Seed-growth comparison → · Tile-count lanes use the same seed-growth search. Shell and structural searches are separate controls.
Growth curve · tiles versus time
The six lanes start together after preprocessing. Pause and Continue preserve search state. Periodic lanes show placements, rejections, and backtracking inside an outlined cell. A rollback to zero starts another attempt; it does not prove non-tiling. Replay and the arrows inspect recorded steps.
Current · Free-range
No benchmark run yet.