Brain Test 5 Level 32

Overview

A snail sits on a tiled grid, and you must guide it along one continuous route that fills every tile without crossing its own path. Dark blocked squares cannot be entered, so the walk has to route around them while still covering every open tile exactly once. The exact order follows the planned path on the board.

• Difficulty: Hard
• Estimated moves: 4

Step-by-Step Solution

1. Study the grid before moving the snail. Mark the dark blocked squares as walls that the route can never enter, and identify the open tiles the snail has to cover.
2. Plan the path from the snail's starting tile, tracing a single line that snakes through the open area and avoids looping back over a tile already stepped on.
3. Keep the route continuous: each new tile connects to the previous one by an edge, and the path must not cross itself or revisit an earlier square.
4. Route around the blocked squares by bending the walk around their edges, adjusting the snake pattern so the remaining open tiles still fit into the one continuous line.
5. When the snail has stepped on every open tile in a single non-crossing route, the checkmark appears and the grid is fully filled.
6. Mark each blocked dark square on the grid before you trace the route, and treat its four edge sides as walls the line cannot step through.
7. After every few bends, count the open tiles still ahead; if a bend would strand tiles behind a blocked square, re-route around the obstacle before the snail commits to that segment.

Strategy & Reasoning

This is a Hamiltonian-style path puzzle on a limited board. The two rules work together: every open tile must be visited, and the line must never cross or repeat. That means the route has to be planned ahead rather than chosen tile by tile in the moment, because an early detour can trap the snail in a section it cannot leave without revisiting a tile.
The blocked squares act as fixed obstacles that reshape the available corridors. Where a wall sits in the middle of the grid, the walk has to go around its side, which often forces a snake order across rows instead of a simple straight sweep. Ending a segment against a blocked square early in the path is the most common failure, since it strands open tiles behind you. Checking the remaining open tiles after each bend helps catch that trap before the snail commits. The completed route covers the whole open board in one stroke, which is what the checkmark confirms.

Tips & Common Mistakes

• Plan the full route before moving; do not let the snail wander tile by tile and get trapped behind a blocked square.
• Never cross or revisit a tile; the path has to stay one continuous non-self-crossing line.
• Bend around the dark blocked squares rather than trying to step through them, and leave enough open tiles behind each bend to finish the walk.