The rules in one breath

You are given a small set of block shapes. Place each one anywhere on the grid it fits. Completing a full row or a full column clears it and scores. When none of your remaining pieces fit anywhere, the game ends. That is everything — no gravity, no rotation in most versions, no swaps.

No rotation is the detail that changes the whole game. You must plan around the shape as dealt, which means the orientation decisions happen before you place, not during.

The core principles

  1. Keep the grid flat. Holes and stair-steps of leftover cells are what kill runs. A flat board can accept almost any piece; a ragged one cannot.
  2. Clear lines as soon as you can, but not at any cost. Clearing a line is good; clearing it in a way that leaves an isolated single cell two rows deep is a debt you pay later.
  3. Place pieces flush into corners and along edges first. The border pieces (L-shapes, long bars) are the hardest to place later — spend them early against walls, save flexible small shapes for the middle.
  4. Protect a 3×3 empty zone somewhere. A compact open region is your insurance against a big awkward piece arriving with no home.
  5. Think in pairs. Before placing a piece, check what it does to your ability to place the other two pieces you are holding — not just whether it clears a line now.

Line clearing: rows or columns?

A subtle skill is choosing which line to clear when both are available. Clear the one whose absence opens the most usable space. A row with a gap in a crowded region is worth clearing before a row in a region that is already open — clearing is not just points, it is board repair. Use it to flatten the areas that are closest to being unusable.

Reading your three pieces as a set

Most versions deal three pieces at a time and let you place them in any order. That ordering is real power: place the most restrictive piece first, while the board still has room to receive it, and keep flexible single cells and dominoes for last. Reordering a bad set is often the difference between clearing two lines and game over.

Try it on Wood Block Puzzle. For a calmer spatial puzzle with pouring instead of placing, see Water Sort strategy, or browse the whole catalogue in the puzzle games guide.