Protect broad landing zones
Do not let an almost-empty board fragment into narrow slots. A 3×3 square or five-cell bar can end a run that still looks spacious.
SPATIAL PLANNING · CLASSIC 8×8
Block Puzzle place · clear · survive
Drag any of the three pieces onto the board. Fill a whole row or column to clear it. Pieces do not rotate, so keep enough open shapes for the rest of the tray.
SCORE0Clean best 0
Choose a pieceDrag a piece onto the board, or tap a piece then tap a legal square.
LINES0COMBO0MOVES0RUNClean
YOUR THREE PIECESUse all three to refill
Runs0
Clean best0
Lifetime lines0
Best combo0
Clean runs0
Daily streak0
How scoring, Daily and controls work
Classic rules
Every placement scores its occupied cells. Complete rows and columns clear immediately. Multiple lines in one drop and consecutive clearing drops earn visible combo bonuses. Pieces never rotate.
Daily
Everyone on this build receives the same date-stable piece stream. Your board and progress autosave locally; no account or server leaderboard is required.
Clean vs Assisted
Hint, Undo and Restart remain available, but using them marks that run Assisted. Clean personal bests therefore remain honest.
Keyboard
1–3 selects a tray piece. Arrow keys move the placement cursor, Enter places, H hints, Ctrl/Cmd+Z undoes, F toggles fullscreen.
Advanced coach, review & local evidence
V0.182 · EXPLAINABLE SPACE-PLANNING COACH
Plan the whole visible tray, not just the next clear
Every legal piece + anchor is ranked against open-region shape, remaining-piece landing counts, large-shape capacity and tray survival. Deep scan exhaustively checks only the pieces you can see now.
Local coach—
Best-move rate—
Tray-safety breaks0
IntegrityClean
Current position
Deep scan is optional and marks the run Assisted. It analyzes only the visible tray; future random pieces are unknown.
Review & turning point
Exact same-seed evidence
30-day Daily evidence
The tray is one three-piece problem
Before the first placement, test where the other two pieces can still go. Placement order often matters more than the first clear.
Local-first, no fake ranking
Your autosave, clean best, Daily history and review evidence stay in this browser. No account, paid API, population percentile or pretend global leaderboard.