v1: Constraints (≥6 = LIKELY)
v2: Ambiguity (≤1 = LIKELY)
LIKELY → Find the shape:
● Lock — forced shade/keep
◐ Signal — 2 duplicates
═ Beam — row/col sweep
◈ Resonance — island detect
⟶ Vision — trial search
Mistake Budget:
Easy: 5 | Med: 4 | Hard: 3 | Expert: 2