Probe → propagate → reveal
Each probe triggers a signal that travels across the board and reveals cells based on strict propagation rules.
Case File 02
A minimalist deduction puzzle built on probing, propagation, and clean logic.
Tap to probe. Watch the signal propagate. Use what you reveal to deduce what you can’t see — and clear the grid within your probe budget.
Signal-based discovery
Every probe follows strict rules (direction, walls, and polarity constraints). Learn to aim for high-yield reveals and close the grid with fewer probes.
Gameplay overview
Each probe triggers a signal that travels across the board and reveals cells based on strict propagation rules.
Reveals aren’t random — polarity rules create guaranteed structure you can use to deduce safe moves.
Propagation respects direction. Choosing when and where to probe is the core decision, not pure trial-and-error.
Barriers cut signal lines and create pockets. Use them to isolate sections and reduce wasted probes.
Every level has a tight probe budget. Cleaner lines and higher-yield probes feel instantly rewarding.
Impactful wave, micro-shakes, and satisfying reveal pulses make every successful probe feel earned.
How it works
Start with what you know: visible cells, constraints, and where high-yield propagation lines could form.
Spend one probe to trigger the signal. The goal is maximum information — not just revealing a single cell.
The signal travels, interacts with walls, and reveals a chain of tiles. This is your new information.
Use polarity rules and revealed segments to infer safe areas and eliminate low-value guesses.
Finish the remaining pockets with minimal probes and keep your run clean under the budget.
Gameplay screenshots

Choose a probe target and plan for a high-yield propagation line.

Propagation reveal: watch the signal travel and expose new polarity information.

Tight budgets: track probes, progress, and the remaining unknown pockets.

Walls create pockets and force smarter probe placement.

Clean clears feel better: fewer probes, stronger deductions.

Review your efficiency and push for tighter clears.

Track momentum and keep climbing into harder layouts.

Choose a probe target and plan for a high-yield propagation line.

Propagation reveal: watch the signal travel and expose new polarity information.

Tight budgets: track probes, progress, and the remaining unknown pockets.

Walls create pockets and force smarter probe placement.

Clean clears feel better: fewer probes, stronger deductions.

Review your efficiency and push for tighter clears.

Track momentum and keep climbing into harder layouts.
Frequently asked questions
It’s a deduction puzzle built around probing and signal propagation. You reveal tiles through rules-driven chains and use constraints to finish within a probe budget.
You’ll sometimes take calculated risks, but the game is designed to reward planning: pick probes that maximize information and reduce uncertainty fast.
Learning which probes generate the biggest reveals, and how to use polarity constraints + walls to deduce the remaining pockets efficiently.
Propagation is rule-based. If a probe can’t travel far (direction, blockers, dead paths), it yields less. Part of mastery is avoiding low-value probes.
Yes. Levels are compact and satisfying — each clear is a quick logic hit with a strong reveal payoff.
Deduction + propagation
Probe with intent, ride the propagation wave, and finish levels with fewer probes than you thought possible.