along the edges and corners first, so the middle stays free for awkward pieces.
• Always save room for a 3×3 square and a five-block line. These are the pieces that end games, so make sure there is a place they could go before you fill it.
• Look at all three pieces before placing the first one. Placing them in a different order often makes all three fit.
• Avoid lonely single holes. A gap that only a single block can fill may stay empty for a long time.
• Set up a cross: when a row and a column both need the same square, one piece clears both.

Playing for combos

Once you are comfortable surviving, try to plan two or three clears ahead. Fill several rows to seven out of eight squares, then finish them one after another so each placement clears something. Because the combo forgives two quiet moves, you can spend one piece tidying up and still keep the chain going. Big multi-line clears inside a long combo are where scores of several thousand come from.

Where the 8×8 block puzzle comes from

Block puzzles grew out of the falling-block games of the 1980s, but they removed the falling and the clock. Instead of reacting quickly, you get a small set of pieces and a fixed grid and simply decide where each one goes. The idea borrows from much older tiling puzzles such as polyominoes, the shapes made by joining squares edge to edge, which puzzle writers have studied since the mid-twentieth century.

In the 2010s the format became a mobile favourite, with games built around a square grid, a handful of pieces per turn and lines that clear both across and down. The 8×8 board has become a common size because it is large enough for planning but small enough that every mistake matters. Our version keeps those classic rules and adds a gentle combo system so careful play is rewarded.