Block Blast Solver

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Block Blast Solver Examples: Two Boards, Step by Step

Reading about strategy is one thing. Seeing it on a real board is better. Here are two boards, solved move by move, with the exact numbers our solver gave.

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Short answer

Here are two boards solved step by step, with every move and number taken from the solver. In the first, the hardest piece has to go last. In the second, the Best and Keep combo answers differ, so you can compare them.

Stuck on a board right now? Open the solver and get the best order for your three pieces.

Before we start

How These Examples Were Made

We built these two boards for teaching, and we ran them through our own solver. Every move, line count and label below is the solver's real answer. The boards are not screenshots from a game.

  • Filled cells are blocks already on the board.
  • Highlighted cells show the piece being placed in that step.
  • Pieces are numbered P1, P2, P3 from left to right in the tray.

Example 1

Only 2 of 6 Orders Work

A crowded board, and a tray with a 1x3 line, a 2x2 square and a big L.

The start. Tray: P1 is a 1x3 line, P2 is a 2x2 square, P3 is a big L. The solver labels this board Critical.

There are six ways to order three pieces. We tested every one, trying every legal spot for each piece and clearing lines as the game would. Only two orders let you place all three pieces.

  • 1x3 line, then 2x2 square, then big L: works.
  • 2x2 square, then 1x3 line, then big L: works.
  • The other four orders, where the big L comes first or second: at least one piece runs out of room.

Look at that. The big L is the hardest piece, but it has to go last. It has no room until another piece clears a line and opens the space. Here is the solver's answer.

Move 1: P2, the 2x2 square, goes in the top left corner. No line clears yet.
Move 2: P1, the 1x3 line, goes on the bottom row. It completes the second column from the left, so that column clears.
Move 3: P3, the big L, fits in the space the cleared column left behind.

The finished board is still labelled Critical, but all three pieces were placed. The solver's note says "Room for a 1×5, big L · a 3×3 would not fit." That is the kind of board where a solver helps most, because a small slip can leave a piece with nowhere to go.

What to take away: the rule "place the hardest piece first" is a good start, but not the whole story. Ask which piece needs a clear to make room. That piece can go last. More in why piece order matters.

Example 2

Best or Keep Combo? Same Board, Two Answers

A tighter start, and a tray with a small L, a 1x3 line and a T shape.

The start. Tray: P1 is a small L, P2 is a 1x3 line, P3 is a T shape. The solver labels this board Tight.

The solver found two different sequences, so there are two tabs.

Best does something clever. Its first move does not clear anything. It puts the small L on top of the tall column on the right.

Best, move 1: P1, the small L, fills the top of the right-hand column.
Best, move 2: P3, the T shape, completes row 7 and that same column. Two lines clear at once.

The third move, the 1x3 line, goes in with no clear. In total Best clears 2 lines, but the first clear only happens on move 2. The board it leaves is labelled Healthy, about 34% full, with "Room for a 3×3, 1×5, big L."

Keep combo takes a different road. It plays the T shape first.

Keep combo, move 1: P3, the T shape, clears row 7 right away.

The other two pieces then go in with no more clears. In total Keep combo clears 1 line, but it clears on move 1. Its final board is also Healthy, about 45% full, and it has the same "Room for a 3×3, 1×5, big L."

Choose Best when

you want the most lines and the emptiest board. It waits one move to make a double clear.

Choose Keep combo when

you do not want to wait for your next clear. It clears on the very first move.

Either way

both boards end Healthy, and both keep room for the big pieces. So the choice is about timing, not safety.

How a streak reacts to waiting one move can be different from one version of the game to another, so watch the combo counter in your own game. We explain the basics in keeping your combo.

Try it yourself

Test Your Own Board

  1. Open manual mode and tap the board cells that are filled in your game.
  2. Choose your three pieces, and press solve.
  3. Look at the Board label and the Room for note, and read what they mean.
  4. If you see Best and Keep combo tabs, open both and compare.
  5. Before you play, press Why this spot? on move 1.

Keep reading

Read next

Reading the Answer

What board health and the room-for note mean.

Why Piece Order Matters

Same three pieces, different order, different result. With an example.

Manual Mode

Enter your board by hand when a screenshot won't work.

Common questions

Frequently Asked Questions

Are these examples from real games?

No. We built the boards for teaching. But every move, count and label is the real output of our solver, so they show how it thinks.

Can the hardest piece really go last?

Yes. In example 1 the big L only fits after another piece clears a column. In all four orders where it came first or second, a piece ran out of room.

Why does Best clear more lines but not clear on move 1?

Because it sets up a double clear. It uses move 1 to prepare the space, and move 2 completes a row and a column together.

Which is better, Best or Keep combo?

It depends on what you want. Best gave more lines and a slightly emptier board in example 2. Keep combo cleared earlier. Both ended Healthy.

How do I see the same information for my board?

Solve your board, then read the Board label, the Room for note and, if they appear, both tabs. Press Why this spot? under a step for the reason.

Solve your own board

Upload a screenshot or enter your board by hand and compare the answers.

Try the Solver