RESERVOIR HAZARD CLEARANCE SYSTEM

Detailed Introduction / Strategy Guide

Setting & Goal

You are a senior reservoir clearance operator. A 9×9 work zone is occupied by 23 directional arrow obstacles that block effective storage capacity. Push them with electric current, trigger chain reactions, and free as many cells as possible. When the job ends, empty cells fill with water. Your score is the storage recovery rate (percentage of empty cells).

Basic Controls

• Click a non-charging, non-petrified arrow obstacle: it slides in its arrow direction until it hits another obstacle or the board edge.
• Successful move → the obstacle becomes high-energy (charging) and the current direction is recorded.
• Failed move → impact effect only; no charging.
• When you switch to a different direction, all previous same-direction high-energy states are cleared.

High-Energy Protocol (click a charging obstacle)

Charging count	Effect
Fewer than 3	No special effect, impact only
3–5	Electric Chaos: all charging obstacles randomize direction and lose charge
6 or more	Electric Swallow: all charging obstacles are removed from the board

Stack same-direction charges deliberately, then click once to clear large groups.

Ending & Petrification

• When no ordinary obstacle can still move, the game does not end immediately.
• You must click any remaining block once more. Only then:
  1. All leftover obstacles are petrified (grayed out, permanently locked)
  2. Empty cells fill with water
  3. The final storage recovery rate is shown
• If a swallow empties the board completely, the extra click is skipped and water starts at once.

Practical Tips

1. Push first, charge later — Drive obstacles to edges or dead ends to free the center, then deliberately stack same-direction charges for chaos or swallow.
2. Same-direction stacking — Keep clicking movable obstacles that share one direction to reach 3–5 (chaos) or 6+ (swallow) quickly.
3. Chaos as a reset — When high-energy pieces are stuck, gather three and trigger chaos to reorient them and reopen paths.
4. Swallow for score — In the late game, aim for six or more same-direction charges; one swallow can free a large area and boost the recovery rate.
5. Don’t rush the final click — Confirm nothing can move, then click any block to start petrification. Clicking early does nothing harmful; waiting does not change the score.
6. Score is pure emptiness — Only empty cells count. Clear what you can; petrified leftovers still occupy cells and lower the rate.

HUD Legend

• Available Storage — Current empty cells
• Remaining Obstacles — Blocks still on the board
• Storage Recovery Rate — Empty-cell percentage (your score)
• High-Energy Obstacles — Number currently charging

The bottom test buttons are visual-effect previews only and do not alter official job data.

Tap Start Clearance to begin. Aim for a recovery rate above 70% for a strong result. Good luck with the operation.