Screenshot beta with editable review: the core 8×8 rule is confirmed, while recognition coverage, piece refresh, and line-clear timing still need more device evidence.
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.
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 1 square-2
Piece 2 vertical-5
Piece 3 rectangle-2x3
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.
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.