More clears
Balanced first move
The vertical 5-cell piece starts at row 4, column 6 and clears column 6. The complete sequence clears 2 lines.
Current-tray planning
Block Blast High Score Strategy
A useful high-score plan weighs immediate line clears against the room left for difficult shapes. This page shows a real input where the two available strategies disagree.
Plan the current three pieces first
Check all three fixed pieces together instead of committing to the first legal move. A clear can help immediately, but a move that creates small isolated gaps may make the remaining tray harder to place.
Original engine fixture
The exact input checked
This project-owned board and these three fixed pieces are passed to the production solver unchanged.
Piece 1square-2
Piece 2vertical-5
Piece 3rectangle-2x3
Compare the first move before choosing
More difficult-shape room
Survival first move
The 2×2 square starts at row 2, column 2 and does not clear a line. The complete sequence preserves 6 critical-shape fits.
Production solver result
Balanced
Moves placed3
Lines cleared2
Empty cells38
Largest region31
Small regions2
Critical fits5
Balanced move sequence
Piece 2
Move 1: vertical-5
- Top-left
- Row 4, column 6
- Cleared rows
- None
- Cleared columns
- C6
Piece 1
Move 2: square-2
- Top-left
- Row 4, column 6
- Cleared rows
- None
- Cleared columns
- None
Piece 3
Move 3: rectangle-2x3
- Top-left
- Row 4, column 1
- Cleared rows
- R4
- Cleared columns
- None
Production solver result
Survival
Moves placed3
Lines cleared1
Empty cells30
Largest region22
Small regions3
Critical fits6
Survival move sequence
Piece 1
Move 1: square-2
- Top-left
- Row 2, column 2
- Cleared rows
- None
- Cleared columns
- None
Piece 2
Move 2: vertical-5
- Top-left
- Row 4, column 6
- Cleared rows
- None
- Cleared columns
- C6
Piece 3
Move 3: rectangle-2x3
- Top-left
- Row 4, column 1
- Cleared rows
- None
- Cleared columns
- None
What the disagreement shows
Balanced clears two lines and finishes with 38 empty cells, while Survival accepts one clear to preserve six critical-shape fits. Neither answer is a universal scoring trick: each ranks this exact reviewed tray under a named provisional priority.
Try the trade-off in the solver
Load the exact fixture below, keep Survival or switch to Balanced, and solve the same current tray with the production engine.
Step 1
Mark the filled board cells
Click, tap, or drag to paint. Row 1 is the top row.
Step 2
Enter the three fixed pieces
Choose a preset or draw the exact orientation you see.
Current tray
Piece 1
Choose a preset
Single
Lines
Squares and rectangles
Corners
Draw a custom shape
Current tray
Piece 2
Choose a preset
Single
Lines
Squares and rectangles
Corners
Draw a custom shape
Current tray
Piece 3
Choose a preset
Single
Lines
Squares and rectangles
Corners
Draw a custom shape
Step 3
Choose a strategy and solve
Verified inputs
Try a verified example
Complete
Preserve critical-shape space
Use Survival to keep an extra difficult-shape fit instead of maximizing clears.
When each strategy is the safer comparison
| Signal | Balanced | Survival |
|---|---|---|
| Immediate clear | Prefer when the extra clear still leaves the full current tray legal. | Prefer when taking fewer clears preserves a difficult opening. |
| Critical-shape space | Use when difficult pieces retain enough placements after the clear. | Use when one extra fit protects the tray from a narrow board. |
| Exact fixture | 2 lines and 5 critical fits | 1 line and 6 critical fits |
Evidence boundary
This page does not calculate an official score formula, Combo multiplier, guaranteed high score, future tray, win probability, or live-game outcome. The figures above are deterministic board metrics from provisional-classic-v1.