Game Overview
Unblock is a sliding block logic puzzle. Rearrange rectangular pieces within a constrained grid so the special target block can exit through the opening. Efficient solutions use minimal moves while preserving future mobility.
This version emphasizes clarity and quick drag logic (implementation dependent) so you can focus on spatial planning sequences.
Controls
- Click / Drag: Move a block along its permitted axis.
- Goal: Slide the target piece to the board edge exit.
- Restart: Refresh to reset (add a button later if needed).
Tip: Always scan for blocking chains—identify which piece ultimately constrains the target and work backward.
Solving Heuristics
Strategy Guide
1. Exit Corridor Mapping
Outline the exact lane the target must traverse. Any piece intersecting that lane becomes high priority displacement.
2. Dependency Chains
List blockers in the order they must vacate. This transforms a fuzzy puzzle into a linear micro‑goal sequence.
3. Conservation of Slack
Avoid consuming free space with low-impact shifts; preserve pockets for later multi-piece rotations.
4. Dead Move Detection
Reversible moves that restore the exact prior state add no information. Minimize them to keep solution depth shallow.
Common Mistakes
- Random Sliding: Burns space with no structural progress.
- Ignoring Corridor: Losing sight of the exit channel dilutes effort.
- No Chain Plan: Tackling pieces out of dependency order causes circular loops.
- Overpacking: Filling emergent cavities eliminates needed pivot space.